From: Alexander Shenkin <al@shenkin.org>
To: Brad Campbell <lists2009@fnarfbargle.com>,
Phil Turmel <philip@turmel.org>,
Reindl Harald <h.reindl@thelounge.net>,
Edward Kuns <eddie.kuns@gmail.com>,
Mark Knecht <markknecht@gmail.com>
Cc: Wols Lists <antlists@youngman.org.uk>,
Carsten Aulbert <carsten.aulbert@aei.mpg.de>,
Linux-RAID <linux-raid@vger.kernel.org>
Subject: Re: SMART detects pending sectors; take offline?
Date: Thu, 4 Jan 2018 13:39:24 +0000 [thread overview]
Message-ID: <cd34964a-e269-6dd7-3c36-73a9c8dbb61d@shenkin.org> (raw)
In-Reply-To: <97c75be5-1988-0e66-0d50-f06188418b3b@fnarfbargle.com>
On 1/4/2018 1:16 PM, Brad Campbell wrote:>
> Damn. I saw your initial mail, but I was out and nowhere near a device I
> could use to reply sensibly.
> You should *really* check by looking at the mdadm --examine output and
> calculating the position of the sectors in question to be absolutely
> sure the area you just wrote over was not in the active array area. If
> it was then you should stop the checkarray *now* and come back for advice.
Thanks Brad, no worries, really appreciate your attention. I stopped
checkarray. It had one rebuild event (Rebuild99) in /dev/md0 (small
RAID1, where /boot is mounted) before I stopped it. Here's the examine
output (not really sure what to do with it, will wait for advice):
user@machinename:~$ sudo mdadm --examine /dev/sd*
/dev/sda:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sda1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 437e4abb:c7ac46f1:ef8b2976:94921060
Name : arrayname:0
Creation Time : Mon Dec 7 08:31:31 2015
Raid Level : raid1
Raid Devices : 4
Avail Dev Size : 3901440 (1905.32 MiB 1997.54 MB)
Array Size : 1950656 (1905.26 MiB 1997.47 MB)
Used Dev Size : 3901312 (1905.26 MiB 1997.47 MB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 9cb1890b:ad675b3b:7517467f:0780ec8e
Update Time : Thu Jan 4 12:00:45 2018
Checksum : 682930c3 - correct
Events : 215
Device Role : Active device 0
Array State : AAAA ('A' == active, '.' == missing)
mdadm: No md superblock detected on /dev/sda2.
/dev/sda3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c7303f62:d848d424:269581c8:83a045ec
Name : ubuntu:2
Creation Time : Sun Feb 5 23:39:58 2017
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5840377856 (2784.91 GiB 2990.27 GB)
Array Size : 8760566784 (8354.73 GiB 8970.82 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 64c8db38:3d0a6895:be2259d8:4c3c3542
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Jan 4 13:34:53 2018
Checksum : d9775efa - correct
Events : 81186
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAAA ('A' == active, '.' == missing)
mdadm: No md superblock detected on /dev/sda4.
/dev/sdb:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 437e4abb:c7ac46f1:ef8b2976:94921060
Name : arrayname:0
Creation Time : Mon Dec 7 08:31:31 2015
Raid Level : raid1
Raid Devices : 4
Avail Dev Size : 3901440 (1905.32 MiB 1997.54 MB)
Array Size : 1950656 (1905.26 MiB 1997.47 MB)
Used Dev Size : 3901312 (1905.26 MiB 1997.47 MB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 38999554:d1b0db8d:d8066e72:86865c31
Update Time : Thu Jan 4 12:00:45 2018
Checksum : 995557b1 - correct
Events : 215
Device Role : Active device 2
Array State : AAAA ('A' == active, '.' == missing)
mdadm: No md superblock detected on /dev/sdb2.
/dev/sdb3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c7303f62:d848d424:269581c8:83a045ec
Name : ubuntu:2
Creation Time : Sun Feb 5 23:39:58 2017
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5840377856 (2784.91 GiB 2990.27 GB)
Array Size : 8760566784 (8354.73 GiB 8970.82 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : cf70dad5:0c9ff5f6:ede689f2:ccee2eb0
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Jan 4 13:34:53 2018
Checksum : 602e12e9 - correct
Events : 81186
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAAA ('A' == active, '.' == missing)
mdadm: No md superblock detected on /dev/sdb4.
/dev/sdc:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sdc1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 437e4abb:c7ac46f1:ef8b2976:94921060
Name : arrayname:0
Creation Time : Mon Dec 7 08:31:31 2015
Raid Level : raid1
Raid Devices : 4
Avail Dev Size : 3901440 (1905.32 MiB 1997.54 MB)
Array Size : 1950656 (1905.26 MiB 1997.47 MB)
Used Dev Size : 3901312 (1905.26 MiB 1997.47 MB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : f162eae5:19f8926b:f5bb6a2a:8adbbefd
Update Time : Thu Jan 4 12:00:45 2018
Checksum : 8cb8728a - correct
Events : 215
Device Role : Active device 3
Array State : AAAA ('A' == active, '.' == missing)
mdadm: No md superblock detected on /dev/sdc2.
/dev/sdc3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c7303f62:d848d424:269581c8:83a045ec
Name : ubuntu:2
Creation Time : Sun Feb 5 23:39:58 2017
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5840377856 (2784.91 GiB 2990.27 GB)
Array Size : 8760566784 (8354.73 GiB 8970.82 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : f8839952:eaba2e9c:c2c401d4:3e0592a5
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Jan 4 13:34:53 2018
Checksum : 59013634 - correct
Events : 81186
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : AAAA ('A' == active, '.' == missing)
mdadm: No md superblock detected on /dev/sdc4.
