Looks like I have now another issue with journaled array that now fails
to assemble - with related command used to assembly it (whether it would
be mdadm --incremental called by udev, or manually from commandline)
hanged and unkillable.
The array was previously running with different journal that was later
replaced with different better disks. The journal device itself is
healthy and assembles fine. Assembling (the below dump is when mdadm vis
udev was doing it):
mdadm -D /dev/md126
/dev/md126:
Version : 1.1
Creation Time : Tue Mar 5 19:28:58 2019
Raid Level : raid5
Used Dev Size : 18446744073709551615
Raid Devices : 4
Total Devices : 5
Persistence : Superblock is persistent
Update Time : Sat May 9 09:34:58 2020
State : active, FAILED, Not Started
Active Devices : 4
Working Devices : 5
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 512K
Consistency Policy : journal
Name : xs22:r5_big (local to host xs22)
UUID : d5995d76:67d7fabd:05392f87:25a91a97
Events : 56283
Number Major Minor RaidDevice State
- 0 0 0 removed
- 0 0 1 removed
- 0 0 2 removed
- 0 0 3 removed
- 8 145 3 sync /dev/sdj1
- 8 129 2 sync /dev/sdi1
- 9 127 - spare /dev/md/xs22:r1_journal_big
- 8 113 1 sync /dev/sdh1
- 8 97 0 sync /dev/sdg1
mdadm -Esv:
ARRAY /dev/md/r1_journal_big level=raid1 metadata=1.1 num-devices=2
UUID=c18b3996:49b21f49:3ee18e92:a8240f7f name=xs22:r1_journal_big
devices=/dev/sdv1,/dev/sdu1
ARRAY /dev/md/r5_big level=raid5 metadata=1.1 num-devices=4
UUID=d5995d76:67d7fabd:05392f87:25a91a97 name=xs22:r5_big
spares=1
devices=/dev/md/xs22:r1_journal_big,/dev/sdg1,/dev/sdh1,/dev/sdj1,/dev/sdi1
When I was changing journal some time ago (successfully, everything was
working fine afterwards) this is what I did:
echo [write-through] >/sys/md126/md/journal_mode
mdadm /dev/md126 --fail /dev/md/r1_journal_big --remove
/dev/md/r1_journal_big
echo resync >/sys/md126/md/consistency_policy
# here i created new journal from new disks, the name was the same
mdadm --readonly /dev/md126
mdadm /dev/md126 --add-journal /dev/md/r1_journal_big
echo [write-back] >/sys/md126/md/journal_mode
# At this point mdadm confirmed everything went fine
After the reboot I'm in the situation as outlined above. Any suggestion
how to assemble this array now ?
