Re: md: could not bd_claim hde1

On Sun, 11 Oct 2009, NeilBrown wrote:

Either hde1 or hde is definitely in use by something else.
Try:
cat /proc/mounts

# cat /proc/mounts
rootfs / rootfs rw 0 0
/proc /proc proc rw,nodiratime 0 0
none /dev tmpfs rw 0 0
/dev/root / ext3 rw 0 0
none /dev tmpfs rw 0 0
/proc /proc proc rw,nodiratime 0 0
/proc/bus/usb /proc/bus/usb usbfs rw 0 0
/sys /sys sysfs rw 0 0
none /dev/pts devpts rw 0 0
none /dev/shm tmpfs rw 0 0
/dev/md1 /var ext3 rw 0 0
none /proc/sys/fs/binfmt_misc binfmt_misc rw 0 0
sunrpc /var/lib/nfs/rpc_pipefs rpc_pipefs rw 0 0
[there's a remote nfs mount here that I've removed]

cat /proc/swaps

# cat /proc/swaps
Filename                                Type            Size    Used    Priority
/dev/hdg2                               partition       1052248 160     -1

ls -l /sys/block/hde1/holders
ls -l /sys/block/hde/holders

# ls -ld /sys/block/hd*
drwxr-xr-x  3 root root 0 Oct 11 00:53 /sys/block/hda
drwxr-xr-x  6 root root 0 Oct 11 00:53 /sys/block/hde
drwxr-xr-x  6 root root 0 Oct 11 00:53 /sys/block/hdg

# ls -l /sys/block/hde
total 0
-r--r--r--  1 root root 4096 Oct 11 00:53 dev
lrwxrwxrwx  1 root root    0 Oct 11 00:53 device -> ../../devices/pci0000:00/0000:00:02.0/0000:02:1f.0/0000:03:03.0/0000:04:0c.0/ide2/2.0
drwxr-xr-x  2 root root    0 Oct  9 23:52 hde1
drwxr-xr-x  2 root root    0 Oct  9 23:52 hde2
drwxr-xr-x  2 root root    0 Oct  9 23:52 hde3
drwxr-xr-x  3 root root    0 Oct  9 23:52 queue
-r--r--r--  1 root root 4096 Oct 11 00:53 range
-r--r--r--  1 root root 4096 Oct 11 00:53 removable
-r--r--r--  1 root root 4096 Oct 11 00:53 size
-r--r--r--  1 root root 4096 Oct 11 00:53 stat

# ls -l /sys/block/hde/hde1/
total 0
-r--r--r--  1 root root 4096 Oct 11 00:54 dev
-r--r--r--  1 root root 4096 Oct 11 00:54 size
-r--r--r--  1 root root 4096 Oct 11 00:54 start
-r--r--r--  1 root root 4096 Oct 11 00:54 stat
# ls -l /sys/block/hde/hde3/
total 0
-r--r--r--  1 root root 4096 Oct 11 00:54 dev
-r--r--r--  1 root root 4096 Oct 11 00:54 size
-r--r--r--  1 root root 4096 Oct 11 00:54 start
-r--r--r--  1 root root 4096 Oct 11 00:54 stat

cat /proc/mdstat

# cat /proc/mdstat
Personalities : [raid1]
md1 : active raid1 hdg3[1]
      38547840 blocks [2/1] [_U]

md0 : active raid1 hdg1[1]
      38547840 blocks [2/1] [_U]

unused devices: <none>

lsof /dev/hde /dev/hde1

# lsof /dev/hde /dev/hde1
#

----------------------------------------------------------------------
 Jon Lewis                   |  I route
 Senior Network Engineer     |  therefore you are
 Atlantic Net                |
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