* RAID6 won't reassemble after disk controller failure
@ 2015-03-25 15:19 Scott Sinno
2015-03-25 15:22 ` Mikael Abrahamsson
0 siblings, 1 reply; 8+ messages in thread
From: Scott Sinno @ 2015-03-25 15:19 UTC (permalink / raw)
To: linux-raid
Cc: Vaughan, Garrison (GSFC-606.2)[INTERNATIONAL TECHNOLOGY COALITION, INC]
JBOD controller failed this morning - we've replaced it, and all
drives are being presented to the system again, however 'mdadm' refuses
to assemble the ARRAY. I've tried assembling with '--force' flags but
it still won't...any help most appreciated. I'm guessing I'll need to
recreate with '--assemble-clean'
[root@dsfs01 ~]cat /etc/redhat-release
CentOS release 6.6 (Final)
[root@dsfs01 ~]mdadm --version
mdadm - v3.3 - 3rd September 2013
[root@dsfs01 ~]uname -r
3.14.33
[root@dsfs01 ~]mdadm -A --force --verbose /dev/md10 /dev/sdbj /dev/sdbk
/dev/sdbl /dev/sdbm /dev/sdbn /dev/sdbo /dev/sdbp /dev/sdbq /dev/sdbi
/dev/sdbr /dev/sdbs /dev/sdbt
mdadm: looking for devices for /dev/md10
mdadm: /dev/sdbj is identified as a member of /dev/md10, slot 0.
mdadm: /dev/sdbk is identified as a member of /dev/md10, slot 1.
mdadm: /dev/sdbl is identified as a member of /dev/md10, slot 2.
mdadm: /dev/sdbm is identified as a member of /dev/md10, slot 3.
mdadm: /dev/sdbn is identified as a member of /dev/md10, slot 4.
mdadm: /dev/sdbo is identified as a member of /dev/md10, slot 5.
mdadm: /dev/sdbp is identified as a member of /dev/md10, slot 6.
mdadm: /dev/sdbq is identified as a member of /dev/md10, slot 7.
mdadm: /dev/sdbi is identified as a member of /dev/md10, slot 8.
mdadm: /dev/sdbr is identified as a member of /dev/md10, slot 9.
mdadm: /dev/sdbs is identified as a member of /dev/md10, slot 10.
mdadm: /dev/sdbt is identified as a member of /dev/md10, slot 11.
mdadm: added /dev/sdbk to /dev/md10 as 1
mdadm: added /dev/sdbl to /dev/md10 as 2
mdadm: added /dev/sdbm to /dev/md10 as 3
mdadm: added /dev/sdbn to /dev/md10 as 4
mdadm: added /dev/sdbo to /dev/md10 as 5
mdadm: added /dev/sdbp to /dev/md10 as 6 (possibly out of date)
mdadm: added /dev/sdbq to /dev/md10 as 7 (possibly out of date)
mdadm: added /dev/sdbi to /dev/md10 as 8 (possibly out of date)
mdadm: added /dev/sdbr to /dev/md10 as 9 (possibly out of date)
mdadm: added /dev/sdbs to /dev/md10 as 10 (possibly out of date)
mdadm: added /dev/sdbt to /dev/md10 as 11 (possibly out of date)
mdadm: added /dev/sdbj to /dev/md10 as 0
mdadm -E /dev/sdbj
/dev/sdbj:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : clean
Device UUID : 3bd0e7f2:cfc24add:122a7354:049efe95
Update Time : Wed Mar 25 08:21:34 2015
Checksum : 4a952f6a - correct
Events : 7641
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 0
Array State : AAAAAA...... ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbk
/dev/sdbk:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : clean
Device UUID : 4ebd5ec0:24367c71:bd5d3b52:3910ebcb
Update Time : Wed Mar 25 08:21:34 2015
Checksum : dfec35ad - correct
Events : 7641
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 1
Array State : AAAA........ ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbl
/dev/sdbl:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : clean
Device UUID : 8cf70b24:9cd55339:08f408d7:7719469b
Update Time : Wed Mar 25 08:21:34 2015
Checksum : 5f99aeed - correct
Events : 7641
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 2
Array State : AAAA........ ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbm
/dev/sdbm:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : clean
Device UUID : 59816854:0a6eb50b:b8cb756e:497c2d77
Update Time : Wed Mar 25 08:21:34 2015
Checksum : d5ac0baa - correct
Events : 7641
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 3
Array State : AAAA........ ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbn
/dev/sdbn:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : active
Device UUID : 52c08937:e782b635:05d7f31c:7e7fa2ae
