Yes, I have qgroups enabled on that filesystem. I'll disable qgroups the next chance I get, they aren't worth the trouble.
After rebooting, BTRFS finished the balance. I then foolishly started a selective metadata balance, which never got past the first block group; it just thrashed the disk for several hours. It could not be canceled, so I rebooted. Then I mounted the filesystem with skip_balance and clear_cache. The mount failed. The relevant part of dmesg is attached. That looks pretty bad. Unfortunately, I don't have any backups of this filesystem, though before this I was planning to purchase some disks for that purpose.
[ 179.886215] BTRFS info (device sdh1): use zstd compression, level 0 [ 179.886221] BTRFS info (device sdh1): force clearing of disk cache [ 179.886223] BTRFS info (device sdh1): disk space caching is enabled [ 179.886226] BTRFS info (device sdh1): has skinny extents [ 203.177336] BTRFS error (device sdh1): qgroup generation mismatch, marked as inconsistent [ 292.661469] audit: type=1130 audit(1554400872.190:76): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=upower comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' [ 334.042797] WARNING: CPU: 0 PID: 4840 at fs/btrfs/extent-tree.c:7042 __btrfs_free_extent.isra.22+0x619/0x940 [btrfs] [ 334.042798] Modules linked in: cfg80211 xt_recent xt_tcpudp xt_state xt_conntrack nf_conntrack rfkill nf_defrag_ipv6 nf_defrag_ipv4 8021q garp iptable_filter mrp stp nct6775 llc hwmon_vid vmnet(OE) nls_iso8859_1 nls_cp437 vfat fat nvidia_drm(POE) nvidia_modeset(POE) snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel nvidia(POE) kvm irqbypass crct10dif_pclmul crc32_pclmul snd_usb_audio ghash_clmulni_intel drm_kms_helper snd_usbmidi_lib snd_hda_codec_realtek snd_rawmidi snd_seq_device joydev input_leds usblp snd_hda_codec_generic ledtrig_audio mousedev drm aesni_intel iTCO_wdt snd_hda_intel iTCO_vendor_support aes_x86_64 crypto_simd snd_hda_codec cryptd glue_helper intel_cstate snd_hda_core intel_uncore snd_hwdep agpgart snd_pcm intel_rapl_perf ipmi_devintf pcspkr intel_wmi_thunderbolt ipmi_msghandler snd_timer syscopyarea sysfillrect snd mei_me i2c_i801 mxm_wmi e1000e sysimgblt mei lpc_ich fb_sys_fops soundcore evdev mac_hid pcc_cpufreq fuse vmmon(OE) [ 334.042823] vmw_vmci vboxnetflt(OE) vboxnetadp(OE) vboxpci(OE) vboxdrv(OE) sg crypto_user ip_tables x_tables btrfs libcrc32c crc32c_generic xor uas usb_storage usbhid raid6_pq sd_mod ahci libahci libata xhci_pci scsi_mod crc32c_intel ehci_pci xhci_hcd ehci_hcd wmi hid_generic hid [ 334.042836] CPU: 0 PID: 4840 Comm: btrfs-transacti Tainted: P OE 5.0.5-arch1-1-ARCH #1 [ 334.042837] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X99 Extreme4, BIOS P3.80 04/06/2018 [ 334.042849] RIP: 0010:__btrfs_free_extent.isra.22+0x619/0x940 [btrfs] [ 334.042851] Code: b8 00 00 00 48 8b 7c 24 08 e8 d3 58 ff ff 41 89 c5 58 c6 44 24 2c 00 45 85 ed 0f 84 f7 fa ff ff 41 83 fd fe 0f 85 e6 fb ff ff <0f> 0b 49 8b 3c 24 e8 1c 76 00 00 49 89 d9 4d 89 f8 4c 89 f1 ff b4 [ 334.042851] RSP: 0018:ffffa6ae89a87bd8 EFLAGS: 00010246 [ 334.042853] RAX: 00000000fffffffe RBX: 0000000000000000 RCX: 0000000000000000 [ 334.042853] RDX: 00000000fffffffe RSI: 0000000000000000 RDI: ffff9591695f4000 [ 334.042854] RBP: 0000017e187a0000 R08: 0000000000000000 R09: 000000000000005e [ 334.042855] R10: 000000000000007c R11: 0000000000000000 R12: ffff959160b0db60 [ 334.042855] R13: 00000000fffffffe R14: 0000000000000000 R15: 0000000000000002 [ 334.042856] FS: 0000000000000000(0000) GS:ffff959407800000(0000) knlGS:0000000000000000 [ 334.042857] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 334.042858] CR2: 00001e0f362f8008 CR3: 00000005cca8a003 CR4: 00000000001606f0 [ 334.042859] Call Trace: [ 334.042873] ? block_rsv_release_bytes+0x9e/0x180 [btrfs] [ 334.042878] ? _raw_spin_lock+0x13/0x30 [ 334.042879] ? _raw_spin_unlock+0x16/0x30 [ 334.042894] ? btrfs_merge_delayed_refs+0x2e3/0x320 [btrfs] [ 334.042905] __btrfs_run_delayed_refs+0x6d7/0xf70 [btrfs] [ 334.042916] btrfs_run_delayed_refs+0x63/0x170 [btrfs] [ 334.042927] btrfs_start_dirty_block_groups+0x296/0x450 [btrfs] [ 334.042940] btrfs_commit_transaction+0xd2/0x8a0 [btrfs] [ 334.042953] ? start_transaction+0x9c/0x480 [btrfs] [ 334.042965] transaction_kthread+0x13c/0x160 [btrfs] [ 334.042977] ? btrfs_cleanup_transaction+0x570/0x570 [btrfs] [ 334.042979] kthread+0x112/0x130 [ 334.042981] ? kthread_park+0x80/0x80 [ 334.042982] ret_from_fork+0x35/0x40 [ 334.042984] ---[ end trace e4e7ece3df0f7c23 ]--- [ 334.042988] BTRFS info (device sdh1): leaf 1638947995648 gen 611285 total ptrs 131 free space 8658 owner 2 [ 334.042989] item 0 key (1641086091264 169 0) itemoff 16250 itemsize 33 [ 334.042990] extent refs 1 gen 481941 flags 258 [ 334.042990] ref#0: shared block backref parent 2216640692224 [ 334.042992] item 1 key (1641086107648 169 0) itemoff 16217 itemsize 33 [ 334.042992] extent refs 1 gen 608851 flags 2 [ 334.042993] ref#0: tree block backref root 7 [ 334.042994] item 2 key (1641086124032 169 0) itemoff 16184 itemsize 33 [ 334.042995] extent refs 1 gen 481941 flags 258 [ 334.042995] ref#0: shared block backref parent 2216640692224 [ 334.042996] item 3 key (1641086140416 169 0) itemoff 16151 itemsize 33 [ 334.042996] extent refs 1 gen 482879 flags 2 [ 334.042997] ref#0: shared block backref parent 1641208643584 [ 334.042998] item 4 key (1641086156800 169 0) itemoff 16118 itemsize 33 [ 334.042998] extent refs 1 gen 483863 flags 2 [ 334.042999] ref#0: tree block backref root 7 [ 334.043000] item 5 key (1641086173184 169 0) itemoff 16085 itemsize 33 [ 334.043000] extent refs 1 gen 483863 flags 2 [ 334.043000] ref#0: tree block backref root 7 [ 334.043001] item 6 key (1641086189568 169 0) itemoff 16052 itemsize 33 [ 334.043002] extent refs 1 gen 608851 flags 2 [ 334.043002] ref#0: tree block backref root 7 [ 334.043003] item 7 key (1641086205952 169 0) itemoff 16019 itemsize 33 [ 334.043004] extent refs 1 gen 608851 flags 2 [ 334.043004] ref#0: tree block backref root 7 [ 334.043005] item 8 key (1641086222336 169 0) itemoff 15986 itemsize 33 [ 334.043006] extent refs 1 gen 611281 flags 2 [ 334.043006] ref#0: tree block backref root 2 [ 334.043007] item 9 key (1641086238720 169 0) itemoff 15953 itemsize 33 [ 334.043007] extent refs 1 gen 611177 flags 2 [ 334.043008] ref#0: tree block backref root 2 [ 334.043009] item 10 key (1641086255104 169 0) itemoff 15920 itemsize 33 [ 334.043009] extent refs 1 gen 482486 flags 2 [ 334.043010] ref#0: shared block backref parent 2292648886272 [ 334.043011] item 11 key (1641086271488 169 0) itemoff 15887 itemsize 33 [ 334.043011] extent refs 1 gen 482879 flags 2 [ 334.043011] ref#0: shared block backref parent 1641208643584 [ 334.043012] item 12 key (1641086287872 169 0) itemoff 15854 itemsize 33 [ 334.043013] extent refs 1 gen 481941 flags 258 [ 334.043013] ref#0: shared block backref parent 2216640692224 [ 334.043014] item 13 key (1641086304256 169 0) itemoff 15821 itemsize 33 [ 334.043015] extent refs 1 gen 482879 flags 2 [ 334.043015] ref#0: shared block backref parent 1641208643584 [ 334.043016] item 14 key (1641086320640 169 0) itemoff 15788 itemsize 33 [ 334.043017] extent refs 1 gen 608279 flags 2 [ 334.043017] ref#0: tree block backref root 5 [ 334.043018] item 15 key (1641086337024 169 0) itemoff 15755 itemsize 33 [ 334.043019] extent refs 1 gen 608851 flags 2 [ 334.043019] ref#0: tree block backref root 7 [ 334.043020] item 16 key (1641086353408 169 0) itemoff 15722 itemsize 33 [ 334.043020] extent refs 1 gen 481941 flags 258 [ 334.043021] ref#0: shared block backref parent 2216640692224 [ 334.043022] item 17 key (1641086369792 169 0) itemoff 15689 itemsize 33 [ 334.043022] extent refs 1 gen 481893 flags 258 [ 334.043023] ref#0: shared block backref parent 1643449057280 [ 334.043024] item 18 key (1641086386176 169 0) itemoff 15656 itemsize 33 [ 334.043024] extent refs 1 gen 509478 flags 2 [ 334.043025] ref#0: shared block backref parent 2214173376512 [ 334.043026] item 19 key (1641086402560 169 0) itemoff 15614 itemsize 42 [ 