On Wednesday June 6, [EMAIL PROTECTED] wrote:
> In the XFS kernel tree v2.4.3 w/ several patches,
> we were unable to "raidhotremove" and subsequently
> "raidhotadd" a spare without a reboot. It did not
> matter if you had a new or the same hard disk. We then
> tried the patch Igno Molnar sent regarding the issue.
>
> http://www.mail-archive.com/linux-raid@vger.kernel.org/msg00551.html
>
> This solved the problem of not doing a reboot and trying
> to switch a hotspare and faulty drive.
>
> In addition, however, we are seeing a kernel panic using
> raid 5 when mdrecoveryd starts when after doing the hotspare
> and faulty drive swap a second time without a reboot.
...
>
> Do you have any suggestions Neil?
Yep. Upgrade to the latest kernel! (Don't you just hate it when that
turns out to be the answer).
Ingo's patch is half right, but not quite there.
http://www.cse.unsw.edu.au/~neilb/patches/linux/2.4.5-pre2/patch-A-rdevfix
contains a correct version of the patch. It is in 2.4.5.
NeilBrown
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