/dev/sdd:
MBR Magic : aa55
Partition[0] : 4294967295 sectors at 1 (type ee)
/dev/sdd1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 437e4abb:c7ac46f1:ef8b2976:94921060
Name : arrayname:0
Creation Time : Mon Dec 7 08:31:31 2015
Raid Level : raid1
Raid Devices : 4
Avail Dev Size : 3901440 (1905.32 MiB 1997.54 MB)
Array Size : 1950656 (1905.26 MiB 1997.47 MB)
Used Dev Size : 3901312 (1905.26 MiB 1997.47 MB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 4823f0b8:8e0d3ac3:e312c219:29f76622
Update Time : Thu Jan 4 12:00:45 2018
Checksum : cb64bae5 - correct
Events : 215
Device Role : Active device 1
Array State : AAAA ('A' == active, '.' == missing)
mdadm: No md superblock detected on /dev/sdd2.
/dev/sdd3:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : c7303f62:d848d424:269581c8:83a045ec
Name : ubuntu:2
Creation Time : Sun Feb 5 23:39:58 2017
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 5840377856 (2784.91 GiB 2990.27 GB)
Array Size : 8760566784 (8354.73 GiB 8970.82 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 875a0dbd:965a9986:1b78eb3d:e15fee50
Internal Bitmap : 8 sectors from superblock
Update Time : Thu Jan 4 13:34:53 2018
Checksum : c325ba6d - correct
Events : 81186
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 3
Array State : AAAA ('A' == active, '.' == missing)
mdadm: No md superblock detected on /dev/sdd4.
Here's mdadm --detail if needed:
user@machinename:~$ sudo mdadm --detail /dev/md2
/dev/md2:
Version : 1.2
Creation Time : Sun Feb 5 23:39:58 2017
Raid Level : raid5
Array Size : 8760566784 (8354.73 GiB 8970.82 GB)
Used Dev Size : 2920188928 (2784.91 GiB 2990.27 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Thu Jan 4 13:31:21 2018
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Name : ubuntu:2
UUID : c7303f62:d848d424:269581c8:83a045ec
Events : 81186
Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
4 8 19 1 active sync /dev/sdb3
2 8 35 2 active sync /dev/sdc3
5 8 51 3 active sync /dev/sdd3
user@machinename:~$ sudo mdadm --detail /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Mon Dec 7 08:31:31 2015
Raid Level : raid1
Array Size : 1950656 (1905.26 MiB 1997.47 MB)
Used Dev Size : 1950656 (1905.26 MiB 1997.47 MB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Thu Jan 4 12:00:45 2018
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0
Name : arrayname:0
UUID : 437e4abb:c7ac46f1:ef8b2976:94921060
Events : 215
Number Major Minor RaidDevice State
0 8 1 0 active sync /dev/sda1
5 8 49 1 active sync /dev/sdd1
4 8 17 2 active sync /dev/sdb1
2 8 33 3 active sync /dev/sdc1
next prev parent reply other threads:[~2018-01-04 13:39 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-07 7:48 SMART detects pending sectors; take offline? Alexander Shenkin
2017-10-07 8:21 ` Carsten Aulbert
2017-10-07 10:05 ` Alexander Shenkin
2017-10-07 17:29 ` Wols Lists
2017-10-08 9:19 ` Alexander Shenkin
2017-10-08 9:49 ` Wols Lists
2017-10-09 20:16 ` Phil Turmel
2017-10-10 9:00 ` Alexander Shenkin
2017-10-10 9:11 ` Reindl Harald
2017-10-10 9:56 ` Alexander Shenkin
2017-10-10 12:55 ` Phil Turmel
2017-10-11 10:31 ` Alexander Shenkin
2017-10-11 17:10 ` Phil Turmel
2017-10-12 9:50 ` Alexander Shenkin
2017-10-12 11:01 ` Wols Lists
2017-10-12 13:04 ` Phil Turmel
2017-10-12 13:16 ` Alexander Shenkin
2017-10-12 13:21 ` Mark Knecht
2017-10-12 15:16 ` Edward Kuns
2017-10-12 15:52 ` Edward Kuns
2017-10-15 14:41 ` Alexander Shenkin
2017-12-18 15:51 ` Alexander Shenkin
2017-12-18 16:09 ` Phil Turmel
2017-12-19 10:35 ` Alexander Shenkin
2017-12-19 12:02 ` Phil Turmel
2017-12-21 11:28 ` Alexander Shenkin
2017-12-21 11:38 ` Reindl Harald
2017-12-23 3:14 ` Brad Campbell
2018-01-03 12:44 ` Alexander Shenkin
2018-01-03 13:26 ` Brad Campbell
2018-01-03 13:50 ` Alexander Shenkin
2018-01-03 15:53 ` Phil Turmel
2018-01-03 15:59 ` Alexander Shenkin
2018-01-03 16:02 ` Phil Turmel
2018-01-04 10:37 ` Alexander Shenkin
2018-01-04 12:28 ` Alexander Shenkin
2018-01-04 13:16 ` Brad Campbell
2018-01-04 13:39 ` Alexander Shenkin [this message]
2018-01-05 5:20 ` Brad Campbell
2018-01-05 5:25 ` Brad Campbell
2018-01-05 10:10 ` Alexander Shenkin
2018-01-05 10:32 ` Brad Campbell
2018-01-05 13:50 ` Phil Turmel
2018-01-05 14:01 ` Alexander Shenkin
2018-01-05 15:59 ` Wols Lists
2017-10-12 15:19 ` Kai Stian Olstad
2017-10-10 22:23 ` josh
2017-10-11 6:23 ` Alexander Shenkin
2017-10-10 9:21 ` Wols Lists
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