334.043026] extent refs 2 gen 529045 flags 258 [ 334.043026] ref#0: shared block backref parent 2734784987136 [ 334.043027] ref#1: shared block backref parent 1639255343104 [ 334.043028] item 20 key (1641086418944 169 0) itemoff 15581 itemsize 33 [ 334.043029] extent refs 1 gen 611195 flags 2 [ 334.043029] ref#0: tree block backref root 2 [ 334.043030] item 21 key (1641086435328 169 0) itemoff 15548 itemsize 33 [ 334.043030] extent refs 1 gen 611279 flags 2 [ 334.043031] ref#0: tree block backref root 2 [ 334.043032] item 22 key (1641086451712 169 0) itemoff 15515 itemsize 33 [ 334.043032] extent refs 1 gen 482879 flags 2 [ 334.043033] ref#0: shared block backref parent 1641208643584 [ 334.043034] item 23 key (1641086468096 169 0) itemoff 15482 itemsize 33 [ 334.043034] extent refs 1 gen 481941 flags 258 [ 334.043034] ref#0: shared block backref parent 2216640692224 [ 334.043035] item 24 key (1641086484480 169 0) itemoff 15449 itemsize 33 [ 334.043036] extent refs 1 gen 535078 flags 258 [ 334.043036] ref#0: tree block backref root 1745 [ 334.043037] item 25 key (1641086500864 169 0) itemoff 15416 itemsize 33 [ 334.043038] extent refs 1 gen 481941 flags 258 [ 334.043038] ref#0: shared block backref parent 2216640692224 [ 334.043039] item 26 key (1641086517248 169 0) itemoff 15383 itemsize 33 [ 334.043040] extent refs 1 gen 481941 flags 258 [ 334.043040] ref#0: shared block backref parent 2216640692224 [ 334.043041] item 27 key (1641086533632 169 0) itemoff 15350 itemsize 33 [ 334.043042] extent refs 1 gen 481893 flags 258 [ 334.043042] ref#0: shared block backref parent 2296782225408 [ 334.043043] item 28 key (1641086550016 169 0) itemoff 15317 itemsize 33 [ 334.043044] extent refs 1 gen 506997 flags 258 [ 334.043044] ref#0: shared block backref parent 1639494828032 [ 334.043045] item 29 key (1641086566400 169 0) itemoff 15284 itemsize 33 [ 334.043045] extent refs 1 gen 591019 flags 2 [ 334.043046] ref#0: tree block backref root 1745 [ 334.043047] item 30 key (1641086582784 169 0) itemoff 15251 itemsize 33 [ 334.043047] extent refs 1 gen 481941 flags 258 [ 334.043048] ref#0: shared block backref parent 2216640692224 [ 334.043049] item 31 key (1641086599168 169 0) itemoff 15218 itemsize 33 [ 334.043049] extent refs 1 gen 608851 flags 2 [ 334.043049] ref#0: tree block backref root 7 [ 334.043050] item 32 key (1641086615552 169 0) itemoff 15185 itemsize 33 [ 334.043051] extent refs 1 gen 608851 flags 2 [ 334.043051] ref#0: tree block backref root 7 [ 334.043052] item 33 key (1641086631936 169 0) itemoff 15152 itemsize 33 [ 334.043053] extent refs 1 gen 481941 flags 258 [ 334.043053] ref#0: shared block backref parent 2216640692224 [ 334.043054] item 34 key (1641086648320 169 0) itemoff 15119 itemsize 33 [ 334.043055] extent refs 1 gen 481941 flags 258 [ 334.043055] ref#0: shared block backref parent 2216640692224 [ 334.043056] item 35 key (1641086664704 169 0) itemoff 15086 itemsize 33 [ 334.043057] extent refs 1 gen 481941 flags 258 [ 334.043057] ref#0: shared block backref parent 2216640692224 [ 334.043058] item 36 key (1641086681088 169 0) itemoff 15053 itemsize 33 [ 334.043059] extent refs 1 gen 481941 flags 258 [ 334.043059] ref#0: shared block backref parent 2216640692224 [ 334.043060] item 37 key (1641086697472 169 0) itemoff 15020 itemsize 33 [ 334.043061] extent refs 1 gen 602194 flags 2 [ 334.043061] ref#0: shared block backref parent 2629508644864 [ 334.043062] item 38 key (1641086713856 169 0) itemoff 14987 itemsize 33 [ 334.043063] extent refs 1 gen 602194 flags 2 [ 334.043063] ref#0: shared block backref parent 2629508644864 [ 334.043065] item 39 key (1641086730240 169 0) itemoff 14954 itemsize 33 [ 334.043065] extent refs 1 gen 481941 flags 258 [ 334.043066] ref#0: shared block backref parent 2629714460672 [ 334.043067] item 40 key (1641086746624 169 0) itemoff 14921 itemsize 33 [ 334.043067] extent refs 1 gen 484047 flags 2 [ 334.043067] ref#0: shared block backref parent 1641750921216 [ 334.043069] item 41 key (1641086763008 169 0) itemoff 14888 itemsize 