W dniu 02.01.2020 o 22:57, Chris Murphy pisze:
> but I would say that in retrospect it would have been better to NOT
> delete the device with a few bad sectors, and instead use `btrfs
> replace` to do a 1:1 replacement of that particular drive.
Tested "replace" on ahother server:
root@zefir:~# btrfs replace start /dev/sde1 /dev/sdb3 /
and speed was quite normal:
1.49 TiB * ( 1024 * 1024 MiB/TiB ) / ( 4.5 hours * 3600 sec/hour )
= 1.49 * ( 1024 * 1024 ) / ( 4.5 * 3600 ) = 96.44 MiB / sec
Questions:
1. it is a little bit confusing that kerner reports sdc1 and sde1 on the
same line: "BTRFS warning (device sdc1): i/o error ... on dev
/dev/sde1"....
2. can I reset counters of errors for /dev/sda1? there were errors due
to malfunctioning SATA cable, cable was replaced and counters don't grow
any more; btrfs withstood that failure with no data loss
=======================================
root@zefir:~# tail /var/log/kern.log
Jan 6 00:19:37 zefir kernel: [33959.394053] BTRFS info (device sdc1):
dev_replace from /dev/sde1 (devid 4) to /dev/sdb3 started
Jan 6 00:50:32 zefir kernel: [35815.080061] INFO: NMI handler
(perf_event_nmi_handler) took too long to run: 1.126 msecs
Jan 6 04:48:25 zefir kernel: [50087.254634] BTRFS info (device sdc1):
dev_replace from /dev/sde1 (devid 4) to /dev/sdb3 finished
root@zefir:~# btrfs dev usage /
/dev/sda1, ID: 5
Device size: 1.80TiB
Device slack: 0.00B
Data,RAID1: 1.51TiB
Metadata,RAID1: 20.00GiB
System,RAID1: 32.00MiB
Unallocated: 279.97GiB
/dev/sdb3, ID: 4
Device size: 1.80TiB
Device slack: 1.77GiB <<<<------------
Data,RAID1: 1.49TiB
Metadata,RAID1: 42.00GiB
Unallocated: 280.00GiB
/dev/sdc1, ID: 1
Device size: 1.80TiB
Device slack: 0.00B
Data,RAID1: 1.50TiB
Metadata,RAID1: 30.00GiB
Unallocated: 278.00GiB
/dev/sdd1, ID: 3
Device size: 1.80TiB
Device slack: 0.00B
Data,RAID1: 1.50TiB
Metadata,RAID1: 36.00GiB
Unallocated: 277.00GiB
/dev/sdf1, ID: 2
Device size: 1.80TiB
Device slack: 0.00B
Data,RAID1: 1.49TiB
Metadata,RAID1: 40.00GiB
System,RAID1: 32.00MiB
Unallocated: 279.97GiB
# reduce slack
root@zefir:~# btrfs fi resize 4:max /
Resize '/' of '4:max'
root@zefir:~# btrfs dev usage /
...
/dev/sdb3, ID: 4
Device size: 1.80TiB
Device slack: 3.50KiB <<<<<<<<<<<<<<<<<<<<
Data,RAID1: 1.49TiB
Metadata,RAID1: 42.00GiB
Unallocated: 281.77GiB
...