Update Time : Wed Mar 25 08:21:30 2015
Checksum : c8e56e1f - correct
Events : 7641
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 4
Array State : AAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbo
/dev/sdbo:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : active
Device UUID : 2902c7b0:e0e0b31e:70e94404:1d8f10c4
Update Time : Wed Mar 25 08:21:30 2015
Checksum : 27df2ffb - correct
Events : 7641
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 5
Array State : AAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbp
/dev/sdbp:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : active
Device UUID : d83bf256:a2f59330:e3209784:ee201d00
Update Time : Wed Mar 25 08:21:30 2015
Checksum : 9c4947ad - correct
Events : 7638
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 6
Array State : AAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbq
/dev/sdbq:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : active
Device UUID : d2556b61:a6fa2608:7ad69e55:ff09a3f7
Update Time : Wed Mar 25 08:21:30 2015
Checksum : 46e30555 - correct
Events : 7638
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 7
Array State : AAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbi
/dev/sdbi:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : active
Device UUID : 4a19a417:b2c5909e:496d5266:23228c19
Update Time : Wed Mar 25 08:21:30 2015
Checksum : c62242cc - correct
Events : 7638
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 8
Array State : AAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbr
/dev/sdbr:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : active
Device UUID : 1074ca9b:d9db5522:17055a3c:b6e69869
Update Time : Wed Mar 25 08:21:30 2015
Checksum : f422101b - correct
Events : 7638
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 9
Array State : AAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbs
/dev/sdbs:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : active
Device UUID : 13afb79f:7d24a231:b5e165ab:6faff1c7
Update Time : Wed Mar 25 08:21:30 2015
Checksum : d4c0391b - correct
Events : 7638
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 10
Array State : AAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
mdadm -E /dev/sdbt
/dev/sdbt:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 903cfc6d:921b0a84:c0b4bc7e:27e28c86
Name : dsfs01:10 (local to host dsfs01)
Creation Time : Tue Nov 5 03:37:14 2013
Raid Level : raid6
Raid Devices : 12
Avail Dev Size : 7813775024 (3725.90 GiB 4000.65 GB)
Array Size : 39068871680 (37258.98 GiB 40006.52 GB)
Used Dev Size : 7813774336 (3725.90 GiB 4000.65 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
Unused Space : before=262064 sectors, after=688 sectors
State : active
Device UUID : 3cc36ae5:6965ba18:d5ed98bb:ec757657
Update Time : Wed Mar 25 08:21:30 2015
Checksum : a14360ce - correct
Events : 7638
Layout : left-symmetric
Chunk Size : 256K
Device Role : Active device 11
Array State : AAAAAAAAAAAA ('A' == active, '.' == missing, 'R' ==
replacing)
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: RAID6 won't reassemble after disk controller failure
2015-03-25 15:19 RAID6 won't reassemble after disk controller failure Scott Sinno
@ 2015-03-25 15:22 ` Mikael Abrahamsson
2015-03-25 15:26 ` Scott Sinno
0 siblings, 1 reply; 8+ messages in thread
From: Mikael Abrahamsson @ 2015-03-25 15:22 UTC (permalink / raw)
To: Scott Sinno
Cc: linux-raid,
Vaughan, Garrison (GSFC-606.2)[INTERNATIONAL TECHNOLOGY COALITION, INC]
On Wed, 25 Mar 2015, Scott Sinno wrote:
> JBOD controller failed this morning - we've replaced it, and all
> drives are being presented to the system again, however 'mdadm' refuses
> to assemble the ARRAY. I've tried assembling with '--force' flags but
> it still won't...any help most appreciated. I'm guessing I'll need to
> recreate with '--assemble-clean'
I would recommend you to not do that unless there is no other way out.