33 [ 334.043069] extent refs 1 gen 602194 flags 2 [ 334.043070] ref#0: shared block backref parent 2629508644864 [ 334.043071] item 42 key (1641086779392 169 0) itemoff 14855 itemsize 33 [ 334.043072] extent refs 1 gen 608851 flags 2 [ 334.043072] ref#0: tree block backref root 7 [ 334.043073] item 43 key (1641086795776 169 0) itemoff 14822 itemsize 33 [ 334.043073] extent refs 1 gen 481941 flags 258 [ 334.043074] ref#0: shared block backref parent 2216640692224 [ 334.043075] item 44 key (1641086812160 169 0) itemoff 14789 itemsize 33 [ 334.043075] extent refs 1 gen 589404 flags 2 [ 334.043076] ref#0: tree block backref root 1745 [ 334.043077] item 45 key (1641086828544 169 0) itemoff 14756 itemsize 33 [ 334.043077] extent refs 1 gen 481893 flags 258 [ 334.043078] ref#0: shared block backref parent 1643449057280 [ 334.043079] item 46 key (1641086844928 169 0) itemoff 14723 itemsize 33 [ 334.043079] extent refs 1 gen 506997 flags 258 [ 334.043080] ref#0: shared block backref parent 2217352019968 [ 334.043081] item 47 key (1641086861312 169 0) itemoff 14690 itemsize 33 [ 334.043081] extent refs 1 gen 514558 flags 2 [ 334.043081] ref#0: shared block backref parent 2021187092480 [ 334.043082] item 48 key (1641086877696 169 0) itemoff 14657 itemsize 33 [ 334.043083] extent refs 1 gen 489578 flags 2 [ 334.043083] ref#0: shared block backref parent 1790897307648 [ 334.043084] item 49 key (1641086894080 169 0) itemoff 14624 itemsize 33 [ 334.043085] extent refs 1 gen 608851 flags 2 [ 334.043085] ref#0: tree block backref root 7 [ 334.043086] item 50 key (1641086910464 169 0) itemoff 14591 itemsize 33 [ 334.043087] extent refs 1 gen 481941 flags 258 [ 334.043087] ref#0: shared block backref parent 2216640692224 [ 334.043088] item 51 key (1641086926848 169 0) itemoff 14558 itemsize 33 [ 334.043089] extent refs 1 gen 608851 flags 2 [ 334.043089] ref#0: tree block backref root 7 [ 334.043090] item 52 key (1641086943232 169 0) itemoff 14525 itemsize 33 [ 334.043090] extent refs 1 gen 600726 flags 2 [ 334.043091] ref#0: tree block backref root 2 [ 334.043092] item 53 key (1641086959616 169 0) itemoff 14492 itemsize 33 [ 334.043092] extent refs 1 gen 602194 flags 2 [ 334.043093] ref#0: shared block backref parent 2629508644864 [ 334.043094] item 54 key (1641086976000 169 0) itemoff 14459 itemsize 33 [ 334.043094] extent refs 1 gen 483783 flags 2 [ 334.043094] ref#0: shared block backref parent 1790498488320 [ 334.043095] item 55 key (1641086992384 169 0) itemoff 14426 itemsize 33 [ 334.043096] extent refs 1 gen 602194 flags 2 [ 334.043096] ref#0: shared block backref parent 2629508644864 [ 334.043097] item 56 key (1641087008768 169 0) itemoff 14393 itemsize 33 [ 334.043098] extent refs 1 gen 608851 flags 2 [ 334.043098] ref#0: tree block backref root 7 [ 334.043099] item 57 key (1641087025152 169 0) itemoff 14360 itemsize 33 [ 334.043100] extent refs 1 gen 483783 flags 2 [ 334.043100] ref#0: shared block backref parent 1790498488320 [ 334.043101] item 58 key (1641087041536 169 0) itemoff 14327 itemsize 33 [ 334.043102] extent refs 1 gen 481941 flags 258 [ 334.043103] ref#0: shared block backref parent 2216640692224 [ 334.043104] item 59 key (1641087057920 169 0) itemoff 14294 itemsize 33 [ 334.043105] extent refs 1 gen 481941 flags 258 [ 334.043105] ref#0: shared block backref parent 2216640692224 [ 334.043107] item 60 key (1641087074304 169 0) itemoff 14261 itemsize 33 [ 334.043107] extent refs 1 gen 591923 flags 2 [ 334.043108] ref#0: shared block backref parent 1641553494016 [ 334.043109] item 61 key (1641087107072 169 0) itemoff 14228 itemsize 33 [ 334.043110] extent refs 1 gen 608851 flags 2 [ 334.043110] ref#0: tree block backref root 7 [ 334.043112] item 62 key (1641087123456 169 0) itemoff 14195 itemsize 33 [ 334.043113] extent refs 1 gen 481941 flags 258 [ 334.043113] ref#0: shared block backref parent 2216640692224 [ 334.043115] item 63 key (1641087139840 169 0) itemoff 14162 itemsize 33 [ 334.043115] extent refs 1 gen 481893 flags 2 [ 334.043116] ref#0: tree