Hello,
2014-05-02 17:42 GMT+08:00 Jaap Pieroen <j...@pieroen.nl>: > Hi all, > > I completed a full scrub: > root@nasbak:/home/jpieroen# btrfs scrub status /home/ > scrub status for 7ca5f38e-308f-43ab-b3ea-31b3bcd11a0d > scrub started at Wed Apr 30 08:30:19 2014 and finished after 144131 seconds > total bytes scrubbed: 4.76TiB with 0 errors > > Then tried to remove a device: > root@nasbak:/home/jpieroen# btrfs device delete /dev/sdb /home > > This triggered bug_on, with the following error in dmesg: csum failed > ino 258 off 1395560448 csum 2284440321 expected csum 319628859 > > How can there still be csum failures directly after a scrub? > If I rerun the scrub it still won't find any errors. I know this, > because I've had the same issue 3 times in a row. Each time running a > scrub and still being unable to remove the device. There is a known RAID5/6 bug, i sent a patch to address this problem. Could you please double check if your kernel source includes the following commit: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=3b080b2564287be91605bfd1d5ee985696e61d3c RAID5/6 should detect checksum mismatch, it can not fix errors now. Thanks, Wang > > Kind Regards, > Jaap > > -------------------------------------------------------------- > Details: > > root@nasbak:/home/jpieroen# uname -a > Linux nasbak 3.14.1-031401-generic #201404141220 SMP Mon Apr 14 > 16:21:48 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux > > root@nasbak:/home/jpieroen# btrfs --version > Btrfs v3.14.1 > > root@nasbak:/home/jpieroen# btrfs fi df /home > Data, RAID5: total=4.57TiB, used=4.55TiB > System, RAID1: total=32.00MiB, used=352.00KiB > Metadata, RAID1: total=7.00GiB, used=5.59GiB > > root@nasbak:/home/jpieroen# btrfs fi show > Label: 'btrfs_storage' uuid: 7ca5f38e-308f-43ab-b3ea-31b3bcd11a0d > Total devices 6 FS bytes used 4.56TiB > devid 1 size 1.82TiB used 1.31TiB path /dev/sde > devid 2 size 1.82TiB used 1.31TiB path /dev/sdf > devid 3 size 1.82TiB used 1.31TiB path /dev/sdg > devid 4 size 931.51GiB used 25.00GiB path /dev/sdb > devid 6 size 2.73TiB used 994.03GiB path /dev/sdh > devid 7 size 2.73TiB used 994.03GiB path /dev/sdi > > Btrfs v3.14.1 > > jpieroen@nasbak:~$ dmesg > [227248.656438] BTRFS info (device sdi): relocating block group > 9735225016320 flags 129 > [227261.713860] BTRFS info (device sdi): found 9 extents > [227264.531019] BTRFS info (device sdi): found 9 extents > [227265.011826] BTRFS info (device sdi): relocating block group > 76265029632 flags 129 > [227274.052249] BTRFS info (device sdi): csum failed ino 258 off > 1395560448 csum 2284440321 expected csum 319628859 > [227274.052354] BTRFS info (device sdi): csum failed ino 258 off > 1395564544 csum 3646299263 expected csum 319628859 > [227274.052402] BTRFS info (device sdi): csum failed ino 258 off > 1395568640 csum 281259278 expected csum 319628859 > [227274.052449] BTRFS info (device sdi): csum failed ino 258 off > 1395572736 csum 2594807184 expected csum 319628859 > [227274.052492] BTRFS info (device sdi): csum failed ino 258 off > 1395576832 csum 4288971971 expected csum 319628859 > [227274.052537] BTRFS info (device sdi): csum failed ino 258 off > 1395580928 csum 752615894 expected csum 319628859 > [227274.052581] BTRFS info (device sdi): csum failed ino 258 off > 1395585024 csum 3828951500 expected csum 319628859 > [227274.061279] ------------[ cut here ]------------ > [227274.061354] kernel BUG at /home/apw/COD/linux/fs/btrfs/extent_io.c:2116! > [227274.061445] invalid opcode: 0000 [#1] SMP > [227274.061509] Modules linked in: cuse deflate > [227274.061573] BTRFS info (device sdi): csum failed ino 258 off > 1395560448 csum 2284440321 expected csum 319628859 > [227274.061707] ctr twofish_generic twofish_x86_64_3way > twofish_x86_64 twofish_common camellia_generic camellia_x86_64 > serpent_sse2_x86_64 xts serpent_generic lrw gf128mul glue_helper > blowfish_generic blowfish_x86_64 blowfish_common cast5_generic > cast_common ablk_helper cryptd des_generic cmac xcbc rmd160 > crypto_null