Hi, I have a 3 disk RAID 5 where one disk broke (/dev/sdb). /dev/sda1 has
/boot, /dev/sda2 is a RAID partition, /dev/sdb1 is a RAID partition, /dev/sdc1
is a RAID partition. In the process of moving disks around to recover two
unfortunate things occurred. The first is that my system stopped recognizing
the second disk (the one that had no /boot on it) which I have subsequently
added back into the array, and the second is that my system in emergency mode
doesn't have cryptsetup for opening the luks container and will not recognize
my USB ports. How do I get the system to open my disk up as before?
Attempting to boot gives, via journalctl:
"systemd-udevd[434]: Process '/sbin/partx -d --nr 1-1024 /dev/sdc' failed with
exit code 1." and
"systemd-udevd[426]: Process '/sbin/partx -d --nr 1-1024 /dev/sdb' failed with
exit code 1." and
"systemd-udevd[434]: inotify_add_watch(8, /dev/sdc1, 10) failed: No such file
or directory" and
"systemd-udevd[426]: Process '/sbin/mdadm -I /dev/sdb' failed with exit code
2." and
"systemd-udevd[434]: inotify_add_watch(8, /dev/sdb1, 10) failed: No such file
or directory"
Apparently the boot sequence is pre-emptively deleting sdb and sdc partitions
from /dev. When I execute:
"partx -a --nr 1-1024 /dev/sdb" and "partx -a --nr 1-1024 /deb/sdc" it
re-creates their first partitions device nodes.
Then I edit mdadm.conf (which is apparently automatically written by anaconda
each time I try to boot) to read:
"DEVICE /dev/sda2 /dev/sdb1 /dev/sdc1
MAILADDR root
HOMEHOST <system>
ARRAY /dev/md127 level=5 devices=/dev/sda2,/dev/sdb1,/dev/sdc1 metadata=1.2
UUID=f6224251:0ba59f55:05d9cdf4:98e79eca"
so I can execute:
"mdadm --stop /dev/md127" to stop the array with 1 disk and
"mdadm --assemble /dev/md127" to start the array with all 3 disks
RAID is recognized but now I'm stuck. What next for opening luks and then lvm?
Thanks.
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