[brlug-general] mdadm / filesystem questions...
bendily at gmail.com
Tue Dec 14 12:55:01 CST 2010
You may want to figure out which kernel you were on before and go back
to that one, just
to see if it's actually the kernel. If i you revert, and it works ok,
then you can read
what was changed in the newer kernel docs. I'm assuming you're using
your distro's kernel and
not rolling your own? If so, you can wait for your distro to upgrade
to a newer kernel that fixes your
problem, or roll your own kernel.
I had a situation once on a Dell 2650 a certain kernel from our distro
caused high I/O wait times.
This was fixed by a new kernel from the distro. Fortunately I didn't
have to roll my own. I may have
tried that, but I didn't realize the kernel was the problem until I
It could possibly also be updates in the mdadm software. But, for
I would only change one thing at time at this point. Starting with the kernel.
Also, is your raid drivers compiled in the kernel, or as modules?
You could possibly just revert the raid driver, but those may want a
Or you could compile your own newer raid drivers against your current kernel.
On Tue, Dec 14, 2010 at 12:35 PM, Adam Yates <yates at cct.lsu.edu> wrote:
> Hi all;
> I'm having a few problems with a fileserver at work and would like to bounce
> some ideas off
> anyone that could help. I'm ayates83 on #brlug on irc.freenode.net (does
> anyone still inhabit the room?)
> Email is fine too.
> Basic setup is this:
> 2 sets raid-6. 22 drives in each set plus a hot spare.
> After I upgraded a kernel, the drives randomly reassign letters under the
> raid and cause
> the set to break on boot. I can use mdadm --assemble --scan -fv to
> forcefully bring the
> raid back online but it crashes soon thereafter.
> Any input is appreciated!
> Adam Yates
> Systems Administrator -- Research Infrastructure
> Center for Computation and Technology
> 232 Johnston Hall,
> Baton Rouge, LA 70803
> W: 225.578.8235 C: 225.663.0218
> <yates at cct.lsu.edu>
> General mailing list
> General at brlug.net
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