* Debian jessie - RAID 6 reshape - making no progress after >48 hours
@ 2015-10-14 17:10 Phil Reynolds
2015-10-15 7:09 ` Mikael Abrahamsson
0 siblings, 1 reply; 3+ messages in thread
From: Phil Reynolds @ 2015-10-14 17:10 UTC (permalink / raw)
To: linux-raid
I have recently tried to add 4 additional devices to a RAID 6 array,
with this command:
mdadm -G /dev/md1 -n 8 -a /dev/sdb2 /dev/sdf2 /dev/sdg2 /dev/sdh2
Output from the command, I do not have, but it is what I would take as
normal - it confirmed what I had asked with no error.
dmesg | grep -w md shows this:
[ 2.339195] md: bind<sde2>
[ 2.339957] md: bind<sdc1>
[ 2.341128] md: bind<sdd2>
[ 2.342079] md: bind<sdc3>
[ 2.342735] md: bind<sdd3>
[ 2.343667] md: bind<sdc2>
[ 2.344923] md: bind<sdd1>
[ 2.345939] md: bind<sde1>
[ 2.347212] md: bind<sde3>
[ 3.413622] md: bind<sda2>
[ 3.660395] md: raid6 personality registered for level 6
[ 3.660396] md: raid5 personality registered for level 5
[ 3.660397] md: raid4 personality registered for level 4
[ 3.660548] md/raid:md1: device sda2 operational as raid disk 0
[ 3.660550] md/raid:md1: device sdc2 operational as raid disk 1
[ 3.660551] md/raid:md1: device sdd2 operational as raid disk 2
[ 3.660552] md/raid:md1: device sde2 operational as raid disk 3
[ 3.660844] md/raid:md1: allocated 0kB
[ 3.660862] md/raid:md1: raid level 6 active with 4 out of 4
devices, algorithm 2 [ 3.731726] md: bind<sda3>
[ 3.733039] md: raid0 personality registered for level 0
[ 3.733168] md/raid0:md2: md_size is 234129408 sectors.
[ 3.733170] md: RAID0 configuration for md2 - 1 zone
[ 3.733171] md: zone0=[sda3/sdd3/sde3]
[ 3.739588] md: bind<sda1>
[ 3.759253] md: raid1 personality registered for level 1
[ 3.759429] md/raid1:md0: active with 4 out of 4 mirrors
[ 3.918565] md: array md3 already has disks!
[ 3.918697] md: bind<md2>
[ 3.919332] md: linear personality registered for level -1
[ 2733.499792] md: bind<sdb1>
[ 2735.135587] md: bind<sdf1>
[ 2735.256588] md: bind<sdg1>
[ 2735.402403] md: could not open unknown-block(8,81).
[ 2735.402412] md: md_import_device returned -16
[ 2735.402428] md: could not open unknown-block(8,81).
[ 2735.402432] md: md_import_device returned -16
[ 2735.447468] md: bind<sdh1>
[ 2735.741173] md: recovery of RAID array md0
[ 2735.741174] md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
[ 2735.741175] md: using maximum available idle IO bandwidth (but not
more than 200000 KB/sec) for recovery.
[ 2735.741183] md: using 128k
window, over a total of 96256k.
[ 2745.098791] md: md0: recovery done.
[ 2779.774452] md: bind<sdb2>
[ 2779.887067] md: bind<sdf2>
[ 2780.051949] md: bind<sdg2>
[ 2780.162323] md: bind<sdh2>
[ 2780.559396] md: reshape of RAID array md1
[ 2780.559399] md: minimum _guaranteed_ speed: 1000 KB/sec/disk.
[ 2780.559400] md: using maximum available idle IO bandwidth (but not
more than 200000 KB/sec) for reshape.
[ 2780.559408] md: using 128k window, over a total of 205077632k.
