Hi again, > I have exactly the same errors, also on 4.11 kernel, but RAID-1 with 4 disks.
After re-formating my backup-disk back in July, I today got exactly the same error running 4.12.9 (stack trace at the end of the mail) using the following mount options: "ro,nosuid,nodev,relatime,compress-force=lzo,space_cache,subvolid=5,subvol=/,user" All I did was basically using the external disk as a receive target for btrfs send/receive backups and it was always cleanly unmounted. As the issues don't seem to generate much interest, I wonder ... should I stop using btrfs send/receive for my backups? After all, it in case it works, it works like magic ;) Best regards, Clemens [11938.378457] BTRFS: device fsid 51cd0fd0-c96f-43e7-8b72-67ece426840a devid 1 transid 2840 /dev/dm-1 [11939.426768] BTRFS info (device dm-1): force lzo compression [11939.426770] BTRFS info (device dm-1): disk space caching is enabled [11939.426771] BTRFS info (device dm-1): has skinny extents [11972.529804] ------------[ cut here ]------------ [11972.529865] WARNING: CPU: 1 PID: 10985 at fs/btrfs/extent-tree.c:6942 __btrfs_free_extent.isra.62+0x1fc/0xdc0 [btrfs] [11972.529866] Modules linked in: vfat fat uas usb_storage rfcomm ccm bnep sunrpc btusb btrtl btbcm uvcvideo btintel bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev ecdh_generic media intel_powerclamp coretemp iTCO_wdt iTCO_vendor_support arc4 kvm_intel hp_wmi iwldvm sparse_keymap ppdev mac80211 kvm mei_wdt irqbypass intel_cstate intel_uncore iwlwifi joydev cfg80211 intel_ips snd_hda_codec_hdmi acpi_cpufreq snd_hda_codec_idt tpm_infineon snd_hda_codec_generic lpc_ich rfkill snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_seq wmi snd_seq_device snd_pcm snd_timer parport_pc parport snd soundcore hp_accel tpm_tis tpm_tis_core lis3lv02d tpm input_polldev mei_me mei shpchp binfmt_misc vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) btrfs xor raid6_pq dm_crypt [11972.529908] i915 mmc_block bcache crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel i2c_algo_bit serio_raw drm_kms_helper sdhci_pci sdhci e1000e drm mmc_core ptp pps_core video [11972.529923] CPU: 1 PID: 10985 Comm: btrfs-cleaner Tainted: G OE 4.12.9-300.fc26.x86_64 #1 [11972.529924] Hardware name: Hewlett-Packard HP EliteBook 2540p/7008, BIOS 68CSU Ver. F.60 11/11/2015 [11972.529925] task: ffff8c7951c2a480 task.stack: ffffb13cc41f0000 [11972.529941] RIP: 0010:__btrfs_free_extent.isra.62+0x1fc/0xdc0 [btrfs] [11972.529942] RSP: 0018:ffffb13cc41f3bb8 EFLAGS: 00010246 [11972.529944] RAX: 00000000fffffffe RBX: 0000000000000000 RCX: 0000000000000000 [11972.529944] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8c79529f1810 [11972.529945] RBP: ffffb13cc41f3c70 R08: ffff8c79a8984620 R09: 0000000000000061 [11972.529946] R10: 0000000000000000 R11: ffffb13cc41f3b24 R12: 00000011c524c000 [11972.529947] R13: ffff8c7804110000 R14: 00000000fffffffe R15: ffff8c79a8984620 [11972.529949] FS: 0000000000000000(0000) GS:ffff8c79bbc40000(0000) knlGS:0000000000000000 [11972.529950] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [11972.529951] CR2: 00007f908c811020 CR3: 000000008fe09000 CR4: 00000000000006a0 [11972.529952] Call Trace: [11972.529977] ? btrfs_merge_delayed_refs+0x63/0x540 [btrfs] [11972.529996] ? add_delayed_ref_head.isra.9+0x1d7/0x310 [btrfs] [11972.530012] __btrfs_run_delayed_refs+0x791/0x12b0 [btrfs] [11972.530029] btrfs_run_delayed_refs+0x6b/0x270 [btrfs] [11972.530045] ? walk_up_tree+0xed/0x210 [btrfs] [11972.530061] btrfs_should_end_transaction+0x55/0x60 [btrfs] [11972.530076] btrfs_drop_snapshot+0x3db/0x8c0 [btrfs] [11972.530093] btrfs_clean_one_deleted_snapshot+0xc1/0x110 [btrfs] [11972.530111] cleaner_kthread+0x14a/0x180 [btrfs] [11972.530117] kthread+0x125/0x140 [11972.530132] ? __btree_submit_bio_start+0x20/0x20 [btrfs] [11972.530134] ? kthread_park+0x60/0x60 [11972.530140] ret_from_fork+0x25/0x30 [11972.530141] Code: ff 75 10 4c 89 e1 48 c7 45 a0 00 00 00 00 e8 cc d4 ff ff 41 89 c6 58 5a 45 85 f6 0f 84 84 00 00 00 41 83 fe fe 0f 85 06 ff ff ff <0f> ff 49 8b 37 4c 89 ef e8 a7 ec 00 00 4c 8b 4d 10 4c 8b 85 78 [11972.530166] ---[ end trace ed0da2429768f973 ]--- [11972.530172] BTRFS info (device dm-1): leaf 60489728 total ptrs 119 free space 8598 [11972.530174] item 0 key (76321669120 169 0) itemoff 16250 itemsize 33 [11972.530175] extent refs 1 gen 1541 flags 258 [11972.530176] shared block backref parent 76328681472 [11972.530177] item 1 key (76321685504 169 0) itemoff 16217 itemsize 33 [11972.530178] extent refs 1 gen 1541 flags 258 [11972.530179] shared block backref parent 76328681472 [11972.530179] item 2 key (76321701888 169 0) itemoff 16184 itemsize 33 [11972.530180] extent refs 1 gen 1541 flags 258 [11972.530181] shared block backref parent 76328681472 [11972.530181] item 3 key (76321718272 169 0) itemoff 16151 itemsize 33 [11972.530182] extent refs 1 gen 1541 flags 258 [11972.530182] shared block backref parent 76328681472 [11972.530183] item 4 key (76321734656 169 0) itemoff 16118 itemsize 33 [11972.530184] extent refs 1 gen 1541 flags 258 [11972.530184] shared block backref parent 76328681472 [11972.530185] item 5 key (76321751040 169 0) itemoff 16085 itemsize 33 [11972.530186] extent refs 1 gen 1541 flags 258 [11972.530186] shared block backref parent 76328681472 [11972.530187] item 6 key (76321767424 169 0) itemoff 16052 itemsize 33 [11972.530188] extent refs 1 gen 1541 flags 258 [11972.530188] shared block backref parent 76328681472 [11972.530189] item 7 key (76321783808 169 0) itemoff 16019 itemsize 33 [11972.530190] extent refs 1 gen 1541 flags 258 [11972.530190] shared block backref parent 76328681472 [11972.530191] item 8 key (76321800192 169 0) itemoff 15986 itemsize 33 [11972.530192] extent refs 1 gen 1541 flags 258 [11972.530193] shared block backref parent 76328681472 [11972.530194] item 9 key (76321816576 169 0) itemoff 15953 itemsize 33 [11972.530195] extent refs 1 gen 1541 flags 258 [11972.530195] shared block backref parent 76328681472 [11972.530197] item 10 key (76321832960 169 0) itemoff 15920 itemsize 33 [11972.530198] extent refs 1 gen 1541 flags 258 [11972.530198] shared block backref parent 76328681472 [11972.530200] item 11 key (76321849344 169 0) itemoff 15887 itemsize 33 [11972.530200] extent refs 1 gen 1541 flags 258 [11972.530201] shared block backref parent 76328681472 [11972.530202] item 12 key (76321865728 169 0) itemoff 15854 itemsize 33 [11972.530203] extent refs 1 gen 1541 flags 258 [11972.530203] shared block backref parent 76328681472 [11972.530204] item 13 key (76321882112 169 0) itemoff 15749 itemsize 105 [11972.530205] extent refs 9 gen 1687 flags 258 [11972.530206] tree block backref root 622 [11972.530206] shared block backref parent 215764484096 [11972.530207] shared block backref parent 215534108672 [11972.530207] shared block backref parent 156403171328 [11972.530208] shared block backref parent 143508340736 [11972.530208] shared block backref parent 108430950400 [11972.530209] shared block backref parent 108166725632 [11972.530209] shared block backref parent 76354371584 [11972.530210] shared block backref parent 555204608 [11972.530211] item 14 key (76321898496 169 0) itemoff 15644 itemsize 105 [11972.530212] extent refs 9 gen 1687 flags 258 [11972.530212] tree block backref root 622 [11972.530213] shared block backref parent 215764484096 [11972.530213] shared block backref parent 215534108672 [11972.530214] shared block backref parent 156403171328 [11972.530214] shared block backref parent 143508340736 [11972.530215] shared block backref parent 108430950400 [11972.530215] shared block backref parent 108166725632 [11972.530215] shared block backref parent 76354371584 [11972.530216] shared block backref parent 555204608 [11972.530217] item 15 key (76321914880 169 0) itemoff 15539 itemsize 105 [11972.530218] extent refs 9 gen 1687 flags 258 [11972.530218] tree block backref root 622 [11972.530219] shared block backref parent 215764484096 [11972.530219] shared block backref parent 215534108672 [11972.530220] shared block backref parent 156403171328 [11972.530220] shared block backref parent 143508340736 [11972.530220] shared block backref parent 108430950400 [11972.530221] shared block backref parent 108166725632 [11972.530221] shared block backref parent 76354371584 [11972.530222] shared block backref parent 555204608 [11972.530223] item 16 key (76321931264 169 0) itemoff 15434 itemsize 105 [11972.530224] extent refs 9 gen 1687 flags 258 [11972.530224] tree block backref root 622 [11972.530225] shared block backref parent 215764484096 [11972.530225] shared block backref parent 215534108672 [11972.530225] shared block backref parent 156403171328 [11972.530226] shared block backref parent 143508340736 [11972.530226] shared block backref parent 108430950400 [11972.530227] shared block backref parent 108166725632 [11972.530227] shared block backref parent 76354371584 [11972.530228] shared block backref parent 555204608 [11972.530229] item 17 key (76321947648 169 0) itemoff 15329 itemsize 105 [11972.530229] extent refs 9 gen 1687 flags 258 [11972.530230] tree block backref root 622 [11972.530230] shared block backref parent 215764484096 [11972.530231] shared block backref parent 215534108672 [11972.530231] shared block backref parent 156403171328 [11972.530232] shared block backref parent 143508340736 [11972.530232] shared block backref parent 108430950400 [11972.530233] shared block backref parent 108166725632 [11972.530233] shared block backref parent 76354371584 [11972.530234] shared block backref parent 555204608 [11972.530235] item 18 key (76321964032 169 1) itemoff 15089 itemsize 240 [11972.530236] extent refs 24 gen 1541 flags 258 [11972.530236] tree block backref root 616 [11972.530237] tree block backref root 598 [11972.530237] tree block backref root 593 [11972.530238] tree block backref root 587 [11972.530238] tree block backref root 574 [11972.530239] tree block backref root 556 [11972.530240] tree block backref root 549 [11972.530240] tree block backref root 540 [11972.530241] tree block backref root 536 [11972.530241] tree block backref root 527 [11972.530241] tree block backref root 506 [11972.530242] tree block backref root 479 [11972.530242] tree block backref root 473 [11972.530243] tree block backref root 450 [11972.530243] tree block backref root 440 [11972.530244] tree block backref root 435 [11972.530244] tree block backref root 427 [11972.530245] tree block backref root 422 [11972.530245] tree block backref root 417 [11972.530246] tree block backref root 411 [11972.530246] tree block backref root 404 [11972.530247] tree block backref root 397 [11972.530247] tree block backref root 393 [11972.530248] tree block backref root 370 [11972.530249] item 19 key (76321980416 169 0) itemoff 14984 itemsize 105 [11972.530250] extent refs 9 gen 1689 flags 258 [11972.530250] tree block backref root 622 [11972.530251] shared block backref parent 215765073920 [11972.530251] shared block backref parent 215534190592 [11972.530252] shared block backref parent 156404858880 [11972.530253] shared block backref parent 143509585920 [11972.530254] shared block backref parent 108433981440 [11972.530254] shared block backref parent 108168609792 [11972.530255] shared block backref parent 76376768512 [11972.530255] shared block backref parent 557236224 [11972.530256] item 20 key (76321996800 169 0) itemoff 14951 itemsize 33 [11972.530257] extent refs 1 gen 1541 flags 258 [11972.530258] shared block backref parent 76328681472 [11972.530259] item 21 key (76322013184 169 0) itemoff 14918 itemsize 33 [11972.530260] extent refs 1 gen 1541 flags 258 [11972.530260] shared block backref parent 76328681472 [11972.530261] item 22 key (76322029568 169 0) itemoff 14885 itemsize 33 [11972.530262] extent refs 1 gen 1541 flags 258 [11972.530263] shared block backref parent 76328681472 [11972.530264] item 23 key (76322045952 169 0) itemoff 14780 itemsize 105 [11972.530264] extent refs 9 gen 1689 flags 258 [11972.530265] tree block backref root 622 [11972.530266] shared block backref parent 215765073920 [11972.530266] shared block backref parent 215534190592 [11972.530267] shared block backref parent 156404858880 [11972.530267] shared block backref parent 143509585920 [11972.530267] shared block backref parent 108433981440 [11972.530268] shared block backref parent 108168609792 [11972.530268] shared block backref parent 76376768512 [11972.530269] shared block backref parent 557236224 [11972.530270] item 24 key (76322062336 169 0) itemoff 14747 itemsize 33 [11972.530271] extent refs 1 gen 1541 flags 258 [11972.530271] shared block backref parent 76328681472 [11972.530273] item 25 key (76322078720 169 0) itemoff 14714 itemsize 33 [11972.530273] extent refs 1 gen 1541 flags 258 [11972.530274] shared block backref parent 76328681472 [11972.530275] item 26 key (76322095104 169 0) itemoff 14681 itemsize 33 [11972.530276] extent refs 1 gen 1541 flags 258 [11972.530276] shared block backref parent 76328681472 [11972.530277] item 27 key (76322111488 169 0) itemoff 14648 itemsize 33 [11972.530278] extent refs 1 gen 1541 flags 258 [11972.530279] shared block backref parent 76328681472 [11972.530280] item 28 key (76322127872 169 0) itemoff 14615 itemsize 33 [11972.530280] extent refs 1 gen 1541 flags 258 [11972.530281] shared block backref parent 76328681472 [11972.530282] item 29 key (76322144256 169 0) itemoff 14582 itemsize 33 [11972.530283] extent refs 1 gen 1541 flags 258 [11972.530283] shared block backref parent 76328681472 [11972.530284] item 30 key (76322160640 169 0) itemoff 14549 itemsize 33 [11972.530285] extent refs 1 gen 1541 flags 258 [11972.530286] shared block backref parent 76328681472 [11972.530287] item 