block backref root 7 [ 334.043117] item 64 key (1641087156224 169 0) itemoff 14129 itemsize 33 [ 334.043117] extent refs 1 gen 481893 flags 258 [ 334.043118] ref#0: shared block backref parent 1643449057280 [ 334.043119] item 65 key (1641087172608 169 0) itemoff 14096 itemsize 33 [ 334.043119] extent refs 1 gen 481893 flags 258 [ 334.043119] ref#0: shared block backref parent 2555152531456 [ 334.043120] item 66 key (1641087188992 169 0) itemoff 14063 itemsize 33 [ 334.043121] extent refs 1 gen 533251 flags 258 [ 334.043121] ref#0: shared block backref parent 1943316512768 [ 334.043122] item 67 key (1641087205376 169 0) itemoff 14030 itemsize 33 [ 334.043123] extent refs 1 gen 483783 flags 2 [ 334.043123] ref#0: shared block backref parent 1790498488320 [ 334.043124] item 68 key (1641087221760 169 0) itemoff 13997 itemsize 33 [ 334.043125] extent refs 1 gen 482486 flags 2 [ 334.043125] ref#0: tree block backref root 1745 [ 334.043126] item 69 key (1641087238144 169 0) itemoff 13964 itemsize 33 [ 334.043127] extent refs 1 gen 608851 flags 2 [ 334.043127] ref#0: tree block backref root 7 [ 334.043128] item 70 key (1641087254528 169 0) itemoff 13931 itemsize 33 [ 334.043128] extent refs 1 gen 608851 flags 2 [ 334.043129] ref#0: tree block backref root 7 [ 334.043130] item 71 key (1641087270912 169 0) itemoff 13898 itemsize 33 [ 334.043130] extent refs 1 gen 608851 flags 2 [ 334.043131] ref#0: tree block backref root 7 [ 334.043132] item 72 key (1641087287296 169 0) itemoff 13865 itemsize 33 [ 334.043132] extent refs 1 gen 608851 flags 2 [ 334.043132] ref#0: tree block backref root 7 [ 334.043133] item 73 key (1641087303680 169 0) itemoff 13832 itemsize 33 [ 334.043134] extent refs 1 gen 481941 flags 258 [ 334.043134] ref#0: shared block backref parent 2216640692224 [ 334.043135] item 74 key (1641087320064 169 0) itemoff 13799 itemsize 33 [ 334.043136] extent refs 1 gen 608851 flags 2 [ 334.043136] ref#0: tree block backref root 7 [ 334.043137] item 75 key (1641087336448 169 0) itemoff 13766 itemsize 33 [ 334.043138] extent refs 1 gen 481893 flags 258 [ 334.043138] ref#0: shared block backref parent 1643449057280 [ 334.043139] item 76 key (1641087352832 169 0) itemoff 13733 itemsize 33 [ 334.043140] extent refs 1 gen 608851 flags 2 [ 334.043140] ref#0: tree block backref root 7 [ 334.043141] item 77 key (1641087385600 169 0) itemoff 13700 itemsize 33 [ 334.043141] extent refs 1 gen 611177 flags 2 [ 334.043142] ref#0: tree block backref root 2 [ 334.043143] item 78 key (1641087401984 169 0) itemoff 13667 itemsize 33 [ 334.043143] extent refs 1 gen 608851 flags 2 [ 334.043144] ref#0: tree block backref root 7 [ 334.043145] item 79 key (1641087418368 169 0) itemoff 13634 itemsize 33 [ 334.043145] extent refs 1 gen 608851 flags 2 [ 334.043145] ref#0: tree block backref root 7 [ 334.043146] item 80 key (1641087434752 169 0) itemoff 13601 itemsize 33 [ 334.043147] extent refs 1 gen 608851 flags 2 [ 334.043147] ref#0: tree block backref root 7 [ 334.043148] item 81 key (1641087451136 169 0) itemoff 13568 itemsize 33 [ 334.043149] extent refs 1 gen 482486 flags 2 [ 334.043149] ref#0: tree block backref root 1745 [ 334.043150] item 82 key (1641087467520 169 0) itemoff 13535 itemsize 33 [ 334.043151] extent refs 1 gen 481941 flags 258 [ 334.043151] ref#0: shared block backref parent 2216640692224 [ 334.043152] item 83 key (1641087483904 169 0) itemoff 13502 itemsize 33 [ 334.043153] extent refs 1 gen 481941 flags 258 [ 334.043153] ref#0: shared block backref parent 2216640692224 [ 334.043154] item 84 key (1641087500288 169 0) itemoff 13469 itemsize 33 [ 334.043155] extent refs 1 gen 608851 flags 2 [ 334.043155] ref#0: tree block backref root 7 [ 334.043156] item 85 key (1641087516672 169 0) itemoff 13436 itemsize 33 [ 334.043157] extent refs 1 gen 611195 flags 2 [ 334.043157] ref#0: tree block backref root 2 [ 334.043158] item 86 key (1641087533056 169 0) itemoff 13403 itemsize 33 [ 334.043159] extent refs 1 gen 482486 flags 2 [ 334.043159] ref#0: tree block backref