Hi Raiders,
I had a raid5 array md10 with sd[abcd]10.
Eventually, sdd10 failed.
I did NOT do any mdadm --fail NOR mdadm --remove command.
What I did is comment out the line "ARRAY /dev/md10 ..." in
/etc/mdadm/mdadm.conf.
Then I powered off the server, replaced the disk sdd with a new one
and booted the system.
I examined the status with:
# cat /proc/mdstat
md10 : inactive sdb10[1]
1926247296 blocks
I stopped the array with:
# mdadm --stop /dev/md10
I tried to assemble the array with the 3 original disks like this
# mdadm --assemble /dev/md10 --verbose /dev/sda10 /dev/sdb10 /dev/sdc10
mdadm: looking for devices for /dev/md10
mdadm: /dev/sda10 is identified as a member of /dev/md10, slot 0.
mdadm: /dev/sdb10 is identified as a member of /dev/md10, slot 1.
mdadm: /dev/sdc10 is identified as a member of /dev/md10, slot 2.
mdadm: added /dev/sda10 to /dev/md10 as 0 (possibly out of date)
mdadm: added /dev/sdc10 to /dev/md10 as 2 (possibly out of date)
mdadm: no uptodate device for slot 3 of /dev/md10
mdadm: added /dev/sdb10 to /dev/md10 as 1
mdadm: /dev/md10 assembled from 1 drive - not enough to start the array.
I examined the status again with:
# cat /proc/mdstat
md10 : inactive sdb10[1](S) sdc10[2](S) sda10[0](S)
5778741888 blocks
Now I'm SCARED!
What does the (S) mean?
How do I reassemble my array and add the new sdd10 partition?
Thanks for your help
Regards
-------------------------
Santiago DIEZ
Quark Systems & CAOBA
23 rue du Buisson Saint-Louis, 75010 Paris
-------------------------
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