(note: I have already tried adjusting the minimum speed)
/proc/mdstat is looking like this:
Personalities : [raid6] [raid5] [raid4] [raid0] [raid1] [linear]
md2 : active raid0 sda3[0] sde3[2] sdd3[1]
117064704 blocks super 1.2 512k chunks
md3 : active linear md2[0] sdc3[1]
400277156 blocks super 1.2 0k rounding
md0 : active raid1 sdh1[4] sdg1[5] sdf1[6] sdb1[7] sda1[0] sde1[3]
sdd1[1] sdc1[ 2]
96256 blocks [8/8] [UUUUUUUU]
bitmap: 0/12 pages [0KB], 4KB chunk
md1 : active raid6 sdh2[4] sdg2[5] sdf2[6] sdb2[7] sda2[0] sdc2[1]
sdd2[2] sde2[ 3]
410155264 blocks super 0.91 level 6, 64k chunk, algorithm 2 [8/8]
[UUUUUUU U]
[>....................] reshape = 0.0% (0/205077632)
finish=39282834032. 1min speed=0K/sec
bitmap: 10/196 pages [40KB], 512KB chunk
unused devices: <none>
mdadm --detail /dev/md1 gives:
/dev/md1:
Version : 0.91
Creation Time : Sat Oct 4 15:01:57 2008
Raid Level : raid6
Array Size : 410155264 (391.15 GiB 420.00 GB)
Used Dev Size : 205077632 (195.58 GiB 210.00 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 1
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Wed Oct 14 18:09:32 2015
State : clean, reshaping
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
Reshape Status : 0% complete
Delta Devices : 4, (4->8)
UUID : 7b4ddd0f:d04e8dbf:93c13954:ca72c56a
Events : 0.5558446
Number Major Minor RaidDevice State
0 8 2 0 active sync /dev/sda2
1 8 34 1 active sync /dev/sdc2
2 8 50 2 active sync /dev/sdd2
3 8 66 3 active sync /dev/sde2
4 8 114 4 active sync /dev/sdh2
5 8 98 5 active sync /dev/sdg2
6 8 82 6 active sync /dev/sdf2
7 8 18 7 active sync /dev/sdb2
What can I safely do to move this along?
--
Phil Reynolds
mail: phil@tinsleyviaduct.com
Web: http://phil.tinsleyviaduct.com/
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Debian jessie - RAID 6 reshape - making no progress after >48 hours
2015-10-14 17:10 Debian jessie - RAID 6 reshape - making no progress after >48 hours Phil Reynolds
@ 2015-10-15 7:09 ` Mikael Abrahamsson
2015-10-15 10:08 ` Alexander Afonyashin
0 siblings, 1 reply; 3+ messages in thread
From: Mikael Abrahamsson @ 2015-10-15 7:09 UTC (permalink / raw)
To: Phil Reynolds; +Cc: linux-raid
On Wed, 14 Oct 2015, Phil Reynolds wrote:
> What can I safely do to move this along?
Please check the mailing list archives from the past months, you are not
alone in having this problem. Do not reboot your machine or stop the
array unless you absolutely need to, it might be possible to just issue
--continue to the array.
--
Mikael Abrahamsson email: swmike@swm.pp.se
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Debian jessie - RAID 6 reshape - making no progress after >48 hours
2015-10-15 7:09 ` Mikael Abrahamsson
@ 2015-10-15 10:08 ` Alexander Afonyashin
0 siblings, 0 replies; 3+ messages in thread
From: Alexander Afonyashin @ 2015-10-15 10:08 UTC (permalink / raw)
To: Mikael Abrahamsson; +Cc: Phil Reynolds, Linux-RAID
Hi,
It seems that --backup-file option is missed.
Regards,
Alexander
On Thu, Oct 15, 2015 at 10:09 AM, Mikael Abrahamsson <swmike@swm.pp.se> wrote:
> On Wed, 14 Oct 2015, Phil Reynolds wrote:
>
>> What can I safely do to move this along?
>
>
> Please check the mailing list archives from the past months, you are not
> alone in having this problem. Do not reboot your machine or stop the array
> unless you absolutely need to, it might be possible to just issue --continue
> to the array.
>
> --
> Mikael Abrahamsson email: swmike@swm.pp.se
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-10-15 10:08 UTC | newest]
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2015-10-14 17:10 Debian jessie - RAID 6 reshape - making no progress after >48 hours Phil Reynolds
2015-10-15 7:09 ` Mikael Abrahamsson
2015-10-15 10:08 ` Alexander Afonyashin
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