Please post dmesg output from the --assemble --force attempt, it might
contain reason why the assembly was unsuccessful.
--
Mikael Abrahamsson email: swmike@swm.pp.se
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: RAID6 won't reassemble after disk controller failure
2015-03-25 15:22 ` Mikael Abrahamsson
@ 2015-03-25 15:26 ` Scott Sinno
2015-03-25 15:29 ` Scott Sinno
2015-03-25 15:30 ` Mikael Abrahamsson
0 siblings, 2 replies; 8+ messages in thread
From: Scott Sinno @ 2015-03-25 15:26 UTC (permalink / raw)
To: Mikael Abrahamsson
Cc: linux-raid,
Vaughan, Garrison (GSFC-606.2)[INTERNATIONAL TECHNOLOGY COALITION, INC]
Mikael Abrahamsson wrote:
> I would recommend you to not do that unless there is no other way out.
Wholeheartedly agreed, thus looking to this list for guidance first :-)
>
> Please post dmesg output from the --assemble --force attempt, it might
> contain reason why the assembly was unsuccessful.
>
It doesn't appear to be very telling. Note that per the provided
'-E'(examine) output, event count is off a bit on some of the drives,
and several report 'missing'
#dmesg output
md: bind<sdbk>
md: bind<sdbl>
md: bind<sdbm>
md: bind<sdbn>
md: bind<sdbo>
md: bind<sdbp>
md: bind<sdbq>
md: bind<sdbi>
md: bind<sdbr>
md: bind<sdbs>
md: bind<sdbt>
md: bind<sdbj>
md: md10 stopped.
md: unbind<sdbj>
md: export_rdev(sdbj)
md: unbind<sdbt>
md: export_rdev(sdbt)
md: unbind<sdbs>
md: export_rdev(sdbs)
md: unbind<sdbr>
md: export_rdev(sdbr)
md: unbind<sdbi>
md: export_rdev(sdbi)
md: unbind<sdbq>
md: export_rdev(sdbq)
md: unbind<sdbp>
md: export_rdev(sdbp)
md: unbind<sdbo>
md: export_rdev(sdbo)
md: unbind<sdbn>
md: export_rdev(sdbn)
md: unbind<sdbm>
md: export_rdev(sdbm)
md: unbind<sdbl>
md: export_rdev(sdbl)
md: unbind<sdbk>
md: export_rdev(sdbk)
md: md10 stopped.
md: bind<sdbk>
md: bind<sdbl>
md: bind<sdbm>
md: bind<sdbn>
md: bind<sdbo>
md: bind<sdbp>
md: bind<sdbq>
md: bind<sdbi>
md: bind<sdbr>
md: bind<sdbs>
md: bind<sdbt>
md: bind<sdbj>
md: md10 stopped.