root@zefir:~# btrfs dev stat /
[/dev/sdc1].write_io_errs 0
[/dev/sdc1].read_io_errs 0
[/dev/sdc1].flush_io_errs 0
[/dev/sdc1].corruption_errs 0
[/dev/sdc1].generation_errs 0
[/dev/sdf1].write_io_errs 0
[/dev/sdf1].read_io_errs 0
[/dev/sdf1].flush_io_errs 0
[/dev/sdf1].corruption_errs 0
[/dev/sdf1].generation_errs 0
[/dev/sdd1].write_io_errs 0
[/dev/sdd1].read_io_errs 0
[/dev/sdd1].flush_io_errs 0
[/dev/sdd1].corruption_errs 0
[/dev/sdd1].generation_errs 0
[/dev/sdb3].write_io_errs 0
[/dev/sdb3].read_io_errs 0
[/dev/sdb3].flush_io_errs 0
[/dev/sdb3].corruption_errs 0
[/dev/sdb3].generation_errs 0
[/dev/sda1].write_io_errs 10418
[/dev/sda1].read_io_errs 227
[/dev/sda1].flush_io_errs 117
[/dev/sda1].corruption_errs 77
[/dev/sda1].generation_errs 47
# erorr count doesn't change any more:
root@zefir:/mnt/root/zefir_snaps# egrep . */root/btrfs_dev_stat | egrep
write_io_errs | egrep sda1 | egrep ' 23:'
2019-12-27 23:50:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2019-12-28 23:50:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2019-12-29 23:50:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2019-12-30 23:50:02 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2019-12-31 23:50:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-01 23:50:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-02 23:50:03 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-03 23:50:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-04 23:50:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-05 23:00:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-05 23:10:03 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-05 23:20:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-05 23:30:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-05 23:40:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
2020-01-05 23:50:01 z
harmonogramu/root/btrfs_dev_stat:[/dev/sda1].write_io_errs 10418
######### kernel log
root@zefir:~# cat /var/log/kern.log | egrep BTRFS
Jan 5 13:52:09 zefir kernel: [1291932.446093] BTRFS warning (device
sdc1): i/o error at logical 11658111352832 on dev /dev/sde1, physical
867246145536: metadata leaf (level 0) in tree 9109477097472
Jan 5 13:52:09 zefir kernel: [1291932.446095] BTRFS warning (device
sdc1): i/o error at logical 11658111352832 on dev /dev/sde1, physical
867246145536: metadata leaf (level 0) in tree 9109477097472
Jan 5 13:52:09 zefir kernel: [1291932.446098] BTRFS error (device
sdc1): bdev /dev/sde1 errs: wr 0, rd 2, flush 0, corrupt 0, gen 0
Jan 5 13:52:09 zefir kernel: [1291932.689845] BTRFS error (device
sdc1): fixed up error at logical 11658111352832 on dev /dev/sde1
Jan 5 14:54:30 zefir kernel: [ 4.654734] BTRFS: device fsid
dd38db97-fa4a-479b-bc1b-973f01a61a8a devid 1 transid 257 /dev/sdd3
Jan 5 14:54:30 zefir kernel: [ 4.654855] BTRFS: device fsid
0a75ba3d-0540-4370-bb04-22470e855caa devid 1 transid 241 /dev/sdf3
Jan 5 14:54:30 zefir kernel: [ 4.655047] BTRFS: device fsid
e2652ff5-6d5e-45de-912c-a662f92c10f0 devid 1 transid 280 /dev/sde3
Jan 5 14:54:30 zefir kernel: [ 4.655200] BTRFS: device fsid
8e960630-2b51-452b-b026-abc59dcf5f35 devid 1 transid 61 /dev/sda3
Jan 5 14:54:30 zefir kernel: [ 4.661180] BTRFS: device fsid
c100cf56-f210-42d7-a953-bbe1974a28f0 devid 1 transid 292 /dev/sdc3
Jan 5 14:54:30 zefir kernel: [ 4.661331] BTRFS: device fsid
9d6e641c-ec71-411e-9312-f1f67a70913f devid 3 transid 2500779 /dev/sdd1
Jan 5 14:54:30 zefir kernel: [ 4.661450] BTRFS: device fsid
9d6e641c-ec71-411e-9312-f1f67a70913f devid 2 transid 2500779 /dev/sdf1
Jan 5 14:54:30 zefir kernel: [ 4.663399] BTRFS: device fsid
9d6e641c-ec71-411e-9312-f1f67a70913f devid 4 transid 2500779 /dev/sde1
Jan 5 14:54:30 zefir kernel: [ 4.663547] BTRFS: device fsid
9d6e641c-ec71-411e-9312-f1f67a70913f devid 5 transid 2500779 /dev/sda1
Jan 5 14:54:30 zefir kernel: [ 4.663779] BTRFS: device fsid
9d6e641c-ec71-411e-9312-f1f67a70913f devid 1 transid 2500779 /dev/sdc1
Jan 5 14:54:30 zefir kernel: [ 4.695640] BTRFS info (device sdc1):
disk space caching is enabled
Jan 5 14:54:30 zefir kernel: [ 4.695642] BTRFS info (device sdc1):
has skinny extents
Jan 5 14:54:30 zefir kernel: [ 5.363215] BTRFS info (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 2, flush 0, corrupt 0, gen 0
Jan 5 14:54:30 zefir kernel: [ 5.363219] BTRFS info (device sdc1):
bdev /dev/sda1 errs: wr 10418, rd 227, flush 117, corrupt 77, gen 47
Jan 5 14:54:30 zefir kernel: [ 37.646828] BTRFS info (device sdc1):
disk space caching is enabled
Jan 5 19:55:25 zefir kernel: [18107.366949] BTRFS warning (device
sdc1): i/o error at logical 8728914731008 on dev /dev/sde1, physical
1395531751424, root 119218, inode 63539433, offset 138190848, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:25 zefir kernel: [18107.366952] BTRFS warning (device
sdc1): i/o error at logical 8728912101376 on dev /dev/sde1, physical
1395529121792, root 119218, inode 63539433, offset 135561216, length
4096, links 1 (path: var/mail/bem1)
------------------------------------------------
