I have a defect disk which produced kernel backtraces like (see below). Are you interested in them, what else do you need to know, do you prefer things inline or as attachments?
unmodified Linux 4.3 tainted with nvidia driver disk:WDC WD2002FYPS-02W3B0 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 3 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 2 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 1 I mounted the disk normally (no RAID) and copied files from it. I know I should have mounted readonly ... Meanwhile the disk data is really corrupt, even after having it cool down overnight. btrfs check -sX fails for X in 0..5. So since mounting is no longer possible, I cannot produce new call traces. smartctl still says PASSED. The data loss is no problem. Dec 4 08:48:08 s5 kernel: [ 114.814022] ata5.00: irq_stat 0x40000008 Dec 4 08:48:08 s5 kernel: [ 114.814024] ata5.00: failed command: READ FPDMA QUEUED Dec 4 08:48:08 s5 kernel: [ 114.814028] ata5.00: cmd 60/08:60:07:8e:03/00:00:00:00:00/40 tag 12 ncq 4096 in Dec 4 08:48:08 s5 kernel: [ 114.814028] res 41/40:00:0e:8e:03/00:00:00:00:00/40 Emask 0x409 (media error) <F> Dec 4 08:48:08 s5 kernel: [ 114.814029] ata5.00: status: { DRDY ERR } Dec 4 08:48:08 s5 kernel: [ 114.814030] ata5.00: error: { UNC } Dec 4 08:48:08 s5 kernel: [ 114.822313] ata5.00: configured for UDMA/133 Dec 4 08:48:08 s5 kernel: [ 114.822322] sd 4:0:0:0: [sde] tag#12 UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08 Dec 4 08:48:08 s5 kernel: [ 114.822324] sd 4:0:0:0: [sde] tag#12 Sense Key : 0x3 [current] [descriptor] Dec 4 08:48:08 s5 kernel: [ 114.822326] sd 4:0:0:0: [sde] tag#12 ASC=0x11 ASCQ=0x4 Dec 4 08:48:08 s5 kernel: [ 114.822328] sd 4:0:0:0: [sde] tag#12 CDB: opcode=0x28 28 00 00 03 8e 07 00 00 08 00 Dec 4 08:48:08 s5 kernel: [ 114.822329] blk_update_request: I/O error, dev sde, sector 232974 Dec 4 08:48:08 s5 kernel: [ 114.822340] ata5: EH complete Dec 4 08:48:08 s5 kernel: [ 114.822360] BTRFS: failed to read tree root on sde1 And this is one of the six backtrace I got: (BTW all six are diffent) Dec 3 11:39:45 s5 kernel: [ 8393.928639] ata5: link is slow to respond, please be patient (ready=0) Dec 3 11:39:46 s5 kernel: [ 8395.160246] ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 3 11:39:46 s5 kernel: [ 8395.164216] ata5.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded Dec 3 11:39:46 s5 kernel: [ 8395.164219] ata5.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out Dec 3 11:39:46 s5 kernel: [ 8395.164220] ata5.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out Dec 3 11:39:46 s5 kernel: [ 8395.185378] ata5.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded Dec 3 11:39:46 s5 kernel: [ 8395.185381] ata5.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out Dec 3 11:39:46 s5 kernel: [ 8395.185383] ata5.