31 key (76322177024 169 0) itemoff 14516 itemsize 33 [11972.530288] extent refs 1 gen 1541 flags 258 [11972.530289] shared block backref parent 76328681472 [11972.530290] item 32 key (76322193408 169 0) itemoff 14483 itemsize 33 [11972.530291] extent refs 1 gen 1541 flags 258 [11972.530291] shared block backref parent 76328681472 [11972.530293] item 33 key (76322209792 169 0) itemoff 14450 itemsize 33 [11972.530294] extent refs 1 gen 1541 flags 258 [11972.530294] shared block backref parent 76328681472 [11972.530295] item 34 key (76322226176 169 0) itemoff 14417 itemsize 33 [11972.530296] extent refs 1 gen 1541 flags 258 [11972.530297] shared block backref parent 76328681472 [11972.530298] item 35 key (76322242560 169 0) itemoff 14384 itemsize 33 [11972.530299] extent refs 1 gen 1541 flags 258 [11972.530299] shared block backref parent 76328681472 [11972.530301] item 36 key (76322258944 169 0) itemoff 14351 itemsize 33 [11972.530302] extent refs 1 gen 1541 flags 258 [11972.530302] shared block backref parent 76328681472 [11972.530303] item 37 key (76322275328 169 0) itemoff 14318 itemsize 33 [11972.530304] extent refs 1 gen 1541 flags 258 [11972.530305] shared block backref parent 76328681472 [11972.530306] item 38 key (76322291712 169 0) itemoff 14285 itemsize 33 [11972.530307] extent refs 1 gen 1541 flags 258 [11972.530308] shared block backref parent 76328681472 [11972.530309] item 39 key (76322308096 169 0) itemoff 14252 itemsize 33 [11972.530310] extent refs 1 gen 1541 flags 258 [11972.530311] shared block backref parent 76328681472 [11972.530312] item 40 key (76322324480 169 0) itemoff 14219 itemsize 33 [11972.530313] extent refs 1 gen 1541 flags 258 [11972.530314] shared block backref parent 76328681472 [11972.530315] item 41 key (76322340864 169 0) itemoff 14186 itemsize 33 [11972.530316] extent refs 1 gen 1541 flags 258 [11972.530317] shared block backref parent 76328681472 [11972.530318] item 42 key (76322357248 169 0) itemoff 14153 itemsize 33 [11972.530319] extent refs 1 gen 1541 flags 258 [11972.530320] shared block backref parent 76328681472 [11972.530321] item 43 key (76322373632 169 0) itemoff 14120 itemsize 33 [11972.530322] extent refs 1 gen 1541 flags 258 [11972.530322] shared block backref parent 76328681472 [11972.530324] item 44 key (76322390016 169 0) itemoff 14087 itemsize 33 [11972.530325] extent refs 1 gen 1541 flags 258 [11972.530325] shared block backref parent 76328681472 [11972.530326] item 45 key (76322406400 169 0) itemoff 14054 itemsize 33 [11972.530327] extent refs 1 gen 1541 flags 258 [11972.530328] shared block backref parent 76328681472 [11972.530329] item 46 key (76322422784 169 0) itemoff 14021 itemsize 33 [11972.530330] extent refs 1 gen 1541 flags 258 [11972.530331] shared block backref parent 76328681472 [11972.530332] item 47 key (76322439168 169 0) itemoff 13988 itemsize 33 [11972.530333] extent refs 1 gen 1541 flags 258 [11972.530334] shared block backref parent 76328681472 [11972.530335] item 48 key (76322455552 169 0) itemoff 13955 itemsize 33 [11972.530336] extent refs 1 gen 1541 flags 258 [11972.530337] shared block backref parent 76328681472 [11972.530338] item 49 key (76322471936 169 0) itemoff 13922 itemsize 33 [11972.530339] extent refs 1 gen 1541 flags 258 [11972.530339] shared block backref parent 76328681472 [11972.530340] item 50 key (76322488320 169 0) itemoff 13889 itemsize 33 [11972.530341] extent refs 1 gen 1541 flags 258 [11972.530342] shared block backref parent 76328681472 [11972.530343] item 51 key (76322504704 169 0) itemoff 13856 itemsize 33 [11972.530343] extent refs 1 gen 1541 flags 258 [11972.530344] shared block backref parent 76328681472 [11972.530345] item 52 key (76322521088 169 0) itemoff 13823 itemsize 33 [11972.530346] extent refs 1 gen 1541 flags 258 [11972.530346] shared block backref parent 76328681472 [11972.530348] item 53 key (76322537472 169 0) itemoff 13790 itemsize 33 [11972.530348] extent refs 1 gen 1541 flags 258 [11972.530349] shared block backref parent 76328681472 [11972.530350] item 54 key (76322553856 169 0) itemoff 13757 itemsize 33 [11972.530351] extent refs 1 gen 1541 flags 258 [11972.530352] shared block backref parent 76328681472 [11972.530353] item 55 key (76322570240 169 0) itemoff 13724 itemsize 33 [11972.530354] extent refs 1 gen 1541 flags 258 [11972.530354] shared block backref parent 76328681472 [11972.530356] item 56 key (76322586624 169 0) itemoff 13691 itemsize 33 [11972.530357] extent refs 1 gen 1541 flags 258 [11972.530357] shared block backref parent 76328681472 [11972.530358] item 57 key (76322603008 169 0) itemoff 13658 itemsize 33 [11972.530359] extent refs 1 gen 1541 flags 258 [11972.530360] shared block backref parent 76328681472 [11972.530361] item 58 key (76322619392 169 0) itemoff 13625 itemsize 33 [11972.530362] extent refs 1 gen 1541 flags 258 [11972.530362] shared block backref parent 76328681472 [11972.530363] item 59 key (76322635776 169 0) itemoff 13592 itemsize 33 [11972.530364] extent refs 1 gen 1541 flags 258 [11972.530364] shared block backref parent 76328681472 [11972.530365] item 60 key (76322652160 169 0) itemoff 13559 itemsize 33 [11972.530366] extent refs 1 gen 1541 flags 258 [11972.530366] shared block backref parent 76328681472 [11972.530367] item 61 key (76322668544 169 0) itemoff 13526 itemsize 33 [11972.530368] extent refs 1 gen 1541 flags 258 [11972.530368] shared block backref parent 76328681472 [11972.530369] item 62 key (76322684928 169 0) itemoff 13493 itemsize 33 [11972.530370] extent refs 1 gen 1541 flags 258 [11972.530370] shared block backref parent 76328681472 [11972.530371] item 63 key (76322701312 169 0) itemoff 13460 itemsize 33 [11972.530371] extent refs 1 gen 1541 flags 258 [11972.530372] shared block backref parent 76328681472 [11972.530373] item 64 key (76322717696 169 0) itemoff 13427 itemsize 33 [11972.530373] extent refs 1 gen 1541 flags 258 [11972.530374] shared block backref parent 76328681472 [11972.530375] item 65 key (76322734080 169 0) itemoff 13394 itemsize 33 [11972.530375] extent refs 1 gen 1541 flags 258 [11972.530376] shared block backref parent 76328681472 [11972.530377] item 66 key (76322750464 169 0) itemoff 13361 itemsize 33 [11972.530378] extent refs 1 gen 1541 flags 258 [11972.530378] shared block backref parent 76328681472 [11972.530380] item 67 key (76322766848 169 0) itemoff 13328 itemsize 33 [11972.530381] extent refs 1 gen 1541 flags 258 [11972.530381] shared block backref parent 76328681472 [11972.530382] item 68 key (76322783232 169 0) itemoff 13295 itemsize 33 [11972.530383] extent refs 1 gen 1541 flags 258 [11972.530384] shared block backref parent 76328681472 [11972.530385] item 69 key (76322799616 169 0) itemoff 13262 itemsize 33 [11972.530386] extent refs 1 gen 1541 flags 258 [11972.530387] shared block backref parent 76328681472 [11972.530388] item 70 key (76322816000 169 0) itemoff 13229 itemsize 33 [11972.530389] extent refs 1 gen 1541 flags 258 [11972.530389] shared block backref parent 76328681472 [11972.530390] item 71 key (76322832384 169 0) itemoff 13196 itemsize 33 [11972.530391] extent refs 1 gen 1541 flags 258 [11972.530392] shared block backref parent 76328681472 [11972.530393] item 72 key (76322848768 169 0) itemoff 13163 itemsize 33 [11972.530394] extent refs 1 gen 1541 flags 258 [11972.530395] shared block backref parent 76328681472 [11972.530396] item 73 key (76322865152 169 0) itemoff 13130 itemsize 33 [11972.530396] extent refs 1 gen 1541 flags 258 [11972.530397] shared block backref parent 76328681472 [11972.530398] item 74 key (76322881536 169 0) itemoff 13097 itemsize 33 [11972.530399] extent refs 1 gen 1541 flags 258 [11972.530400] shared block backref parent 76328681472 [11972.530402] item 75 key (76322897920 169 0) itemoff 13064 itemsize 33 [11972.530402] extent refs 1 gen 1541 flags 258 [11972.530403] shared block backref parent 76328681472 [11972.530404] item 76 key (76322914304 169 0) itemoff 13031 itemsize 33 [11972.530405] extent refs 1 gen 1541 flags 258 [11972.530405] shared block backref parent 76328681472 [11972.530406] item 77 key (76322930688 169 0) itemoff 12998 itemsize 33 [11972.530407] extent refs 1 gen 1541 flags 258 [11972.530408] shared block backref parent 76328681472 [11972.530409] item 78 key (76322947072 169 0) itemoff 12965 itemsize 33 [11972.530409] extent refs 1 gen 1541 flags 258 [11972.530410] shared block backref parent 76328681472 [11972.530411] item 79 key (76322963456 169 0) itemoff 12932 itemsize 33 [11972.530412] extent refs 1 gen 1541 flags 258 [11972.530412] shared block backref parent 76328681472 [11972.530413] item 80 key (76322979840 169 0) itemoff 12899 itemsize 33 [11972.530414] extent refs 1 gen 1541 flags 258 [11972.530414] shared block backref parent 76328681472 [11972.530415] item 81 key (76322996224 169 0) itemoff 12866 itemsize 33 [11972.530416] extent refs 1 gen 1541 flags 258 [11972.530416] shared block backref parent 76328681472 [11972.530417] item 82 key (76323012608 169 0) itemoff 12833 itemsize 33 [11972.530418] extent refs 1 gen 1541 flags 258 [11972.530419] shared block backref parent 76328681472 [11972.530420] item 83 key (76323028992 169 0) itemoff 12800 itemsize 33 [11972.530420] extent refs 1 gen 1541 flags 258 [11972.530421] shared block backref parent 76328681472 [11972.530422] item 84 key (76323045376 169 0) itemoff 12767 itemsize 33 [11972.530423] extent refs 1 gen 1541 flags 258 [11972.530423] shared block backref parent 76328681472 [11972.530424] item 85 key (76323061760 169 0) itemoff 12734 itemsize 33 [11972.530425] extent refs 1 gen 1541 flags 258 [11972.530425] shared block backref parent 76328681472 [11972.530426] item 86 key (76323078144 169 0) itemoff 12701 itemsize 33 [11972.530427] extent refs 1 gen 1541 flags 258 [11972.530427] shared block backref parent 76328681472 [11972.530428] item 87 key (76323094528 169 0) itemoff 12668 itemsize 33 [11972.530429] extent refs 1 gen 1541 flags 258 [11972.530430] shared block backref parent 76328681472 [11972.530431] item 88 key (76323110912 169 0) itemoff 12635 itemsize 33 [11972.530431] extent refs 1 gen 1541 flags 258 [11972.530432] shared block backref parent 76328681472 [11972.530433] item 89 key (76323127296 169 0) itemoff 12602 itemsize 33 [11972.530433] extent refs 1 gen 1541 flags 258 [11972.530434] shared block backref parent 76328681472 [11972.530435] item 90 key (76323143680 169 0) itemoff 12569 itemsize 33 [11972.530436] extent refs 1 gen 1541 flags 258 [11972.530436] shared block backref parent 76328681472 [11972.530437] item 91 key (76323160064 169 0) itemoff 12536 itemsize 33 [11972.530438] extent refs 1 gen 1541 flags 258 [11972.530438] shared block backref parent 76328681472 [11972.530439] item 92 key (76323176448 169 0) itemoff 12503 itemsize 33 [11972.530440] extent refs 1 gen 1541 flags 258 [11972.530440] shared block backref parent 76328681472 [11972.530441] item 93 key (76323192832 169 0) itemoff 12470 itemsize 33 [11972.530442] extent refs 1 gen 1541 flags 258 [11972.530443] shared block backref parent 76328681472 [11972.530444] item 94 key (76323209216 169 0) itemoff 12437 itemsize 33 [11972.530444] extent refs 1 gen 1541 flags 258 [11972.530445] shared block backref parent 76328681472 [11972.530446] item 95 key (76323225600 169 0) itemoff 12404 itemsize 33 [11972.530447] extent refs 1 gen 1541 flags 258 [11972.530447] shared block backref parent 76328681472 [11972.530448] item 96 key (76323241984 169 0) itemoff 12371 itemsize 33 [11972.530449] extent refs 1 gen 1541 flags 258 [11972.530449] shared block backref parent 76328681472 [11972.530450] item 97 key (76323258368 169 0) itemoff 12338 itemsize 33 [11972.530451] extent refs 1 gen 1541 flags 258 [11972.530452] shared block backref parent 76328681472 [11972.530452] item 98 key (76323274752 169 0) itemoff 12305 itemsize 33 [11972.530453] extent refs 1 gen 1541 flags 258 [11972.530454] shared block backref parent 76328681472 [11972.530455] item 99 key (76323291136 169 0) itemoff 12272 itemsize 33 [11972.530455] extent refs 1 gen 1541 flags 258 [11972.530456] shared block backref parent 76328681472 [11972.530457] item 100 key (76323307520 169 0) itemoff 12239 itemsize 33 [11972.530457] extent refs 1 gen 1541 flags 258 [11972.530458] shared block backref parent 76328681472 [11972.530459] item 101 key (76323323904 169 0) itemoff 12206 itemsize 33 [11972.530460] extent refs 1 gen 1541 flags 258 [11972.530460] shared block backref parent 76328681472 [11972.530461] item 102 key (76323340288 169 0) itemoff 12137 itemsize 69 [11972.530462] extent refs 5 gen 1877 flags 258 [11972.530462] shared block backref parent 76271157248 [11972.530463] shared block backref parent 511655936 [11972.530463] shared block backref parent 391610368 [11972.530464] shared block backref parent 386957312 [11972.530464] shared block backref parent 105381888 [11972.530465] item 103 key (76323356672 169 0) itemoff 12104 itemsize 33 [11972.530466] extent refs 1 gen 1541 flags 258 [11972.530466] shared block backref parent 76328681472 [11972.530467] item 104 key (76323373056 169 0) itemoff 12035 itemsize 69 [11972.530468] extent refs 5 gen 1877 flags 258 [11972.530468] shared block backref parent 76271157248 [11972.530469] shared block backref parent 511655936 [11972.530469] shared block backref parent 391610368 [11972.530470] shared block backref parent 386957312 [11972.530470] shared block backref parent 105381888 [11972.530471] item 105 key (76323389440 169 0) itemoff 12002 itemsize 33 [11972.530472] extent refs 1 gen 1541 flags 258 [11972.530473] shared block backref parent 76328681472 [11972.530474] item 106 key (76323405824 169 0) itemoff 11969 itemsize 33 [11972.530474] extent