Yes I know this is a common occurrence, but it's bitten my test system.
I've now got an array converting from raid1 to raid5, that will build
but won't run, and won't grow.
I suspect it's a similar problem to the one that bit Fedora - in that
"mdadm --grow --continue" comes back with no error messages, but I can
find no evidence that a background mdadm is actually running. As
mentioned earlier, AppArmor is disabled, so I don't know why it won't
work. Any ideas?
I also can't run the array :-(
Note that it's a test vm specifically for playing with raid, so no data
is at stake, but equally, these things shouldn't fail and land you with
a non-working array (and yes, I have downloaded the latest mdadm -
unfortunately I have been mix-n-matching the distro and bleeding-edge
versions).
Cheers,
Wol
/dev/md127:
Version : 1.2
Creation Time : Fri Aug 5 18:16:24 2016
Raid Level : raid5
Used Dev Size : 8380416 (7.99 GiB 8.58 GB)
Raid Devices : 3
Total Devices : 4
Persistence : Superblock is persistent
Update Time : Sun Aug 7 01:20:23 2016
State : active, Not Started
Active Devices : 3
Working Devices : 4
Failed Devices : 0
Spare Devices : 1
Layout : left-symmetric
Chunk Size : 64K
Delta Devices : 1, (2->3)
Name : kanga:testarray (local to host kanga)
UUID : cf52ebc0:886a35cd:688274b4:3f16096c
Events : 157
Number Major Minor RaidDevice State
4 8 16 0 active sync /dev/sdb
1 8 32 1 active sync /dev/sdc
3 8 64 2 active sync /dev/sde
2 8 48 - spare /dev/sdd
/dev/sdb:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x44
Array UUID : cf52ebc0:886a35cd:688274b4:3f16096c
Name : kanga:testarray (local to host kanga)
Creation Time : Fri Aug 5 18:16:24 2016
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 16760832 (7.99 GiB 8.58 GB)
Array Size : 16760832 (15.98 GiB 17.16 GB)
Data Offset : 16384 sectors
New Offset : 16128 sectors
Super Offset : 8 sectors
State : clean
Device UUID : e9e6426d:d33b9c14:b8bce7e8:780f848e
Reshape pos'n : 0
Delta Devices : 1 (2->3)
Update Time : Sun Aug 7 01:20:23 2016
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : 41eb0fd7 - correct
Events : 157
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 0
Array State : AAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdc:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x44
Array UUID : cf52ebc0:886a35cd:688274b4:3f16096c
Name : kanga:testarray (local to host kanga)
Creation Time : Fri Aug 5 18:16:24 2016
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 16760832 (7.99 GiB 8.58 GB)
Array Size : 16760832 (15.98 GiB 17.16 GB)
Data Offset : 16384 sectors
New Offset : 16128 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 9566866f:cc4cca0d:d8b54faf:f44e2e97
Reshape pos'n : 0
Delta Devices : 1 (2->3)
Update Time : Sun Aug 7 01:20:23 2016
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : c6ed915 - correct
Events : 157
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 1
Array State : AAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdd:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x44
Array UUID : cf52ebc0:886a35cd:688274b4:3f16096c
Name : kanga:testarray (local to host kanga)
Creation Time : Fri Aug 5 18:16:24 2016
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 16760832 (7.99 GiB 8.58 GB)
Array Size : 16760832 (15.98 GiB 17.16 GB)
Data Offset : 16384 sectors
New Offset : 16128 sectors
Super Offset : 8 sectors
State : clean
Device UUID : fed79c82:8510d13a:496617f5:c1381778
Reshape pos'n : 0
Delta Devices : 1 (2->3)
Update Time : Sun Aug 7 01:20:23 2016
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : 733ca876 - correct
Events : 157
Layout : left-symmetric
Chunk Size : 64K
Device Role : spare
Array State : AAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sde:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : cf52ebc0:886a35cd:688274b4:3f16096c
Name : kanga:testarray (local to host kanga)
Creation Time : Fri Aug 5 18:16:24 2016
Raid Level : raid5
Raid Devices : 3
Avail Dev Size : 16760832 (7.99 GiB 8.58 GB)
Array Size : 16760832 (15.98 GiB 17.16 GB)
Data Offset : 16384 sectors
Super Offset : 8 sectors
Unused Space : before=16296 sectors, after=0 sectors
State : clean
Device UUID : 51271324:1b29e46a:521658dd:5747e61e
Reshape pos'n : 0
Delta Devices : 1 (2->3)
Update Time : Sun Aug 7 01:20:23 2016
Bad Block Log : 512 entries available at offset 72 sectors
Checksum : d3d5cfbd - correct
Events : 157
Layout : left-symmetric
Chunk Size : 64K
Device Role : Active device 2
Array State : AAA ('A' == active, '.' == missing, 'R' == replacing)
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