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out Dec 3 11:39:46 s5 kernel: [ 8395.190195] ata5.00: configured for UDMA/133 Dec 3 11:39:46 s5 kernel: [ 8395.204218] ata5: EH complete Dec 3 11:39:57 s5 kernel: [ 8406.044742] ata5.00: exception Emask 0x50 SAct 0x0 SErr 0x4090800 action 0xe frozen Dec 3 11:39:57 s5 kernel: [ 8406.044746] ata5.00: irq_stat 0x00400040, connection status changed Dec 3 11:39:57 s5 kernel: [ 8406.044747] ata5: SError: { HostInt PHYRdyChg 10B8B DevExch } Dec 3 11:39:57 s5 kernel: [ 8406.044749] ata5.00: failed command: FLUSH CACHE EXT Dec 3 11:39:57 s5 kernel: [ 8406.044752] ata5.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 2 Dec 3 11:39:57 s5 kernel: [ 8406.044752] res 40/00:0c:bf:8f:03/00:00:00:00:00/40 Emask 0x50 (ATA bus error) Dec 3 11:39:57 s5 kernel: [ 8406.044753] ata5.00: status: { DRDY } Dec 3 11:39:57 s5 kernel: [ 8406.044756] ata5: hard resetting link Dec 3 11:40:03 s5 kernel: [ 8411.806856] ata5: link is slow to respond, please be patient (ready=0) Dec 3 11:40:04 s5 kernel: [ 8413.038465] ata5: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Dec 3 11:40:04 s5 kernel: [ 8413.043051] ata5.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded Dec 3 11:40:04 s5 kernel: [ 8413.043054] ata5.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out Dec 3 11:40:04 s5 kernel: [ 8413.043056] ata5.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out Dec 3 11:40:04 s5 kernel: [ 8413.064667] ata5.00: ACPI cmd ef/10:06:00:00:00:00 (SET FEATURES) succeeded Dec 3 11:40:04 s5 kernel: [ 8413.064670] ata5.00: ACPI cmd f5/00:00:00:00:00:00 (SECURITY FREEZE LOCK) filtered out Dec 3 11:40:04 s5 kernel: [ 8413.064671] ata5.00: ACPI cmd b1/c1:00:00:00:00:00 (DEVICE CONFIGURATION OVERLAY) filtered out Dec 3 11:40:04 s5 kernel: [ 8413.069177] ata5.00: configured for UDMA/133 Dec 3 11:40:04 s5 kernel: [ 8413.069180] ata5.00: retrying FLUSH 0xea Emask 0x50 Dec 3 11:40:04 s5 kernel: [ 8413.082443] ata5: EH complete Dec 3 11:40:35 s5 kernel: [ 8443.399817] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:35 s5 kernel: [ 8443.399822] ------------[ cut here ]------------ Dec 3 11:40:35 s5 kernel: [ 8443.399837] WARNING: CPU: 1 PID: 489 at fs/btrfs/inode.c:930 cow_file_range+0x3f7/0x410 [btrfs]() Dec 3 11:40:35 s5 kernel: [ 8443.399838] Modules linked in: snd_hda_codec_hdmi(E) joydev(E) rc_tt_1500(E) stb6100(E) lnbp22(E) x86_pkg_temp_thermal(E) intel_power clamp(E) coretemp(E) kvm_intel(E) stb0899(E) kvm(E) nvidia(POE) crct10dif_pclmul(E) dvb_usb_pctv452e(E) ttpci_eeprom(E) dvb_usb(E) dvb_core(E) crc32_pclmul(E) rc_c ore(E) ftdi_sio(E) hid_logitech_hidpp(E) usbserial(E) aesni_intel(E) aes_x86_64(E) lrw(E) gf128mul(E) glue_helper(E) ablk_helper(E) rfcomm(E) bnep(E) cryptd(E) blu etooth(E) microcode(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) serio_raw(E) snd_hda_intel(E) snd_seq_midi(E) snd_hda_codec(E) snd_seq_midi_event(E) snd_h da_core(E) snd_hwdep(E) snd_rawmidi(E) snd_pcm(E) snd_seq(E) snd_seq_device(E) snd_timer(E) tpm_tis(E) snd(E) soundcore(E) mei_me(E) shpchp(E) mei(E) lpc_ich(E) nf sd(E) auth_rpcgss(E) nfs_acl(E) nfs(E) lockd(E) grace(E) sunrpc(E) fscache(E) btrfs(E) xor(E) raid6_pq(E) hid_logitech_dj(E) hid_generic(E) usbhid(E) hid(E) sd_mod (E) psmouse(E) ahci(E) libahci(E) e1000e(E) ptp(E) pps_core(E) video(E) Dec 3 11:40:35 s5 kernel: [ 8443.399875] CPU: 1 PID: 