md: unbind<sdbj>
md: export_rdev(sdbj)
md: unbind<sdbt>
md: export_rdev(sdbt)
md: unbind<sdbs>
md: export_rdev(sdbs)
md: unbind<sdbr>
md: export_rdev(sdbr)
md: unbind<sdbi>
md: export_rdev(sdbi)
md: unbind<sdbq>
md: export_rdev(sdbq)
md: unbind<sdbp>
md: export_rdev(sdbp)
md: unbind<sdbo>
md: export_rdev(sdbo)
md: unbind<sdbn>
md: export_rdev(sdbn)
md: unbind<sdbm>
md: export_rdev(sdbm)
md: unbind<sdbl>
md: export_rdev(sdbl)
md: unbind<sdbk>
md: export_rdev(sdbk)
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: RAID6 won't reassemble after disk controller failure
2015-03-25 15:26 ` Scott Sinno
@ 2015-03-25 15:29 ` Scott Sinno
2015-03-25 15:30 ` Mikael Abrahamsson
1 sibling, 0 replies; 8+ messages in thread
From: Scott Sinno @ 2015-03-25 15:29 UTC (permalink / raw)
To: Mikael Abrahamsson
Cc: linux-raid,
Vaughan, Garrison (GSFC-606.2)[INTERNATIONAL TECHNOLOGY COALITION, INC]
Scott Sinno wrote:
> It doesn't appear to be very telling. Note that per the provided
> '-E'(examine) output, event count is off a bit on some of the drives,
> and several report 'missing'
Clarification - the drives themselves are not 'missing', they're healthy
and present, 'mdadm -E' reports some components missing in the 'Array
State' field.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: RAID6 won't reassemble after disk controller failure
2015-03-25 15:26 ` Scott Sinno
2015-03-25 15:29 ` Scott Sinno
@ 2015-03-25 15:30 ` Mikael Abrahamsson
2015-03-25 15:43 ` Scott Sinno
1 sibling, 1 reply; 8+ messages in thread
From: Mikael Abrahamsson @ 2015-03-25 15:30 UTC (permalink / raw)
To: Scott Sinno
Cc: linux-raid,
Vaughan, Garrison (GSFC-606.2)[INTERNATIONAL TECHNOLOGY COALITION, INC]
On Wed, 25 Mar 2015, Scott Sinno wrote:
> It doesn't appear to be very telling. Note that per the provided
> '-E'(examine) output, event count is off a bit on some of the drives,
> and several report 'missing'
Ok, next thing to recommend would be to get the latest mdadm from Niels
git repo and try with that one. I know some who have fixed similar
problems to yours by doing this.
"git clone git://neil.brown.name/mdadm mdadm" and compile that and see if
--assemble --force works.
--
Mikael Abrahamsson email: swmike@swm.pp.se
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: RAID6 won't reassemble after disk controller failure
2015-03-25 15:30 ` Mikael Abrahamsson
@ 2015-03-25 15:43 ` Scott Sinno
2015-03-25 16:09 ` Mikael Abrahamsson
0 siblings, 1 reply; 8+ messages in thread
From: Scott Sinno @ 2015-03-25 15:43 UTC (permalink / raw)
To: Mikael Abrahamsson
Cc: linux-raid,
Vaughan, Garrison (GSFC-606.2)[INTERNATIONAL TECHNOLOGY COALITION, INC]
Mikael Abrahamsson wrote:
> Ok, next thing to recommend would be to get the latest mdadm from Niels
> git repo and try with that one. I know some who have fixed similar
> problems to yours by doing this.
>
> "git clone git://neil.brown.name/mdadm mdadm" and compile that and see
> if --assemble --force works.
>
That constitutes a huge step forward. Was able to assemble the array
with all 12 drives using this binary! Thanks so much!!!
However, after stopping and re-assembling the array, using the 'stock'
CentOS version, it yields this complaint unless '--force' is also used.
I'm inclined to believe I should simply fail /dev/sdbt and move on, yes?
[root@dsfs01 ~/mdadm]./mdadm -A /dev/md10
mdadm: ignoring /dev/sdbk as it reports /dev/sdbt as failed
mdadm: ignoring /dev/sdbl as it reports /dev/sdbt as failed
mdadm: ignoring /dev/sdbm as it reports /dev/sdbt as failed
mdadm: /dev/md10 assembled from 9 drives - not enough to start the array.
[root@dsfs01 ~/mdadm]mdadm
[root@dsfs01 ~/mdadm]./mdadm -A --force /dev/md10
mdadm: /dev/md10 has been started with 12 drives.