------ 8< cut many similar erorrs ------------------
------------------------------------------------
Jan 5 19:55:25 zefir kernel: [18107.368411] BTRFS warning (device
sdc1): i/o error at logical 8728912101376 on dev /dev/sde1, physical
1395529121792, root 119122, inode 63539433, offset 135561216, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:25 zefir kernel: [18107.368413] BTRFS warning (device
sdc1): i/o error at logical 8728914731008 on dev /dev/sde1, physical
1395531751424, root 119122, inode 63539433, offset 138190848, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:25 zefir kernel: [18107.368441] BTRFS warning (device
sdc1): i/o error at logical 8728914731008 on dev /dev/sde1, physical
1395531751424, root 119120, inode 63539433, offset 138190848, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:25 zefir kernel: [18107.368443] BTRFS warning (device
sdc1): i/o error at logical 8728912101376 on dev /dev/sde1, physical
1395529121792, root 119120, inode 63539433, offset 135561216, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:25 zefir kernel: [18107.446304] BTRFS error (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 3, flush 0, corrupt 0, gen 0
Jan 5 19:55:25 zefir kernel: [18107.446306] BTRFS error (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 4, flush 0, corrupt 0, gen 0
Jan 5 19:55:25 zefir kernel: [18107.446450] BTRFS error (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 5, flush 0, corrupt 0, gen 0
Jan 5 19:55:25 zefir kernel: [18107.473619] BTRFS error (device sdc1):
fixed up error at logical 8728912101376 on dev /dev/sde1
Jan 5 19:55:29 zefir kernel: [18111.775171] BTRFS error (device sdc1):
fixed up error at logical 8728914731008 on dev /dev/sde1
Jan 5 19:55:29 zefir kernel: [18111.775336] BTRFS error (device sdc1):
fixed up error at logical 8728913416192 on dev /dev/sde1
Jan 5 19:55:29 zefir kernel: [18111.778932] BTRFS error (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 6, flush 0, corrupt 0, gen 0
Jan 5 19:55:29 zefir kernel: [18111.779367] BTRFS error (device sdc1):
fixed up error at logical 8728912105472 on dev /dev/sde1
Jan 5 19:55:34 zefir kernel: [18116.660449] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 119218, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.660476] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 119216, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.660502] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 119214, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.660528] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 119212, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.660554] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 119210, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.660580] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 119208, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
------------------------------------------------
------ 8< cut many similar erorrs ------------------
------------------------------------------------
Jan 5 19:55:34 zefir kernel: [18116.662869] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 118872, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.662894] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 118860, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.662919] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 118848, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.663077] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 118836, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.663104] BTRFS warning (device
sdc1): i/o error at logical 8728914735104 on dev /dev/sde1, physical
1395531755520, root 118824, inode 63539433, offset 138194944, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:34 zefir kernel: [18116.663863] BTRFS error (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 7, flush 0, corrupt 0, gen 0
Jan 5 19:55:38 zefir kernel: [18120.678251] BTRFS error (device sdc1):
fixed up error at logical 8728914735104 on dev /dev/sde1
Jan 5 19:55:38 zefir kernel: [18120.681960] BTRFS error (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 8, flush 0, corrupt 0, gen 0
Jan 5 19:55:42 zefir kernel: [18124.968600] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 119218, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:42 zefir kernel: [18124.968627] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 119216, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
------------------------------------------------
------ 8< cut many similar erorrs ------------------
------------------------------------------------
Jan 5 19:55:42 zefir kernel: [18124.968961] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 119190, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:42 zefir kernel: [18124.968986] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 119188, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:42 zefir kernel: [18124.969010] BTRFS error (device sdc1):