489 Comm: btrfs-transacti Tainted: P OE 4.3.0+55 #1 Dec 3 11:40:35 s5 kernel: [ 8443.399876] Hardware name: /DH87RL, BIOS RLH8710H.86A.0323.2013.1204.1726 12/04/2013 Dec 3 11:40:35 s5 kernel: [ 8443.399877] ffffffffa01b7cd2 ffff8800d8813720 ffffffff8136cce5 0000000000000000 Dec 3 11:40:35 s5 kernel: [ 8443.399879] ffff8800d8813758 ffffffff8106c206 00000000ffffffea ffff8800d8813a40 Dec 3 11:40:35 s5 kernel: [ 8443.399881] ffff8800d88139c4 0000000000000000 ffff88006ac3c800 ffff8800d8813768 Dec 3 11:40:35 s5 kernel: [ 8443.399883] Call Trace: Dec 3 11:40:35 s5 kernel: [ 8443.399888] [<ffffffff8136cce5>] dump_stack+0x4e/0x79 Dec 3 11:40:35 s5 kernel: [ 8443.399892] [<ffffffff8106c206>] warn_slowpath_common+0x86/0xc0 Dec 3 11:40:35 s5 kernel: [ 8443.399894] [<ffffffff8106c2fa>] warn_slowpath_null+0x1a/0x20 Dec 3 11:40:35 s5 kernel: [ 8443.399903] [<ffffffffa01434b7>] cow_file_range+0x3f7/0x410 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399907] [<ffffffff81095f2d>] ? get_parent_ip+0xd/0x50 Dec 3 11:40:35 s5 kernel: [ 8443.399916] [<ffffffffa015e16b>] ? release_extent_buffer+0x2b/0xc0 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399925] [<ffffffffa015e64b>] ? free_extent_buffer+0x4b/0x90 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399932] [<ffffffffa0143842>] run_delalloc_nocow+0x372/0xab0 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399939] [<ffffffffa0143fe5>] run_del alloc_range+0x65/0x3b0 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399948] [<ffffffffa015a8bc>] ? find_lock_delalloc_range.constprop.41+0x1ac/0x1e0 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399956] [<ffffffffa015a9de>] writepage_delalloc.isra.31+0xee/0x140 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399963] [<ffffffffa015ba8b>] __extent_writepage+0xbb/0x2e0 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399966] [<ffffffff813934e6>] ? __percpu_counter_add+0x86/0xb0 Dec 3 11:40:35 s5 kernel: [ 8443.399974] [<ffffffffa015bfc7>] extent_write_cache_pages.isra.28.constprop.46+0x317/0x3d0 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399981] [<ffffffffa015db4d>] extent_writepages+0x4d/0x70 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399989] [<ffffffffa0140ef0>] ? btrfs_real_readdir+0x530/0x530 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.399992] [<ffffffff81729fba>] ? _raw_spin_unlock+0x1a/0x40 Dec 3 11:40:35 s5 kernel: [ 8443.399999] [<ffffffffa013e7c8>] btrfs_writepages+0x28/0x30 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.400001] [<ffffffff8116498e>] do_writepages+0x1e/0x30 Dec 3 11:40:35 s5 kernel: [ 8443.400003] [<ffffffff8115a1aa>] __filemap_fdatawrite_range+0xaa/0xf0 Dec 3 11:40:35 s5 kernel: [ 8443.400005] [<ffffffff8115a2b3>] filemap_fdatawrite_range+0x13/0x20 Dec 3 11:40:35 s5 kernel: [ 8443.400012] [<ffffffffa0151da0>] btrfs_fdatawrite_range+0x20/0x50 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.400020] [<ffffffffa017f26c>] __btrfs_write_out_cache.isra.24+0x3ac/0x400 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.400028] [<ffffffffa017fab7>] btrfs_write_out_cache+0x87/0xf0 