refs 1 gen 1541 flags 258 [11972.530475] shared block backref parent 76328681472 [11972.530476] item 107 key (76323422208 169 0) itemoff 11936 itemsize 33 [11972.530476] extent refs 1 gen 1541 flags 258 [11972.530477] shared block backref parent 76328681472 [11972.530478] item 108 key (76323438592 169 0) itemoff 11903 itemsize 33 [11972.530479] extent refs 1 gen 1541 flags 258 [11972.530479] shared block backref parent 76328681472 [11972.530480] item 109 key (76323454976 169 0) itemoff 11870 itemsize 33 [11972.530481] extent refs 1 gen 1541 flags 258 [11972.530482] shared block backref parent 76328681472 [11972.530483] item 110 key (76323471360 169 0) itemoff 11837 itemsize 33 [11972.530484] extent refs 1 gen 1541 flags 258 [11972.530485] shared block backref parent 76328681472 [11972.530486] item 111 key (76323487744 169 0) itemoff 11804 itemsize 33 [11972.530487] extent refs 1 gen 1541 flags 258 [11972.530488] shared block backref parent 76328681472 [11972.530489] item 112 key (76323504128 169 0) itemoff 11771 itemsize 33 [11972.530490] extent refs 1 gen 1541 flags 258 [11972.530490] shared block backref parent 76328681472 [11972.530491] item 113 key (76323520512 169 0) itemoff 11738 itemsize 33 [11972.530492] extent refs 1 gen 1541 flags 258 [11972.530493] shared block backref parent 76328681472 [11972.530494] item 114 key (76323536896 169 0) itemoff 11705 itemsize 33 [11972.530495] extent refs 1 gen 1541 flags 258 [11972.530496] shared block backref parent 76328681472 [11972.530497] item 115 key (76323553280 169 0) itemoff 11672 itemsize 33 [11972.530497] extent refs 1 gen 1541 flags 258 [11972.530498] shared block backref parent 76328681472 [11972.530499] item 116 key (76323569664 169 0) itemoff 11639 itemsize 33 [11972.530499] extent refs 1 gen 1541 flags 258 [11972.530500] shared block backref parent 76328681472 [11972.530501] item 117 key (76323586048 169 0) itemoff 11606 itemsize 33 [11972.530501] extent refs 1 gen 1541 flags 258 [11972.530502] shared block backref parent 76328681472 [11972.530503] item 118 key (76323602432 169 0) itemoff 11573 itemsize 33 [11972.530503] extent refs 1 gen 1541 flags 258 [11972.530504] shared block backref parent 76328681472 [11972.530506] BTRFS error (device dm-1): unable to find ref byte nr 76321964032 parent 0 root 613 owner 1 offset 0 [11972.530510] BTRFS: Transaction aborted (error -2) [11972.530535] ------------[ cut here ]------------ [11972.530553] WARNING: CPU: 1 PID: 10985 at fs/btrfs/extent-tree.c:6948 __btrfs_free_extent.isra.62+0x255/0xdc0 [btrfs] [11972.530554] Modules linked in: vfat fat uas usb_storage rfcomm ccm bnep sunrpc btusb btrtl btbcm uvcvideo btintel bluetooth videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev ecdh_generic media intel_powerclamp coretemp iTCO_wdt iTCO_vendor_support arc4 kvm_intel hp_wmi iwldvm sparse_keymap ppdev mac80211 kvm mei_wdt irqbypass intel_cstate intel_uncore iwlwifi joydev cfg80211 intel_ips snd_hda_codec_hdmi acpi_cpufreq snd_hda_codec_idt tpm_infineon snd_hda_codec_generic lpc_ich rfkill snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_seq wmi snd_seq_device snd_pcm snd_timer parport_pc parport snd soundcore hp_accel tpm_tis tpm_tis_core lis3lv02d tpm input_polldev mei_me mei shpchp binfmt_misc vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) btrfs xor raid6_pq dm_crypt [11972.530586] i915 mmc_block bcache crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel i2c_algo_bit serio_raw drm_kms_helper sdhci_pci sdhci e1000e drm mmc_core ptp pps_core video [11972.530596] CPU: 1 PID: 10985 Comm: btrfs-cleaner Tainted: G W OE 4.12.9-300.fc26.x86_64 #1 [11972.530596] Hardware name: Hewlett-Packard HP EliteBook 2540p/7008, BIOS 68CSU Ver. F.60 11/11/2015 [11972.530598] task: ffff8c7951c2a480 task.stack: ffffb13cc41f0000 [11972.530615] RIP: 0010:__btrfs_free_extent.isra.62+0x255/0xdc0 [btrfs] [11972.530616] RSP: 0018:ffffb13cc41f3bb8 EFLAGS: 00010286 [11972.530617] RAX: 0000000000000025 RBX: 0000000000000000 RCX: 0000000000000006 [11972.530617] RDX: 0000000000000000 RSI: 0000000000000086 RDI: ffff8c79bbc4e120 [11972.530618] RBP: ffffb13cc41f3c70 R08: 0000000000000587 R09: 0000000000000004 [11972.530619] R10: 0000000000000000 R11: 0000000000000001 R12: 00000011c524c000 [11972.530619] R13: ffff8c7804110000 R14: 00000000fffffffe R15: ffff8c79a8984620 [11972.530620] FS: 0000000000000000(0000) GS:ffff8c79bbc40000(0000) knlGS:0000000000000000 [11972.530621] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [11972.530622] CR2: 00007f908c811020 CR3: 000000008fe09000 CR4: 00000000000006a0 [11972.530622] Call Trace: [11972.530643] ? btrfs_merge_delayed_refs+0x63/0x540 [btrfs] [11972.530662] ? add_delayed_ref_head.isra.9+0x1d7/0x310 [btrfs] [11972.530677] __btrfs_run_delayed_refs+0x791/0x12b0 [btrfs] [11972.530694] btrfs_run_delayed_refs+0x6b/0x270 [btrfs] [11972.530708] ? walk_up_tree+0xed/0x210 [btrfs] [11972.530728] btrfs_should_end_transaction+0x55/0x60 [btrfs] [11972.530760] btrfs_drop_snapshot+0x3db/0x8c0 [btrfs] [11972.530781] btrfs_clean_one_deleted_snapshot+0xc1/0x110 [btrfs] [11972.530799] cleaner_kthread+0x14a/0x180 [btrfs] [11972.530803] kthread+0x125/0x140 [11972.530822] ? __btree_submit_bio_start+0x20/0x20 [btrfs] [11972.530823] ? kthread_park+0x60/0x60 [11972.530825] ret_from_fork+0x25/0x30 [11972.530826] Code: fe ff 48 8b 45 90 48 8b 40 60 f0 0f ba a8 18 ce 00 00 02 0f 92 c0 84 c0 41 59 75 11 44 89 f6 48 c7 c7 60 08 61 c0 e8 fc 02 c6 fb <0f> ff 48 8b 7d 90 b9 fe ff ff ff ba 24 1b 00 00 48 c7 c6 e0 a7 [11972.530854] ---[ end trace ed0da2429768f974 ]--- [11972.530858] BTRFS: error (device dm-1) in __btrfs_free_extent:6948: errno=-2 No such entry [11972.530860] BTRFS info (device dm-1): forced readonly [11972.530866] BTRFS: error (device dm-1) in btrfs_run_delayed_refs:2971: errno=-2 No such entry 2017-07-31 21:13 GMT+02:00 Ivan Sizov <sivan...@gmail.com>: > 2017-07-11 21:57 GMT+03:00 Clemens Eisserer <linuxhi...