From: Yi Zhang <yizhan@redhat.com>
To: linux-raid@vger.kernel.org
Cc: songliubraving@fb.com, shli@fb.com, Jes.Sorensen@redhat.com
Subject: journal disk become the first of --detail list after fail/remove one disk
Date: Thu, 4 Aug 2016 06:52:12 -0400 (EDT) [thread overview]
Message-ID: <1933083404.11265226.1470307932889.JavaMail.zimbra@redhat.com> (raw)
In-Reply-To: <1597878292.11264554.1470307437177.JavaMail.zimbra@redhat.com>
Hi folks
patch[1] has move journal to end of --detail list, but I found after fail/remove the one of the disk,
the journal disk change to be the fisrt one, detailed steps pls refer[2]
[1]
commit 6fe4c6160399c94a15eda6092371e0ac9a38a4bc
Author: Song Liu <songliubraving@fb.com>
Date: Mon Dec 21 11:23:41 2015 -0800
move journal to end of --detail list
[2]
Reproduce steps
# uname -r
4.7.0
# mdadm --version
mdadm - v3.4-63-g52209d6 - 21st July 2016
# mdadm --create --run /dev/md0 --level 4 --metadata 1.2 --raid-devices 7 /dev/loop1 /dev/loop2 /dev/loop3 /dev/loop4 /dev/loop5 /dev/loop6 /dev/loop7 --write-journal /dev/loop0 --bitmap=internal --bitmap-chunk=64M --chunk 512
mdadm: array /dev/md0 started.
# mdadm --wait /dev/md0
# mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Thu Aug 4 18:42:19 2016
Raid Level : raid4
Array Size : 3139584 (2.99 GiB 3.21 GB)
Used Dev Size : 523264 (511.00 MiB 535.82 MB)
Raid Devices : 7
Total Devices : 8
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Thu Aug 4 18:42:34 2016
State : clean
Active Devices : 7
Working Devices : 8
Failed Devices : 0
Spare Devices : 1
Chunk Size : 512K
Name : dhcp-12-125.nay.redhat.com:0 (local to host dhcp-12-125.nay.redhat.com)
UUID : 29a267c2:04e91998:639e6eef:64ddbab0
Events : 20
Number Major Minor RaidDevice State
0 7 1 0 active sync /dev/loop1
1 7 2 1 active sync /dev/loop2
2 7 3 2 active sync /dev/loop3
3 7 4 3 active sync /dev/loop4
4 7 5 4 active sync /dev/loop5
5 7 6 5 active sync /dev/loop6
8 7 7 6 active sync /dev/loop7
7 7 0 - journal /dev/loop0
# mdadm /dev/md0 -f /dev/loop1
mdadm: set /dev/loop1 faulty in /dev/md0
# mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Thu Aug 4 18:42:19 2016
Raid Level : raid4
Array Size : 3139584 (2.99 GiB 3.21 GB)
Used Dev Size : 523264 (511.00 MiB 535.82 MB)
Raid Devices : 7
Total Devices : 8
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Thu Aug 4 18:43:07 2016
State : clean, degraded
Active Devices : 6
Working Devices : 7
Failed Devices : 1
Spare Devices : 1
Chunk Size : 512K
Name : dhcp-12-125.nay.redhat.com:0 (local to host dhcp-12-125.nay.redhat.com)
UUID : 29a267c2:04e91998:639e6eef:64ddbab0
Events : 22
Number Major Minor RaidDevice State
7 7 0 - journal /dev/loop0
1 7 2 1 active sync /dev/loop2
2 7 3 2 active sync /dev/loop3
3 7 4 3 active sync /dev/loop4
4 7 5 4 active sync /dev/loop5
5 7 6 5 active sync /dev/loop6
8 7 7 6 active sync /dev/loop7
0 7 1 - faulty /dev/loop1
# mdadm /dev/md0 -r /dev/loop1
mdadm: hot removed /dev/loop1 from /dev/md0
# mdadm -D /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Thu Aug 4 18:42:19 2016
Raid Level : raid4
Array Size : 3139584 (2.99 GiB 3.21 GB)
Used Dev Size : 523264 (511.00 MiB 535.82 MB)
Raid Devices : 7
Total Devices : 7
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Thu Aug 4 18:43:22 2016
State : clean, degraded
Active Devices : 6
Working Devices : 7
Failed Devices : 0
Spare Devices : 1
Chunk Size : 512K
Name : dhcp-12-125.nay.redhat.com:0 (local to host dhcp-12-125.nay.redhat.com)
UUID : 29a267c2:04e91998:639e6eef:64ddbab0
Events : 23
Number Major Minor RaidDevice State
7 7 0 - journal /dev/loop0
1 7 2 1 active sync /dev/loop2
2 7 3 2 active sync /dev/loop3
3 7 4 3 active sync /dev/loop4
4 7 5 4 active sync /dev/loop5
5 7 6 5 active sync /dev/loop6
8 7 7 6 active sync /dev/loop7
Best Regards,
Yi Zhang
next parent reply other threads:[~2016-08-04 10:52 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1597878292.11264554.1470307437177.JavaMail.zimbra@redhat.com>
2016-08-04 10:52 ` Yi Zhang [this message]
2016-08-04 11:34 ` journal disk become the first of --detail list after fail/remove one disk Adam Goryachev
2016-08-05 8:49 ` Guoqing Jiang
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