On Fri, Sep 12, 2008 at 08:15:04AM +0200, Raven wrote: > Hi all. > I am in a sticky situation. I run remotely a server and one of the disks > is starting to fail.
Sticky indeed.
> Every couple days (or more, depends on the www traffic level) scsi drive
> sdc fails (with "rejecting I/O to device bla bla bla"). This a BIG
> problem because my /usr resides on sdc1, and everytime it happens I have
> to send somebody to kill the server and restart it.
You can do this without rebooting, I think.
>
> I figured, since I do not have physical access to the server, that the
> best choice would be copying the whole /usr to another drive and (hoping
> there are no problems while copying) change the required stuff in fstab.
>
> Before starting blindly cp'ing files, I would like to hear your advice
> on the process and if I have any chance of succeeding (or if you have
> another method that would work better)
Example: assume /usr is the only thing on /dev/sdc1,
/dev/sdd1 (or some partition on another disk) has enough space available for
the /usr directory, and is formatted.
Do: ~# mount /dev/sdd1 /mnt
~# mkdir /mnt/usr
~# cp -ax /usr/* /mnt/usr/
~# umount /dev/sdd1
Edit your /etc/fstab to reflect the new location of /usr, i.e.:
/dev/sdc1 /usr ext3 defaults,nodev 0 2
would now read:
/dev/sdd1 /usr ext3 defaults,nodev 0 2
Then do: ~# mount -o remount /usr
Then check the transition with:
~# cat /proc/mounts
You should see the new partition mounted at /usr. Then you can retire your
faulty disc.
Regards,
Dave
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