@gmail.com>: >> Hi, >> >> My external drive (single metadata, inline) caused an Ooops recently >> and went read-only. >> I wonder, has this something to do with the btrfs issues some have with 4.11? >> >> Best regards, Clemens >> >> [ 619.850316] perf: interrupt took too long (3958 > 3941), lowering >> kernel.perf_event_max_sample_rate to 50000 >> [ 625.656835] ------------[ cut here ]------------ >> [ 625.656880] WARNING: CPU: 0 PID: 2919 at >> fs/btrfs/extent-tree.c:6936 __btrfs_free_extent.isra.61+0x7bf/0xe40 >> [btrfs] >> [ 625.656883] Modules linked in: uas usb_storage rfcomm ccm bnep >> sunrpc uvcvideo videobuf2_vmalloc videobuf2_memops btusb btrtl >> videobuf2_v4l2 btbcm btintel videobuf2_core bluetooth videodev media >> mei_wdt iTCO_wdt iTCO_vendor_support intel_powerclamp coretemp hp_wmi >> kvm_intel sparse_keymap ppdev snd_hda_codec_hdmi kvm arc4 >> snd_hda_codec_idt snd_hda_codec_generic iwldvm snd_hda_intel mac80211 >> snd_hda_codec irqbypass intel_cstate snd_hda_core intel_uncore iwlwifi >> snd_hwdep snd_seq snd_seq_device joydev intel_ips snd_pcm cfg80211 >> acpi_cpufreq tpm_infineon snd_timer snd rfkill lpc_ich soundcore >> shpchp mei_me mei wmi parport_pc parport hp_accel lis3lv02d >> input_polldev tpm_tis tpm_tis_core tpm binfmt_misc vboxpci(OE) >> vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) btrfs xor raid6_pq dm_crypt >> i915 mmc_block bcache >> [ 625.656931] crct10dif_pclmul crc32_pclmul crc32c_intel >> ghash_clmulni_intel i2c_algo_bit drm_kms_helper serio_raw sdhci_pci >> drm e1000e sdhci mmc_core ptp pps_core video >> [ 625.656943] CPU: 0 PID: 2919 Comm: btrfs-cleaner Tainted: G >> OE 4.11.8-200.fc25.x86_64 #1 >> [ 625.656944] Hardware name: Hewlett-Packard HP EliteBook 2540p/7008, >> BIOS 68CSU Ver. F.60 11/11/2015 >> [ 625.656945] Call Trace: >> [ 625.656952] dump_stack+0x63/0x86 >> [ 625.656955] __warn+0xcb/0xf0 >> [ 625.656956] warn_slowpath_null+0x1d/0x20 >> [ 625.656968] __btrfs_free_extent.isra.61+0x7bf/0xe40 [btrfs] >> [ 625.656977] ? btrfs_search_slot+0x429/0x9d0 [btrfs] >> [ 625.656992] ? btrfs_merge_delayed_refs+0x61/0x6c0 [btrfs] >> [ 625.657002] __btrfs_run_delayed_refs+0x501/0x12b0 [btrfs] >> [ 625.657017] ? btrfs_get_token_64+0x105/0x120 [btrfs] >> [ 625.657028] btrfs_run_delayed_refs+0x8f/0x2a0 [btrfs] >> [ 625.657042] ? free_extent_buffer+0x4b/0xa0 [btrfs] >> [ 625.657055] btrfs_should_end_transaction+0x48/0x60 [btrfs] >> [ 625.657066] btrfs_drop_snapshot+0x3e0/0x920 [btrfs] >> [ 625.657079] btrfs_clean_one_deleted_snapshot+0xbc/0x100 [btrfs] >> [ 625.657091] cleaner_kthread+0x133/0x180 [btrfs] >> [ 625.657093] kthread+0x109/0x140 >> [ 625.657105] ? __btree_submit_bio_start+0x20/0x20 [btrfs] >> [ 625.657106] ? kthread_park+0x90/0x90 >> [ 625.657110] ret_from_fork+0x2c/0x40 >> [ 625.657164] ---[ end trace 1c4d5dd9396052ae ]--- >> [ 625.657168] BTRFS info (device dm-1): leaf 183797051392 total ptrs >> 64 free space 186 >> [ 625.657172] item 0 key (178663501824 169 0) itemoff 3926 itemsize 69 >> [ 625.657173] extent refs 5 gen 1026 flags 258 >> [ 625.657174] shared block backref parent 245739773952 >> [ 625.657174] shared block backref parent 245673074688 >> [ 625.657174] shared block backref parent 181409894400 >> [ 625.657175] shared block backref parent 181343162368 >> [ 625.657175] shared block backref parent 180773711872 >> [ 625.657176] item 1 key (178663505920 168 4096) itemoff 3889 itemsize 37 >> [ 625.657177] extent refs 1 gen 1045 flags 1 >> [ 625.657177] shared data backref parent 179187650560 count 1 >> [ 625.657178] item 2 key (178663510016 168 4096) itemoff 3852 itemsize 37 >> [ 625.657179] extent refs 1 gen 1180 flags 1 >> [ 625.657180] shared data backref parent 245746434048 count 1 >> [ 625.657180] item 3 key (178663514112 169 0) itemoff 3819 itemsize 33 >> [ 625.657181] extent refs 1 gen 1098 flags 2 >> [ 625.657182] tree block backref root 2 >> [ 625.657183] item 4 key (178663518208 168 4096) itemoff 3769 itemsize 50 >> [ 625.657183] extent refs 2 gen 1030 flags 1 >> [ 625.657184] shared data backref parent 178675068928 count 1 >> [ 625.657184] shared data backref parent 178137387008 count 1 >> [ 625.657185] item 5 key (178663522304 168 4096) itemoff 3732 itemsize 37 >> [ 625.657186] extent refs 1 gen 1053 flags 1 >> [ 625.657186] shared data backref parent 180441329664 count 1 >> [ 625.657187] item 6 key (178663526400 169 0) itemoff 3555 itemsize 177 >> [ 625.657188] extent refs 17 gen 1196 flags 258 >> [ 625.657188] shared block backref parent 415361105920 >> [ 625.657189] shared block backref parent 415227764736 >> [ 625.657189] shared block backref parent 415125512192 >> [ 625.657190] shared block backref parent 414450216960 >> [ 625.657190] shared block backref parent 414116110336 >> [ 625.657190] shared block backref parent 414103474176 >> [ 625.657191] shared block backref parent 412705067008 >> [ 625.657191] shared block backref parent 412643041280 >> [ 625.657192] shared block backref parent 390315855872 >> [ 625.657192] shared block backref parent 287440842752 >> [ 625.657192] shared block backref parent 287294996480 >> [ 625.657193] shared block backref parent 266445434880 >> [ 625.657193] shared block backref parent 256855588864 >> [ 625.657194] shared block backref parent 256145903616 >> [ 625.657194] shared block backref parent 253848592384 >> [ 625.657194] shared block backref parent 248051871744 >> [ 625.657195] shared block backref parent 245527207936 >> [ 625.657196] item 7 key (178663530496 169 2) itemoff 3351 itemsize 204 >> [ 625.657196] extent refs 35 gen 1026 flags 258 >> [ 625.657197] tree block backref root 736 >> [ 625.657197] tree block backref root 730 >> [ 625.657198] tree block backref root 726 >> [ 625.657198] tree block backref root 721 >> [ 625.657198] tree block backref root 717 >> [ 625.657199] tree block backref root 603 >> [ 625.657199] tree block backref root 599 >> [ 625.657200] tree block backref root 591 >> [ 625.657200] tree block backref root 585 >> [ 625.657201] tree block backref root 579 >> [ 625.657201] tree block backref root 570 >> [ 625.657201] tree block backref root 556 >> [ 625.657202] tree block backref root 543 >> [ 625.657202] tree block backref root 539 >> [ 625.657203] tree block backref root 532 >> [ 625.657203] tree block backref root 523 >> [ 625.657203] tree block backref root 517 >> [ 625.657204] tree block backref root 513 >> [ 625.657204] tree block backref root 453 >> [ 625.657205] tree block backref root 444 >> [ 625.657206] item 8 key (178663530496 176 740) itemoff 3351 itemsize 0 >> [ 625.657206] tree block backref >> [ 625.657207] item 9 key (178663530496 176 745) itemoff 3351 itemsize 0 >> [ 625.657207] tree block backref >> [ 625.657208] item 10 key (178663530496 176 750) itemoff 3351 itemsize 0 >> [ 625.657209] tree block backref >> [ 625.657209] item 11 key (178663530496 176 754) itemoff 3351 itemsize 0 >> [ 625.657210] tree block backref >> [ 625.657211] item 12 key (178663530496 176 758) itemoff 3351 itemsize 0 >> [ 625.657211] tree block backref >> [ 625.657212] item 13 key (178663530496 176 762) itemoff 3351 itemsize 0 >> [ 625.657212] tree block backref >> [ 625.657213] item 14 key (178663530496 176 766) itemoff 3351 itemsize 0 >> [ 625.657213] tree block backref >> [ 625.657214] item 15 key (178663530496 176 770) itemoff 3351 itemsize 0 >> [ 625.657214] tree block backref >> [ 625.657215] item 16 key (178663530496 176 774) itemoff 3351 itemsize 0 >> [ 625.657215] tree block backref >> [ 625.657216] item 17 key (178663530496 176 778) itemoff 3351 itemsize 0 >> [ 625.657217] tree block backref >> [ 625.657217] item 18 key (178663530496 176 782) itemoff 3351 itemsize 0 >> [ 625.657218] tree block backref >> [ 625.657219] item 19 key (178663530496 176 786) itemoff 3351 itemsize 