Rui Santos wrote: > Rui Santos wrote: > >> James Knott wrote: >> >>> I've now got SUSE 10.2 set up with RAID and LVM on my server. However, >>> I don't seem to be able to re-add a "failed" drive, without rebooting. >>> The drives are hot-swapable. When I use the command mdadm /dev/md0/ >>> -add /dev/sdxx I get a "device busy" error message. Even removing the >>> drive with the --remove option, before the add command doesn't help. I >>> still have to reboot to add the drive. Is there something I'm missing? >>> >> If a drive/partition is marked as "failed", you need to remove it from >> the RAID first with: >> > > Sorry - forgot this: > > mdadm --manage --set-faulty /dev/mdx /dev/sdxx > > >> mdadm --manage --remove /dev/mdx /dev/sdxx >> >> Then you can add it again with: >> >> mdadm --manage --add /dev/mdx /dev/sdxx >> >> Hope it helps. >> >> >>> tnx jk >>> >>> > > If I go through the --set-faulty, --fail, --add sequence from the command line, I have no problem adding the drive back. However, if I simulate a drive failure by pulling the drive, that sequence fails with the error message "mdadm: add new device failed for /dev/sdd2 as 4: Invalid argument". If I then reboot the computer, I can then use --add to add the drive again. So, there appears to be some difference between using commands to remove a drive and an actual hardware failure.
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