Re: invalidate: busy buffer

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On Friday February 1, ross@willow.seitz.com wrote:
> Hello all,
> 
> 	I've got an AMD K6-2 500 box with one disk of a RAID1 mirrored pair
> installed (waiting for the second to show up in the mail).  Certain disk
> operations on /dev/md0 seem to cause the kernel to spit "invalidate: busy
> buffer" error messages.  I've searched for info about this message, and it seems
> to be a harmless LVM message..... except that I don't have LVM support in my
> kernel.  Is this still harmless for my RAID pair?

Depends....

I know this can happen at shutdown if the root filesystem is on raid,
as the root filesystem never gets unmounted, so raid shuts down while
buffers could be in use (read-only). 

This is safe.

But are you getting "invalidate: busy buffer" in a different context?
If you, could you please give details.
There is a good chance that it is safe, but I would like to know.

NeilBrown

> 
> Ross Vandegrift
> ross@willow.seitz.com
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