0 >> [ 625.657219] tree block backref >> [ 625.657220] item 20 key (178663530496 176 790) itemoff 3351 itemsize 0 >> [ 625.657220] tree block backref >> [ 625.657221] item 21 key (178663530496 176 794) itemoff 3351 itemsize 0 >> [ 625.657221] tree block backref >> [ 625.657222] item 22 key (178663530496 176 799) itemoff 3351 itemsize 0 >> [ 625.657222] tree block backref >> [ 625.657223] item 23 key (178663534592 168 4096) itemoff 3314 itemsize 37 >> [ 625.657224] extent refs 1 gen 1200 flags 1 >> [ 625.657224] shared data backref parent 245976125440 count 1 >> [ 625.657225] item 24 key (178663538688 168 4096) itemoff 3264 itemsize 50 >> [ 625.657226] extent refs 2 gen 1030 flags 1 >> [ 625.657227] shared data backref parent 178675068928 count 1 >> [ 625.657227] shared data backref parent 178137387008 count 1 >> [ 625.657228] item 25 key (178663542784 168 4096) itemoff 3227 itemsize 37 >> [ 625.657229] extent refs 1 gen 1082 flags 1 >> [ 625.657229] shared data backref parent 180794540032 count 1 >> [ 625.657230] item 26 key (178663546880 168 4096) itemoff 3190 itemsize 37 >> [ 625.657231] extent refs 1 gen 1026 flags 1 >> [ 625.657231] shared data backref parent 178663501824 count 1 >> [ 625.657232] item 27 key (178663550976 168 4096) itemoff 3140 itemsize 50 >> [ 625.657233] extent refs 2 gen 1030 flags 1 >> [ 625.657233] shared data backref parent 178675068928 count 1 >> [ 625.657234] shared data backref parent 178137387008 count 1 >> [ 625.657235] item 28 key (178663555072 168 4096) itemoff 3103 itemsize 37 >> [ 625.657236] extent refs 1 gen 1045 flags 1 >> [ 625.657236] shared data backref parent 179187650560 count 1 >> [ 625.657237] item 29 key (178663559168 168 4096) itemoff 3014 itemsize 89 >> [ 625.657238] extent refs 5 gen 1026 flags 1 >> [ 625.657238] shared data backref parent 286873866240 count 1 >> [ 625.657239] shared data backref parent 286709125120 count 1 >> [ 625.657239] shared data backref parent 277393047552 count 1 >> [ 625.657240] shared data backref parent 252206927872 count 1 >> [ 625.657240] shared data backref parent 178663501824 count 1 >> [ 625.657241] item 30 key (178663563264 168 12288) itemoff 2977 itemsize 37 >> [ 625.657242] extent refs 1 gen 1045 flags 1 >> [ 625.657243] shared data backref parent 178586718208 count 1 >> [ 625.657243] item 31 key (178663575552 168 4096) itemoff 2940 itemsize 37 >> [ 625.657244] extent refs 1 gen 1051 flags 1 >> [ 625.657245] shared data backref parent 179476021248 count 1 >> [ 625.657246] item 32 key (178663579648 168 4096) itemoff 2903 itemsize 37 >> [ 625.657246] extent refs 1 gen 1051 flags 1 >> [ 625.657247] shared data backref parent 179476004864 count 1 >> [ 625.657248] item 33 key (178663583744 168 4096) itemoff 2762 itemsize 141 >> [ 625.657248] extent refs 9 gen 1026 flags 1 >> [ 625.657249] shared data backref parent 257500905472 count 1 >> [ 625.657249] shared data backref parent 252206936064 count 1 >> [ 625.657250] shared data backref parent 252042674176 count 1 >> [ 625.657251] shared data backref parent 251875823616 count 1 >> [ 625.657251] shared data backref parent 245744291840 count 1 >> [ 625.657252] shared data backref parent 245673230336 count 1 >> [ 625.657252] shared data backref parent 181503750144 count 1 >> [ 625.657253] shared data backref parent 181342941184 count 1 >> [ 625.657253] shared data backref parent 178663804928 count 1 >> [ 625.657254] item 34 key (178663587840 168 4096) itemoff 2712 itemsize 50 >> [ 625.657255] extent refs 2 gen 1030 flags 1 >> [ 625.657255] shared data backref parent 178675068928 count 1 >> [ 625.657256] shared data backref parent 178137387008 count 1 >> [ 625.657257] item 35 key (178663591936 168 4096) itemoff 2675 itemsize 37 >> [ 625.657257] extent refs 1 gen 1045 flags 1 >> [ 625.657258] shared data backref parent 179187650560 count 1 >> [ 625.657259] item 36 key (178663596032 168 4096) itemoff 2638 itemsize 37 >> [ 625.657259] extent refs 1 gen 1080 flags 1 >> [ 625.657260] shared data backref parent 180566806528 count 1 >> [ 625.657261] item 37 key (178663600128 168 4096) itemoff 2588 itemsize 50 >> [ 625.657262] extent refs 2 gen 1030 flags 1 >> [ 625.657262] shared data backref parent 178675068928 count 1 >> [ 625.657263] shared data backref parent 178137387008 count 1 >> [ 625.657264] item 38 key (178663604224 168 4096) itemoff 2538 itemsize 50 >> [ 625.657264] extent refs 2 gen 1030 flags 1 >> [ 625.657265] shared data backref parent 178675068928 count 1 >> [ 625.657265] shared data backref parent 178137387008 count 1 >> [ 625.657266] item 39 key (178663608320 168 4096) itemoff 2501 itemsize 37 >> [ 625.657267] extent refs 1 gen 1045 flags 1 >> [ 625.657267] shared data backref parent 179187650560 count 1 >> [ 625.657268] item 40 key (178663612416 168 4096) itemoff 2464 itemsize 37 >> [ 625.657269] extent refs 1 gen 1040 flags 1 >> [ 625.657270] shared data backref parent 179144916992 count 1 >> [ 625.657270] item 41 key (178663616512 168 4096) itemoff 2427 itemsize 37 >> [ 625.657271] extent refs 1 gen 1044 flags 1 >> [ 625.657272] shared data backref parent 178580058112 count 1 >> [ 625.657273] item 42 key (178663620608 168 4096) itemoff 2234 itemsize 193 >> [ 625.657273] extent refs 27 gen 1090 flags 1 >> [ 625.657274] shared data backref parent 286832046080 count 1 >> [ 625.657274] shared data backref parent 286715400192 count 1 >> [ 625.657275] shared data backref parent 286690906112 count 1 >> [ 625.657275] shared data backref parent 286672891904 count 1 >> [ 625.657276] shared data backref parent 257517543424 count 1 >> [ 625.657276] shared data backref parent 253976293376 count 1 >> [ 625.657277] shared data backref parent 252231581696 count 1 >> [ 625.657277] shared data backref parent 252047101952 count 1 >> [ 625.657278] shared data backref parent 248005345280 count 1 >> [ 625.657278] shared data backref parent 246456664064 count 1 >> [ 625.657279] shared data backref parent 184333676544 count 1 >> [ 625.657280] shared data backref parent 184229064704 count 1 >> [ 625.657280] shared data backref parent 181164576768 count 1 >> [ 625.657281] item 43 key (178663620608 178 3665759692300308034) >> itemoff 2206 itemsize 28 >> [ 625.657283] extent data backref root 797 objectid 564789 offset 53248 >> count 1 >> [ 625.657284] item 44 key (178663620608 184 291363012608) itemoff >> 2202 itemsize 4 >> [ 625.657284] shared data backref count 1 >> [ 625.657285] item 45 key (178663620608 184 410261458944) itemoff >> 2198 itemsize 4 >> [ 625.657286] shared data backref count 1 >> [ 625.657286] item 46 key (178663620608 184 410405048320) itemoff >> 2194 itemsize 4 >> [ 625.657287] shared data backref count 1 >> [ 625.657288] item 47 key (178663620608 184 414798696448) itemoff >> 2190 itemsize 4 >> [ 625.657288] shared data backref count 1 >> [ 625.657289] item 48 key (178663620608 184 