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I am using Debian etch. I have raid1 on /. While running mdadm-raid, I see failed(busy). While running umounting fs, I see /dev/md0 still in use. How can I fix this problem and umount it correctly while running shutdown or reboot? Here is my rc6.d:
try to compare the PIDs with the output of 'ps -A'. i don't think you'll need to kill all the processes. btw why are you trying to unmount / ?. are you shutting the system down?
Last edited by konsolebox; 08-03-2006 at 05:51 PM.
when you remount a filesystem in RO mode, the kernel automatically flushes the buffers to the drive. so when the drive is in read-only mode, no harm can be done to the filesystem. it means no more writing so no harm.
there's no doubt that almost all process uses /. i don't know which process to kill too. can't you just remount your fs in ro mode then try to kill the processes you can?
sometimes shutdown scripts goes to this procedure:
first send all processess the terminate signal (kill -15).
then send them the kill signal (kill -9).
the kernel processes remains and it's now safe for system shutdown.
These commands are unknown - kill -15 and kill -9. Kill gives me help how to use it. But I think, there is no problem, because there is sending all processes the term signal and then kill signal when rebooting.
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