root 1745 [ 334.043160] item 87 key (1641087549440 169 0) itemoff 13370 itemsize 33 [ 334.043161] extent refs 1 gen 611177 flags 2 [ 334.043161] ref#0: tree block backref root 2 [ 334.043162] item 88 key (1641087565824 169 0) itemoff 13337 itemsize 33 [ 334.043162] extent refs 1 gen 600359 flags 2 [ 334.043163] ref#0: shared block backref parent 2555776614400 [ 334.043164] item 89 key (1641087582208 169 0) itemoff 13295 itemsize 42 [ 334.043164] extent refs 2 gen 514106 flags 258 [ 334.043165] ref#0: shared block backref parent 1942948462592 [ 334.043165] ref#1: shared block backref parent 1645435437056 [ 334.043166] item 90 key (1641087598592 169 0) itemoff 13262 itemsize 33 [ 334.043167] extent refs 1 gen 481941 flags 258 [ 334.043167] ref#0: shared block backref parent 2216640692224 [ 334.043168] item 91 key (1641087614976 169 0) itemoff 13229 itemsize 33 [ 334.043169] extent refs 1 gen 481941 flags 258 [ 334.043169] ref#0: shared block backref parent 2216640692224 [ 334.043170] item 92 key (1641087631360 169 0) itemoff 13196 itemsize 33 [ 334.043171] extent refs 1 gen 481941 flags 258 [ 334.043171] ref#0: shared block backref parent 2216640692224 [ 334.043172] item 93 key (1641087647744 169 0) itemoff 13163 itemsize 33 [ 334.043173] extent refs 1 gen 481941 flags 258 [ 334.043173] ref#0: shared block backref parent 2216640692224 [ 334.043174] item 94 key (1641087664128 169 0) itemoff 13130 itemsize 33 [ 334.043175] extent refs 1 gen 481941 flags 2 [ 334.043175] ref#0: tree block backref root 7 [ 334.043176] item 95 key (1641087680512 169 0) itemoff 13097 itemsize 33 [ 334.043177] extent refs 1 gen 481941 flags 258 [ 334.043177] ref#0: shared block backref parent 2216640692224 [ 334.043178] item 96 key (1641087696896 169 0) itemoff 13064 itemsize 33 [ 334.043179] extent refs 1 gen 482486 flags 2 [ 334.043179] ref#0: tree block backref root 1745 [ 334.043180] item 97 key (1641087713280 169 0) itemoff 13031 itemsize 33 [ 334.043181] extent refs 1 gen 590652 flags 2 [ 334.043181] ref#0: shared block backref parent 2608253943808 [ 334.043182] item 98 key (1641087729664 169 0) itemoff 12998 itemsize 33 [ 334.043183] extent refs 1 gen 481941 flags 2 [ 334.043183] ref#0: tree block backref root 7 [ 334.043184] item 99 key (1641087746048 169 0) itemoff 12965 itemsize 33 [ 334.043185] extent refs 1 gen 481941 flags 2 [ 334.043185] ref#0: tree block backref root 7 [ 334.043186] item 100 key (1641087762432 169 0) itemoff 12923 itemsize 42 [ 334.043187] extent refs 2 gen 608851 flags 2 [ 334.043187] ref#0: shared block backref parent 2734328578048 [ 334.043188] ref#1: shared block backref parent 2612378845184 [ 334.043189] item 101 key (1641087778816 169 0) itemoff 12890 itemsize 33 [ 334.043190] extent refs 1 gen 481941 flags 2 [ 334.043190] ref#0: tree block backref root 7 [ 334.043191] item 102 key (1641087795200 169 0) itemoff 12857 itemsize 33 [ 334.043192] extent refs 1 gen 481941 flags 2 [ 334.043192] ref#0: tree block backref root 7 [ 334.043193] item 103 key (1641087811584 169 0) itemoff 12824 itemsize 33 [ 334.043194] extent refs 1 gen 481941 flags 258 [ 334.043194] ref#0: shared block backref parent 2216640692224 [ 334.043196] item 104 key (1641087827968 169 0) itemoff 12791 itemsize 33 [ 334.043197] extent refs 1 gen 611177 flags 2 [ 334.043197] ref#0: tree block backref root 2 [ 334.043198] item 105 key (1641087844352 169 0) itemoff 12758 itemsize 33 [ 334.043199] extent refs 1 gen 481941 flags 258 [ 334.043199] ref#0: shared block backref parent 2216640692224 [ 334.043200] item 106 key (1641087860736 169 0) itemoff 12725 itemsize 33 [ 334.043201] extent refs 1 gen 481941 flags 258 [ 334.043201] ref#0: shared block backref parent 2216640692224 [ 334.043202] item 107 key (1641087877120 169 0) itemoff 12692 itemsize 33 [ 334.043203] extent refs 1 gen 481941 flags 258 [ 334.043203] ref#0: shared block backref parent 2216640692224 [ 334.043204] item 108 key (1641087893504 169 0) itemoff 12659 itemsize 33 [ 334.043205] extent refs 1 gen 481941 flags 258 [ 