414805569536) itemoff >> 2186 itemsize 4 >> [ 625.657289] shared data backref count 1 >> [ 625.657290] item 49 key (178663620608 184 414906974208) itemoff >> 2182 itemsize 4 >> [ 625.657291] shared data backref count 1 >> [ 625.657292] item 50 key (178663620608 184 415082700800) itemoff >> 2178 itemsize 4 >> [ 625.657292] shared data backref count 1 >> [ 625.657293] item 51 key (178663620608 184 415170252800) itemoff >> 2174 itemsize 4 >> [ 625.657293] shared data backref count 1 >> [ 625.657294] item 52 key (178663620608 184 415185018880) itemoff >> 2170 itemsize 4 >> [ 625.657295] shared data backref count 1 >> [ 625.657295] item 53 key (178663620608 184 415186878464) itemoff >> 2166 itemsize 4 >> [ 625.657296] shared data backref count 1 >> [ 625.657297] item 54 key (178663620608 184 415188045824) itemoff >> 2162 itemsize 4 >> [ 625.657297] shared data backref count 1 >> [ 625.657298] item 55 key (178663620608 184 415272210432) itemoff >> 2158 itemsize 4 >> [ 625.657298] shared data backref count 1 >> [ 625.657299] item 56 key (178663620608 184 415298473984) itemoff >> 2154 itemsize 4 >> [ 625.657300] shared data backref count 1 >> [ 625.657301] item 57 key (178663624704 169 0) itemoff 2121 itemsize 33 >> [ 625.657301] extent refs 1 gen 1048 flags 258 >> [ 625.657302] shared block backref parent 180902735872 >> [ 625.657303] item 58 key (178663628800 168 4096) itemoff 2045 itemsize 76 >> [ 625.657303] extent refs 4 gen 1026 flags 1 >> [ 625.657304] shared data backref parent 252206940160 count 1 >> [ 625.657304] shared data backref parent 252042711040 count 1 >> [ 625.657305] shared data backref parent 184797204480 count 1 >> [ 625.657305] shared data backref parent 180623306752 count 1 >> [ 625.657306] item 59 key (178663632896 168 4096) itemoff 2008 itemsize 37 >> [ 625.657307] extent refs 1 gen 1045 flags 1 >> [ 625.657308] shared data backref parent 179187650560 count 1 >> [ 625.657308] item 60 key (178663636992 168 4096) itemoff 1932 itemsize 76 >> [ 625.657309] extent refs 4 gen 1026 flags 1 >> [ 625.657310] shared data backref parent 252206940160 count 1 >> [ 625.657310] shared data backref parent 252042711040 count 1 >> [ 625.657311] shared data backref parent 184797204480 count 1 >> [ 625.657311] shared data backref parent 180623306752 count 1 >> [ 625.657312] item 61 key (178663641088 169 0) itemoff 1899 itemsize 33 >> [ 625.657313] extent refs 1 gen 1078 flags 2 >> [ 625.657313] tree block backref root 7 >> [ 625.657314] item 62 key (178663645184 168 4096) itemoff 1862 itemsize 37 >> [ 625.657315] extent refs 1 gen 1045 flags 1 >> [ 625.657315] shared data backref parent 179187650560 count 1 >> [ 625.657316] item 63 key (178663649280 168 4096) itemoff 1786 itemsize 76 >> [ 625.657317] extent refs 4 gen 1026 flags 1 >> [ 625.657317] shared data backref parent 252206940160 count 1 >> [ 625.657318] shared data backref parent 252042711040 count 1 >> [ 625.657318] shared data backref parent 184797204480 count 1 >> [ 625.657319] shared data backref parent 180623306752 count 1 >> [ 625.657321] BTRFS error (device dm-1): unable to find ref byte nr >> 178663530496 parent 0 root 797 owner 2 offset 0 >> [ 625.657325] ------------[ cut here ]------------ >> [ 625.657338] WARNING: CPU: 0 PID: 2919 at >> fs/btrfs/extent-tree.c:6942 __btrfs_free_extent.isra.61+0x821/0xe40 >> [btrfs] >> [ 625.657340] BTRFS: Transaction aborted (error -2) >> [ 625.657340] Modules linked in: uas usb_storage rfcomm ccm bnep >> sunrpc uvcvideo videobuf2_vmalloc videobuf2_memops btusb btrtl >> videobuf2_v4l2 btbcm btintel videobuf2_core bluetooth videodev media >> mei_wdt iTCO_wdt iTCO_vendor_support intel_powerclamp coretemp hp_wmi >> kvm_intel sparse_keymap ppdev snd_hda_codec_hdmi kvm arc4 >> snd_hda_codec_idt snd_hda_codec_generic iwldvm snd_hda_intel mac80211 >> snd_hda_codec irqbypass intel_cstate snd_hda_core intel_uncore iwlwifi >> snd_hwdep snd_seq snd_seq_device joydev intel_ips snd_pcm cfg80211 >> acpi_cpufreq tpm_infineon snd_timer snd rfkill lpc_ich soundcore >> shpchp mei_me mei wmi parport_pc parport hp_accel lis3lv02d >> input_polldev tpm_tis tpm_tis_core tpm binfmt_misc vboxpci(OE) >> vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) btrfs xor raid6_pq dm_crypt >> i915 mmc_block bcache >> [ 625.657365] crct10dif_pclmul crc32_pclmul crc32c_intel >> ghash_clmulni_intel i2c_algo_bit drm_kms_helper serio_raw sdhci_pci >> drm e1000e sdhci mmc_core ptp pps_core video >> [ 625.657371] CPU: 0 PID: 2919 Comm: btrfs-cleaner Tainted: G >> W OE 4.11.8-200.fc25.x86_64 #1 >> [ 625.657372] Hardware name: Hewlett-Packard HP EliteBook 2540p/7008, >> BIOS 68CSU Ver. F.60 11/11/2015 >> [ 625.657372] Call Trace: >> [ 625.657374] dump_stack+0x63/0x86 >> [ 625.657376] __warn+0xcb/0xf0 >> [ 625.657377] warn_slowpath_fmt+0x5a/0x80 >> [ 625.657390] __btrfs_free_extent.isra.61+0x821/0xe40 [btrfs] >> [ 625.657401] ? btrfs_search_slot+0x429/0x9d0 [btrfs] >> [ 625.657416] ? btrfs_merge_delayed_refs+0x61/0x6c0 [btrfs] >> [ 625.657428] __btrfs_run_delayed_refs+0x501/0x12b0 [btrfs] >> [ 625.657443] ? btrfs_get_token_64+0x105/0x120 [btrfs] >> [ 625.657456] btrfs_run_delayed_refs+0x8f/0x2a0 [btrfs] >> [ 625.657473] ? free_extent_buffer+0x4b/0xa0 [btrfs] >> [ 625.657486] btrfs_should_end_transaction+0x48/0x60 [btrfs] >> [ 625.657498] btrfs_drop_snapshot+0x3e0/0x920 [btrfs] >> [ 625.657512] btrfs_clean_one_deleted_snapshot+0xbc/0x100 [btrfs] >> [ 625.657527] cleaner_kthread+0x133/0x180 [btrfs] >> [ 625.657529] kthread+0x109/0x140 >> [ 625.657542] ? __btree_submit_bio_start+0x20/0x20 [btrfs] >> [ 625.657543] ? kthread_park+0x90/0x90 >> [ 625.657545] ret_from_fork+0x2c/0x40 >> [ 625.657546] ---[ end trace 1c4d5dd9396052af ]--- >> [ 625.657548] BTRFS: error (device dm-1) in __btrfs_free_extent:6942: >> errno=-2 No such entry >> [ 625.657550] BTRFS info (device dm-1): forced readonly >> [ 625.657553] BTRFS: error (device dm-1) in >> btrfs_run_delayed_refs:2961: errno=-2 No such entry >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in >> the body of a message to majord...@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > I have exactly the same errors, also on 4.11 kernel, but RAID-1 with 4 disks. > And I can't fix it till two months. Yes, I'm quite a bit lazy and > didn't have much spare time)) > > Unfortunately, my last post in mailing list left unanswered: > https://www.spinics.net/lists/linux-btrfs/msg67681.html > > Seems like it's a common problem. > This answer on StackOverflow contains an output (in "btrfs check") > which is identical to one in my system: > https://unix.stackexchange.com/questions/369133/dealing-with-btrfs-ref-backpointer-mismatches-backref-missing/369275 > > Tomorrow I'll try to run "btrfs check" with 4.12 kernel and progs. > Maybe someone have a "success story"? > > > -- > Ivan Sizov -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html