[root@dsfs01 ~/mdadm]mdadm -S /dev/md10
mdadm: stopped /dev/md10
[root@dsfs01 ~/mdadm]mdadm -A /dev/md10
mdadm: ignoring /dev/sdbk as it reports /dev/sdbt as failed
mdadm: ignoring /dev/sdbl as it reports /dev/sdbt as failed
mdadm: ignoring /dev/sdbm as it reports /dev/sdbt as failed
mdadm: /dev/md10 assembled from 9 drives - not enough to start the array.
[root@dsfs01 ~/mdadm]mdadm -A --force /dev/md10
mdadm: /dev/md10 has been started with 12 drives.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: RAID6 won't reassemble after disk controller failure
2015-03-25 15:43 ` Scott Sinno
@ 2015-03-25 16:09 ` Mikael Abrahamsson
2015-03-25 16:16 ` Scott Sinno
0 siblings, 1 reply; 8+ messages in thread
From: Mikael Abrahamsson @ 2015-03-25 16:09 UTC (permalink / raw)
To: Scott Sinno
Cc: linux-raid,
Vaughan, Garrison (GSFC-606.2)[INTERNATIONAL TECHNOLOGY COALITION, INC]
On Wed, 25 Mar 2015, Scott Sinno wrote:
> Mikael Abrahamsson wrote:
>> Ok, next thing to recommend would be to get the latest mdadm from Niels
>> git repo and try with that one. I know some who have fixed similar
>> problems to yours by doing this.
>>
>> "git clone git://neil.brown.name/mdadm mdadm" and compile that and see
>> if --assemble --force works.
>>
>
> That constitutes a huge step forward. Was able to assemble the array
> with all 12 drives using this binary! Thanks so much!!!
>
> However, after stopping and re-assembling the array, using the 'stock'
> CentOS version, it yields this complaint unless '--force' is also used.
> I'm inclined to believe I should simply fail /dev/sdbt and move on, yes?
I will not make any more recommendations on how to proceed with this, it
sounds like failing sdbt houldn't be needed and if I were you, I would
assemble the array, keep it running until someone else who knows more can
potentially help you with what might be wrong with your older version of
mdadm (or the newer one might not do everything it should, or it's
something your kernel is doing wrong).
--
Mikael Abrahamsson email: swmike@swm.pp.se
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: RAID6 won't reassemble after disk controller failure
2015-03-25 16:09 ` Mikael Abrahamsson
@ 2015-03-25 16:16 ` Scott Sinno
0 siblings, 0 replies; 8+ messages in thread
From: Scott Sinno @ 2015-03-25 16:16 UTC (permalink / raw)
To: Mikael Abrahamsson
Cc: linux-raid,
Vaughan, Garrison (GSFC-606.2)[INTERNATIONAL TECHNOLOGY COALITION, INC]
Mikael Abrahamsson wrote:
> I will not make any more recommendations on how to proceed with this, it
> sounds like failing sdbt houldn't be needed and if I were you, I would
> assemble the array, keep it running until someone else who knows more
> can potentially help you with what might be wrong with your older
> version of mdadm (or the newer one might not do everything it should, or
> it's something your kernel is doing wrong).
>
Understood. Many thanks again for the assist!!! I'm certainly intent
on rolling out a newer version of mdadm now..will proceed on that
endeavor with prudent caution.
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2015-03-25 16:16 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-03-25 15:19 RAID6 won't reassemble after disk controller failure Scott Sinno
2015-03-25 15:22 ` Mikael Abrahamsson
2015-03-25 15:26 ` Scott Sinno
2015-03-25 15:29 ` Scott Sinno
2015-03-25 15:30 ` Mikael Abrahamsson
2015-03-25 15:43 ` Scott Sinno
2015-03-25 16:09 ` Mikael Abrahamsson
2015-03-25 16:16 ` Scott Sinno
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