af_key xfrm_algo nfsd auth_rpcgss nfs_acl nfs lockd sunrpc > fscache dm_crypt ip6t_REJECT ppdev xt_hl ip6t_rt nf_conntrack_ipv6 > nf_defrag_ipv6 ipt_REJECT xt_comment xt_LOG kvm xt_recent microcode > xt_multiport xt_limit xt_tcpudp psmouse serio_raw xt_addrtype k10temp > edac_core ipt_MASQUERADE edac_mce_amd iptable_nat nf_nat_ipv4 > sp5100_tco nf_conntrack_ipv4 nf_defrag_ipv4 ftdi_sio i2c_piix4 > usbserial xt_conntrack ip6table_filter ip6_tables joydev > nf_conntrack_netbios_ns nf_conntrack_broadcast snd_hda_codec_via > nf_nat_ftp snd_hda_codec_hdmi nf_nat snd_hda_codec_generic > nf_conntrack_ftp nf_conntrack snd_hda_intel iptable_filter > ir_lirc_codec(OF) lirc_dev(OF) ip_tables snd_hda_codec > ir_mce_kbd_decoder(OF) x_tables snd_hwdep ir_sony_decoder(OF) > rc_tbs_nec(OF) ir_jvc_decoder(OF) snd_pcm ir_rc6_decoder(OF) > ir_rc5_decoder(OF) saa716x_tbs_dvb(OF) tbs6982fe(POF) tbs6680fe(POF) > ir_nec_decoder(OF) tbs6923fe(POF) tbs6985se(POF) tbs6928se(POF) > tbs6982se(POF) tbs6991fe(POF) tbs6618fe(POF) saa716x_core(OF) > tbs6922fe(POF) tbs6928fe(POF) tbs6991se(POF) stv090x(OF) dvb_core(OF) > rc_core(OF) snd_timer snd soundcore asus_atk0110 parport_pc shpchp > mac_hid lp parport btrfs xor raid6_pq pata_acpi hid_generic usbhid hid > usb_storage radeon pata_atiixp r8169 mii i2c_algo_bit sata_sil24 ttm > drm_kms_helper drm ahci libahci wmi > [227274.064118] CPU: 1 PID: 15543 Comm: btrfs-endio-4 Tainted: PF > O 3.14.1-031401-generic #201404141220 > [227274.064246] Hardware name: System manufacturer System Product > Name/M4A78LT-M, BIOS 0802 08/24/2010 > [227274.064368] task: ffff88030a0e31e0 ti: ffff8800a15b8000 task.ti: > ffff8800a15b8000 > [227274.064467] RIP: 0010:[<ffffffffa0304c33>] [<ffffffffa0304c33>] > clean_io_failure+0x1a3/0x1b0 [btrfs] > [227274.064623] RSP: 0018:ffff8800a15b9cd8 EFLAGS: 00010246 > [227274.064694] RAX: 0000000000000000 RBX: ffff88010b2869b8 RCX: > 0000000000000000 > [227274.064789] RDX: ffff8802cad30f00 RSI: 00000000720071fe RDI: > ffff88010b286884 > [227274.064883] RBP: ffff8800a15b9d28 R08: 0000000000000000 R09: > 0000000000000000 > [227274.064977] R10: 0000000000000200 R11: 0000000000000000 R12: > ffffea000102b080 > [227274.065071] R13: ffff880004366c00 R14: ffff88010b286800 R15: > 00000000532ef000 > [227274.065166] FS: 00007f16670b0740(0000) GS:ffff88031fc40000(0000) > knlGS:0000000000000000 > [227274.065271] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > [227274.065348] CR2: 00007f9c5c3b0000 CR3: 00000002dd8a8000 CR4: > 00000000000007e0 > [227274.065443] Stack: > [227274.065471] 00000000000532ef ffff88030a14c000 0000000000000000 > ffff880004366c00 > [227274.065584] ffff88030a95f780 ffffea000102b080 ffff8801026cc4b0 > ffff88010b2869b8 > [227274.065697] 00000000532ef000 0000000000000000 ffff8800a15b9db8 > ffffffffa0304f1b > [227274.065809] Call Trace: > [227274.065872] [<ffffffffa0304f1b>] > end_bio_extent_readpage+0x2db/0x3d0 [btrfs] > [227274.065971] [<ffffffff8120a013>] bio_endio+0x53/0xa0 > [227274.066042] [<ffffffff8120a072>] bio_endio_nodec+0x12/0x20 > [227274.066137] [<ffffffffa02dde81>] end_workqueue_fn+0x41/0x50 [btrfs] > [227274.066243] [<ffffffffa03157d0>] worker_loop+0xa0/0x330 [btrfs] > [227274.066345] [<ffffffffa0315730>] ? > check_pending_worker_creates.isra.1+0xe0/0xe0 [btrfs] > [227274.066455] [<ffffffff8108ffa9>] kthread+0xc9/0xe0 > [227274.066522] [<ffffffff8108fee0>] ? flush_kthread_worker+0xb0/0xb0 > [227274.066606] [<ffffffff817721bc>] ret_from_fork+0x7c/0xb0 > [227274.066680] [<ffffffff8108fee0>] ? flush_kthread_worker+0xb0/0xb0 > [227274.066761] Code: 00 00 83 f8 01 0f 8e 49 ff ff ff 49 8b 4d 18 49 > 8b 55 10 4d 89 e0 45 8b 4d 2c 48 8b 7d b8 4c 89 fe e8 72 fc ff ff e9 > 29 ff ff ff <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 66 66 90 55 > 48 89 > [227274.067266] RIP [<ffffffffa0304c33>] clean_io_failure+0x1a3/0x1b0 [btrfs] > [227274.067380] RSP <ffff8800a15b9cd8> > -- > 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 -- 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
