Hello RAIDers,
I have two large IDE disks, each partitioned identically, with each identical
partition combined to create an mdX device. I can't seem to get one partition
to come up; the other 7 are fine, but the root is not.
The raidtab is:
raiddev /dev/md0
raid-level 1
nr-raid-disks 2
nr-spare-disks 0
chunk-size 4
device /dev/hdc1
raid-disk 0
device /dev/hda1
raid-disk 1
<snip>
/proc/mdstat says:
<snip>
md1 : active raid1 ide/host0/bus0/target0/lun0/part2[0] ide/host0/bus1/target0/lun0/part2[1]
4003712 blocks [2/2] [UU]
md0 : active raid1 ide/host0/bus1/target0/lun0/part1[0]
4003648 blocks [2/1] [U_]
unused devices: <none>
The pattern is the same: IDE disks A and C arethe two parts. It seems on
md0 that disk A (/dev/hda1, or /dev/ide/host0/bus0/target0/lun0/part1) is
not active. Yet trying to raidhotadd it says:
# raidhotadd /dev/md0 /dev/hda1
/dev/md0: can not hot-add disk: invalid argument.
Or using the devfs filename:
# raidhotadd /dev/md0 /dev/ide/host0/bus0/target0/lun0/part1
/dev/md0: can not hot-add disk: invalid argument.
Sure enough, the dmesg log says:
md: trying to hot-add ide/host0/bus0/target0/lun0/part1 to md0 ...
md: can not import ide/host0/bus0/target0/lun0/part1, has active inodes!
md: error, md_import_device() returned -16
And checking /proc/mounts says:
/dev/root.old /initrd cramfs rw 0 0
/dev/ide/host0/bus0/target0/lun0/part1 / reiserfs rw 0 0
proc /proc proc rw 0 0
devpts /dev/pts devpts rw 0 0
/dev/md1 /usr reiserfs rw 0 0
/dev/md2 /var reiserfs rw 0 0
/dev/md3 /home reiserfs rw 0 0
none /dev devfs rw 0 0
/dev/md5 /usr/local reiserfs rw 0 0
/dev/md0 / reiserfs rw 0 0
So it appears that the root parition is mounted *twice*, once is a
raw disk, and once as md0. df says:
# df -k
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/md0 4003520 97616 3905904 3% /
/dev/md1 4003584 323320 3680264 9% /usr
/dev/md2 4003584 301300 3702284 8% /var
/dev/md3 4003520 1353040 2650480 34% /home
/dev/md5 62035860 16205828 45830032 27% /usr/local
/dev/md0 4003520 97616 3905904 3%
So it looks like the /dev/hda1 is not there by itself.
How can I unmount the hda1 from /proc/mounts, other than rebooting?
Which entry is really the root FS?
Kernel is 2.4.8; raidtools is version 0.90.20010914-11. It's Debian/testing.
Doco is http://www.james.rcpt.to/programs/debian/raid1/.
Many thanks,
James Bromberger
--
James Bromberger <james_AT_rcpt.to> www.james.rcpt.to
Remainder moved to http://www.james.rcpt.to/james/sig.html
Au National Linux Conference 2003: http://conf.linux.org.au/
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