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.400034] [<ffffffffa0128c1e>] btrfs_write_dirty_block_groups+0x1ee/0x290 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.400042] [<ffffffffa01af8eb>] commit_cowonly_roots+0x21f/0x2c2 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.400050] [<ffffffffa013ca0c>] btrfs_commit_transaction+0x57c/0xb20 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.400056] [<ffffffffa0137a6e>] transaction_kthread+0x19e/0x220 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.400062] [<ffffffffa01378d0>] ? btrfs_cleanup_transaction+0x550/0x550 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.400064] [<ffffffff81089e79>] kthread+0xc9/0xe0 Dec 3 11:40:35 s5 kernel: [ 8443.400066] [<ffffffff81089db0>] ? kthread_create_on_node+0x180/0x180 Dec 3 11:40:35 s5 kernel: [ 8443.400068] [<ffffffff8172ac4f>] ret_from_fork+0x3f/0x70 Dec 3 11:40:35 s5 kernel: [ 8443.400069] [<ffffffff81089db0>] ? kthread_create_on_node+0x180/0x180 Dec 3 11:40:35 s5 kernel: [ 8443.400070] ---[ end trace be7e07e73682720a ]--- Dec 3 11:40:35 s5 kernel: [ 8443.402164] BTRFS (device sde1): parent transid verify failed on 119447552 wanted 33856 found 31288 Dec 3 11:40:35 s5 kernel: [ 8443.402168] ------------[ cut here ]------------ Dec 3 11:40:35 s5 kernel: [ 8443.402176] WARNING: CPU: 1 PID: 489 at fs/btrfs/extent-tree.c:2851 btrfs_run_delayed_refs+0x239/0x290 [btrfs]() Dec 3 11:40:35 s5 kernel: [ 8443.402177] BTRFS: Transaction aborted (error -5) Dec 3 11:40:35 s5 kernel: [ 8443.402178] Modules linked in: snd_hda_codec_hdmi(E) joydev(E) rc_tt_1500(E) stb6100(E) lnbp22(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) kvm_intel(E) stb0899(E) kvm(E) nvidia(POE) crct10dif_pclmul(E) dvb_usb_pctv452e(E) ttpci_eeprom(E) dvb_usb(E) dvb_core(E) crc32_pclmul(E) rc_core(E) ftdi_sio(E) hid_logitech_hidpp(E) usbserial(E) aesni_intel(E) aes_x86_64(E) lrw(E) gf128mul(E) glue_helper(E) ablk_helper(E) rfcomm(E) bnep(E) cryptd(E) bluetooth(E) microcode(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) serio_raw(E) snd_hda_intel(E) snd_seq_midi(E) snd_hda_codec(E) snd_seq_midi_event(E) snd_hda_core(E) snd_hwdep(E) snd_rawmidi(E) snd_pcm(E) snd_seq(E) snd_seq_device(E) snd_timer(E) tpm_tis(E) snd(E) soundcore(E) mei_me(E) shpchp(E) mei(E) lpc_ich(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) nfs(E) lockd(E) grace(E) sunrpc(E) fscache(E) btrfs(E) xor(E) raid6_pq(E) hid_logitech_dj(E) hid_generic(E) usbhid(E) hid(E) sd_mod(E) psmouse(E) ahci(E) libahci(E) e1000e(E) ptp(E) pps_core(E) video(E) Dec 3 11:40:35 s5 kernel: [ 8443.402212] CPU: 1 PID: 489 Comm: btrfs-transacti Tainted: P W OE 4.3.0+55 #1 Dec 3 11:40:35 s5 kernel: [ 8443.402213] Hardware name: /DH87RL, BIOS RLH8710H.86A.0323.2013.1204.1726 12/04/2013 Dec 3 11:40:35 s5 kernel: [ 8443.402214] ffffffffa01b73ca ffff8800d8813c50 ffffffff8136cce5 ffff8800d8813c98 Dec 3 11:40:35 s5 kernel: [ 8443.402216] ffff8800d8813c88 ffffffff8106c206 ffff88020d650170 ffff880214ce6800 Dec 3 11:40:35 s5 kernel: [ 8443.402218] ffff8801ddea3080 00000000fffffffb 0000000000000000 ffff8800d8813ce8 