fixed up error at logical 8728912109568 on dev /dev/sde1
Jan 5 19:55:42 zefir kernel: [18124.969012] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 119186, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:42 zefir kernel: [18124.969038] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 119184, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
------------------------------------------------
------ 8< cut many similar erorrs ------------------
------------------------------------------------
Jan 5 19:55:42 zefir kernel: [18124.971065] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 118872, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:42 zefir kernel: [18124.971091] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 118860, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:42 zefir kernel: [18124.971117] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 118848, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:42 zefir kernel: [18124.971143] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 118836, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:42 zefir kernel: [18124.971169] BTRFS warning (device
sdc1): i/o error at logical 8728913420288 on dev /dev/sde1, physical
1395530440704, root 118824, inode 63539433, offset 136880128, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:42 zefir kernel: [18124.971948] BTRFS error (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 9, flush 0, corrupt 0, gen 0
Jan 5 19:55:42 zefir kernel: [18125.004219] BTRFS error (device sdc1):
fixed up error at logical 8728913420288 on dev /dev/sde1
Jan 5 19:55:47 zefir kernel: [18129.529678] BTRFS error (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 10, flush 0, corrupt 0, gen 0
Jan 5 19:55:51 zefir kernel: [18133.498294] BTRFS error (device sdc1):
fixed up error at logical 8728914739200 on dev /dev/sde1
Jan 5 19:55:51 zefir kernel: [18133.498938] BTRFS warning (device
sdc1): i/o error at logical 8728913424384 on dev /dev/sde1, physical
1395530444800, root 119218, inode 63539433, offset 136884224, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:51 zefir kernel: [18133.498966] BTRFS warning (device
sdc1): i/o error at logical 8728913424384 on dev /dev/sde1, physical
1395530444800, root 119216, inode 63539433, offset 136884224, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:51 zefir kernel: [18133.498992] BTRFS warning (device
sdc1): i/o error at logical 8728913424384 on dev /dev/sde1, physical
1395530444800, root 119214, inode 63539433, offset 136884224, length
4096, links 1 (path: var/mail/bem1)
------------------------------------------------
------ 8< cut many similar erorrs ------------------
------------------------------------------------
Jan 5 19:55:51 zefir kernel: [18133.501578] BTRFS warning (device
sdc1): i/o error at logical 8728913424384 on dev /dev/sde1, physical
1395530444800, root 118848, inode 63539433, offset 136884224, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:51 zefir kernel: [18133.501604] BTRFS warning (device
sdc1): i/o error at logical 8728913424384 on dev /dev/sde1, physical
1395530444800, root 118836, inode 63539433, offset 136884224, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:51 zefir kernel: [18133.501629] BTRFS warning (device
sdc1): i/o error at logical 8728913424384 on dev /dev/sde1, physical
1395530444800, root 118824, inode 63539433, offset 136884224, length
4096, links 1 (path: var/mail/bem1)
Jan 5 19:55:51 zefir kernel: [18133.502390] BTRFS error (device sdc1):
bdev /dev/sde1 errs: wr 0, rd 11, flush 0, corrupt 0, gen 0
Jan 5 19:55:51 zefir kernel: [18133.525951] BTRFS error (device sdc1):
fixed up error at logical 8728913424384 on dev /dev/sde1
Jan 6 00:19:37 zefir kernel: [33959.394053] BTRFS info (device sdc1):
dev_replace from /dev/sde1 (devid 4) to /dev/sdb3 started
Jan 6 04:48:25 zefir kernel: [50087.254634] BTRFS info (device sdc1):
dev_replace from /dev/sde1 (devid 4) to /dev/sdb3 finished
########## before replace (/dev/sde1 got errors):
[/dev/sdc1].write_io_errs 0
[/dev/sdc1].read_io_errs 0
[/dev/sdc1].flush_io_errs 0
[/dev/sdc1].corruption_errs 0
[/dev/sdc1].generation_errs 0
[/dev/sdf1].write_io_errs 0
[/dev/sdf1].read_io_errs 0
[/dev/sdf1].flush_io_errs 0
[/dev/sdf1].corruption_errs 0
[/dev/sdf1].generation_errs 0
[/dev/sdd1].write_io_errs 0
[/dev/sdd1].read_io_errs 0
[/dev/sdd1].flush_io_errs 0
[/dev/sdd1].corruption_errs 0
[/dev/sdd1].generation_errs 0
[/dev/sde1].write_io_errs 0
[/dev/sde1].read_io_errs 11
[/dev/sde1].flush_io_errs 0
[/dev/sde1].corruption_errs 0
[/dev/sde1].generation_errs 0
[/dev/sda1].write_io_errs 10418
[/dev/sda1].read_io_errs 227
[/dev/sda1].flush_io_errs 117
[/dev/sda1].corruption_errs 77
[/dev/sda1].generation_errs 47
root@zefir:/# smartctl -a /dev/sde | egrep 'Pending|Offline_Unc|Error
Count'
197 Current_Pending_Sector 0x0012 100 100 000 Old_age
Always - 0
198 Offline_Uncorrectable 0x0010 100 100 000 Old_age
Offline - 0
ATA Error Count: 16 (device log contains only the most recent five errors)