334.043205] ref#0: shared block backref parent 2216640692224 [ 334.043206] item 109 key (1641087909888 169 0) itemoff 12626 itemsize 33 [ 334.043207] extent refs 1 gen 483077 flags 2 [ 334.043207] ref#0: shared block backref parent 2292688109568 [ 334.043208] item 110 key (1641087926272 169 0) itemoff 12593 itemsize 33 [ 334.043208] extent refs 1 gen 481941 flags 258 [ 334.043209] ref#0: shared block backref parent 2216640692224 [ 334.043210] item 111 key (1641087942656 169 0) itemoff 12560 itemsize 33 [ 334.043210] extent refs 1 gen 611281 flags 2 [ 334.043211] ref#0: tree block backref root 2 [ 334.043212] item 112 key (1641087959040 169 0) itemoff 12527 itemsize 33 [ 334.043212] extent refs 1 gen 611281 flags 2 [ 334.043212] ref#0: tree block backref root 2 [ 334.043214] item 113 key (1641087975424 169 0) itemoff 12494 itemsize 33 [ 334.043214] extent refs 1 gen 481941 flags 258 [ 334.043214] ref#0: shared block backref parent 2216640692224 [ 334.043215] item 114 key (1641087991808 169 0) itemoff 12461 itemsize 33 [ 334.043216] extent refs 1 gen 481941 flags 258 [ 334.043216] ref#0: shared block backref parent 2216640692224 [ 334.043217] item 115 key (1641088008192 169 0) itemoff 12428 itemsize 33 [ 334.043218] extent refs 1 gen 484047 flags 2 [ 334.043218] ref#0: shared block backref parent 1641750921216 [ 334.043219] item 116 key (1641088024576 169 0) itemoff 12395 itemsize 33 [ 334.043220] extent refs 1 gen 481941 flags 258 [ 334.043220] ref#0: shared block backref parent 2216640692224 [ 334.043221] item 117 key (1641088040960 169 0) itemoff 12362 itemsize 33 [ 334.043222] extent refs 1 gen 483018 flags 2 [ 334.043222] ref#0: shared block backref parent 2629048860672 [ 334.043223] item 118 key (1641088057344 169 0) itemoff 12329 itemsize 33 [ 334.043224] extent refs 1 gen 482486 flags 2 [ 334.043224] ref#0: tree block backref root 1745 [ 334.043225] item 119 key (1641088073728 169 0) itemoff 12296 itemsize 33 [ 334.043226] extent refs 1 gen 481941 flags 258 [ 334.043226] ref#0: shared block backref parent 2216640692224 [ 334.043227] item 120 key (1641088090112 169 0) itemoff 12263 itemsize 33 [ 334.043228] extent refs 1 gen 481941 flags 258 [ 334.043228] ref#0: shared block backref parent 2216640692224 [ 334.043229] item 121 key (1641088106496 169 0) itemoff 12230 itemsize 33 [ 334.043230] extent refs 1 gen 482486 flags 2 [ 334.043230] ref#0: tree block backref root 1745 [ 334.043231] item 122 key (1641088122880 169 0) itemoff 12197 itemsize 33 [ 334.043232] extent refs 1 gen 611177 flags 2 [ 334.043232] ref#0: tree block backref root 2 [ 334.043233] item 123 key (1641088139264 169 0) itemoff 12164 itemsize 33 [ 334.043234] extent refs 1 gen 535078 flags 258 [ 334.043234] ref#0: shared block backref parent 2607855501312 [ 334.043236] item 124 key (1641088172032 169 0) itemoff 12131 itemsize 33 [ 334.043236] extent refs 1 gen 484146 flags 2 [ 334.043236] ref#0: tree block backref root 7 [ 334.043238] item 125 key (1641088188416 169 0) itemoff 12098 itemsize 33 [ 334.043238] extent refs 1 gen 503221 flags 2 [ 334.043238] ref#0: tree block backref root 7 [ 334.043240] item 126 key (1641088204800 169 0) itemoff 12065 itemsize 33 [ 334.043240] extent refs 1 gen 481941 flags 258 [ 334.043241] ref#0: shared block backref parent 2216640692224 [ 334.043242] item 127 key (1641088221184 169 0) itemoff 12032 itemsize 33 [ 334.043242] extent refs 1 gen 481941 flags 258 [ 334.043242] ref#0: shared block backref parent 1641023389696 [ 334.043243] item 128 key (1641088237568 169 0) itemoff 11999 itemsize 33 [ 334.043244] extent refs 1 gen 481941 flags 258 [ 334.043244] ref#0: shared block backref parent 2216640692224 [ 334.043245] item 129 key (1641088253952 169 0) itemoff 11966 itemsize 33 [ 334.043246] extent refs 1 gen 481941 flags 258 [ 334.043246] ref#0: shared block backref parent 2216640692224 [ 334.043247] item 130 key (1641088270336 169 0) itemoff 11933 itemsize 33 [ 334.043248] extent refs 1 gen 481941 flags 258 [ 334.043248] ref#0: shared block backref parent 