Dec 3 11:40:35 s5 kernel: [ 8443.402220] Call Trace: Dec 3 11:40:35 s5 kernel: [ 8443.402224] [<ffffffff8136cce5>] dump_stack+0x4e/0x79 Dec 3 11:40:35 s5 kernel: [ 8443.402227] [<ffffffff8106c206>] warn_slowpath_common+0x86/0xc0 Dec 3 11:40:35 s5 kernel: [ 8443.402229] [<ffffffff8106c28c>] warn_slowpath_fmt+0x4c/0x50 Dec 3 11:40:35 s5 kernel: [ 8443.402235] [<ffffffffa0127f59>] btrfs_run_delayed_refs+0x239/0x290 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.402241] [<ffffffffa0128b2f>] btrfs_write_dirty_block_groups+0xff/0x290 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.402249] [<ffffffffa01af8eb>] commit_cowonly_roots+0x21f/0x2c2 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.402257] [<ffffffffa013ca0c>] btrfs_commit_transaction+0x57c/0xb20 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.402264] [<ffffffffa0137a6e>] transaction_kthread+0x19e/0x220 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.402270] [<ffffffffa01378d0>] ? btrfs_cleanup_transaction+0x550/0x550 [btrfs] Dec 3 11:40:35 s5 kernel: [ 8443.402273] [<ffffffff81089e79>] kthread+0xc9/0xe0 Dec 3 11:40:35 s5 kernel: [ 8443.402275] [<ffffffff81089db0>] ? kthread_create_on_node+0x180/0x180 Dec 3 11:40:35 s5 kernel: [ 8443.402276] [<ffffffff8172ac4f>] ret_from_fork+0x3f/0x70 Dec 3 11:40:35 s5 kernel: [ 8443.402278] [<ffffffff81089db0>] ? kthread_create_on_node+0x180/0x180 Dec 3 11:40:35 s5 kernel: [ 8443.402279] ---[ end trace be7e07e73682720b ]--- Dec 3 11:40:35 s5 kernel: [ 8443.402282] BTRFS: error (device sde1) in btrfs_run_delayed_refs:2851: errno=-5 IO failure Dec 3 11:40:35 s5 kernel: [ 8443.402284] BTRFS info (device sde1): forced readonly Dec 3 11:40:35 s5 kernel: [ 8443.402296] BTRFS warning (device sde1): Skipping commit of aborted transaction. Dec 3 11:40:35 s5 kernel: [ 8443.402297] BTRFS: error (device sde1) in cleanup_transaction:1741: errno=-5 IO failure Dec 3 11:40:59 s5 kernel: [ 8467.302985] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.303003] BTRFS info (device sde1): no csum found for inode 121013263 start 0 Dec 3 11:40:59 s5 kernel: [ 8467.310868] BTRFS warning (device sde1): csum failed ino 121013263 off 0 csum 1824992749 expected csum 0 Dec 3 11:40:59 s5 kernel: [ 8467.313151] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.313157] BTRFS info (device sde1): no csum found for inode 121013263 start 8192 Dec 3 11:40:59 s5 kernel: [ 8467.313460] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.313476] BTRFS info (device sde1): no csum found for inode 121013263 start 12288 Dec 3 11:40:59 s5 kernel: [ 8467.313642] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.313658] BTRFS info (device sde1): no csum found for inode 121013263 start 16384 Dec 3 11:40:59 s5 kernel: [ 8467.313829] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.313845] BTRFS info (device sde1): no csum found for inode 121013263 start 20480 Dec 3 11:40:59 s5 kernel: [ 8467.314070] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.314086] BTRFS info (device sde1): no csum found for inode 121013263 start 24576 Dec 3 11:40:59 s5 kernel: [ 