1645426163712 [ 334.043250] BTRFS error (device sdh1): unable to find ref byte nr 1641088155648 parent 0 root 2 owner 0 offset 0 [ 334.043252] ------------[ cut here ]------------ [ 334.043253] BTRFS: Transaction aborted (error -2) [ 334.043278] WARNING: CPU: 0 PID: 4840 at fs/btrfs/extent-tree.c:7048 __btrfs_free_extent.isra.22+0x676/0x940 [btrfs] [ 334.043278] Modules linked in: cfg80211 xt_recent xt_tcpudp xt_state xt_conntrack nf_conntrack rfkill nf_defrag_ipv6 nf_defrag_ipv4 8021q garp iptable_filter mrp stp nct6775 llc hwmon_vid vmnet(OE) nls_iso8859_1 nls_cp437 vfat fat nvidia_drm(POE) nvidia_modeset(POE) snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel nvidia(POE) kvm irqbypass crct10dif_pclmul crc32_pclmul snd_usb_audio ghash_clmulni_intel drm_kms_helper snd_usbmidi_lib snd_hda_codec_realtek snd_rawmidi snd_seq_device joydev input_leds usblp snd_hda_codec_generic ledtrig_audio mousedev drm aesni_intel iTCO_wdt snd_hda_intel iTCO_vendor_support aes_x86_64 crypto_simd snd_hda_codec cryptd glue_helper intel_cstate snd_hda_core intel_uncore snd_hwdep agpgart snd_pcm intel_rapl_perf ipmi_devintf pcspkr intel_wmi_thunderbolt ipmi_msghandler snd_timer syscopyarea sysfillrect snd mei_me i2c_i801 mxm_wmi e1000e sysimgblt mei lpc_ich fb_sys_fops soundcore evdev mac_hid pcc_cpufreq fuse vmmon(OE) [ 334.043295] vmw_vmci vboxnetflt(OE) vboxnetadp(OE) vboxpci(OE) vboxdrv(OE) sg crypto_user ip_tables x_tables btrfs libcrc32c crc32c_generic xor uas usb_storage usbhid raid6_pq sd_mod ahci libahci libata xhci_pci scsi_mod crc32c_intel ehci_pci xhci_hcd ehci_hcd wmi hid_generic hid [ 334.043303] CPU: 0 PID: 4840 Comm: btrfs-transacti Tainted: P W OE 5.0.5-arch1-1-ARCH #1 [ 334.043303] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X99 Extreme4, BIOS P3.80 04/06/2018 [ 334.043316] RIP: 0010:__btrfs_free_extent.isra.22+0x676/0x940 [btrfs] [ 334.043317] Code: 08 48 8b 40 50 f0 48 0f ba a8 b8 12 00 00 02 0f 92 c0 5f 84 c0 0f 85 c7 9a 09 00 44 89 ee 48 c7 c7 00 b3 6a c0 e8 f4 ab 88 fb <0f> 0b e9 b1 9a 09 00 4c 89 e7 e8 db ba fe ff 48 8b 3c 24 4d 89 f8 [ 334.043318] RSP: 0018:ffffa6ae89a87bd8 EFLAGS: 00010286 [ 334.043319] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 334.043319] RDX: 0000000000000007 RSI: ffffffffbceaaa08 RDI: 00000000ffffffff [ 334.043320] RBP: 0000017e187a0000 R08: 0000000000000001 R09: 00000000000006d8 [ 334.043321] R10: 0000000000000004 R11: 0000000000000000 R12: ffff959160b0db60 [ 334.043321] R13: 00000000fffffffe R14: 0000000000000000 R15: 0000000000000002 [ 334.043322] FS: 0000000000000000(0000) GS:ffff959407800000(0000) knlGS:0000000000000000 [ 334.043323] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 334.043324] CR2: 00001e0f362f8008 CR3: 00000005cca8a003 CR4: 00000000001606f0 [ 334.043324] Call Trace: [ 334.043336] ? block_rsv_release_bytes+0x9e/0x180 [btrfs] [ 334.043338] ? _raw_spin_lock+0x13/0x30 [ 334.043340] ? _raw_spin_unlock+0x16/0x30 [ 334.043355] ? btrfs_merge_delayed_refs+0x2e3/0x320 [btrfs] [ 334.043367] __btrfs_run_delayed_refs+0x6d7/0xf70 [btrfs] [ 334.043379] btrfs_run_delayed_refs+0x63/0x170 [btrfs] [ 334.043391] btrfs_start_dirty_block_groups+0x296/0x450 [btrfs] [ 334.043405] btrfs_commit_transaction+0xd2/0x8a0 [btrfs] [ 334.043419] ? start_transaction+0x9c/0x480 [btrfs] [ 334.043432] transaction_kthread+0x13c/0x160 [btrfs] [ 334.043445] ? btrfs_cleanup_transaction+0x570/0x570 [btrfs] [ 334.043447] kthread+0x112/0x130 [ 334.043448] ? kthread_park+0x80/0x80 [ 334.043450] ret_from_fork+0x35/0x40 [ 334.043451] ---[ end trace e4e7ece3df0f7c24 ]--- [ 334.043453] BTRFS: error (device sdh1) in __btrfs_free_extent:7048: errno=-2 No such entry [ 334.043456] BTRFS: error (device sdh1) in btrfs_run_delayed_refs:3011: errno=-2 No such entry [ 343.689840] BTRFS: error (device sdh1) in btrfs_drop_snapshot:9470: errno=-30 Readonly filesystem [ 343.689847] BTRFS: error (device sdh1) in merge_reloc_roots:2429: errno=-30 Readonly filesystem [ 343.689855] BTRFS warning (device sdh1): failed to recover relocation: -30