8467.314245] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.314247] BTRFS info (device sde1): no csum found for inode 121013263 start 28672 Dec 3 11:40:59 s5 kernel: [ 8467.314418] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.314420] BTRFS info (device sde1): no csum found for inode 121013263 start 32768 Dec 3 11:40:59 s5 kernel: [ 8467.314651] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.314653] BTRFS info (device sde1): no csum found for inode 121013263 start 36864 Dec 3 11:40:59 s5 kernel: [ 8467.314808] BTRFS (device sde1): parent transid verify failed on 119382016 wanted 33856 found 31287 Dec 3 11:40:59 s5 kernel: [ 8467.314810] BTRFS info (device sde1): no csum found for inode 121013263 start 40960 Dec 3 11:40:59 s5 kernel: [ 8467.315007] BTRFS info (device sde1): no csum found for inode 121013263 start 45056 Dec 3 11:40:59 s5 kernel: [ 8467.315213] BTRFS info (device sde1): no csum found for inode 121013263 start 49152 Dec 3 11:40:59 s5 kernel: [ 8467.315394] BTRFS info (device sde1): no csum found for inode 121013263 start 53248 Dec 3 11:40:59 s5 kernel: [ 8467.315531] BTRFS info (device sde1): no csum found for inode 121013263 start 57344 Dec 3 11:40:59 s5 kernel: [ 8467.315731] BTRFS info (device sde1): no csum found for inode 121013263 start 61440 Dec 3 11:40:59 s5 kernel: [ 8467.315820] BTRFS info (device sde1): no csum found for inode 121013263 start 65536 Dec 3 11:40:59 s5 kernel: [ 8467.315909] BTRFS info (device sde1): no csum found for inode 121013263 start 69632 Dec 3 11:40:59 s5 kernel: [ 8467.316119] BTRFS info (device sde1): no csum found for inode 121013263 start 73728 Dec 3 11:40:59 s5 kernel: [ 8467.316212] BTRFS info (device sde1): no csum found for inode 121013263 start 77824 Dec 3 11:40:59 s5 kernel: [ 8467.316310] BTRFS info (device sde1): no csum found for inode 121013263 start 81920 Dec 3 11:40:59 s5 kernel: [ 8467.316407] BTRFS info (device sde1): no csum found for inode 121013263 start 86016 Dec 3 11:40:59 s5 kernel: [ 8467.316619] BTRFS info (device sde1): no csum found for inode 121013263 start 90112 Dec 3 11:40:59 s5 kernel: [ 8467.316703] BTRFS info (device sde1): no csum found for inode 121013263 start 94208 Dec 3 11:40:59 s5 kernel: [ 8467.316793] BTRFS info (device sde1): no csum found for inode 121013263 start 98304 Dec 3 11:40:59 s5 kernel: [ 8467.317012] BTRFS info (device sde1): no csum found for inode 121013263 start 102400 Dec 3 11:40:59 s5 kernel: [ 8467.317102] BTRFS info (device sde1): no csum found for inode 121013263 start 106496 Dec 3 11:40:59 s5 kernel: [ 8467.331920] BTRFS info (device sde1): no csum found for inode 121013263 start 118784 Dec 3 11:40:59 s5 kernel: [ 8467.332199] BTRFS info (device sde1): no csum found for inode 121013263 start 131072 Dec 3 11:40:59 s5 kernel: [ 8467.344243] BTRFS warning (device sde1): csum failed ino 121013263 off 8192 csum 1179143129 expected csum 0 Dec 3 11:40:59 s5 kernel: [ 8467.344302] BTRFS warning (device sde1): csum failed ino 121013263 off 20480 csum 4208104202 expected csum 0 -- Wolfgang -- 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