[linux-lvm] pvmove and 100% IO Wait

[Christian Völker <chrischan knebb de>]

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Yohoo!

I've some issues with pvmove.

It is very likely to appear during a pvmove operation for my server to
spike to 100% IO waits.

If this happens, no IO on the LVs is possible, even the rest of the
server is accessible without any issues.

I can't predict when it happens, but it happens...

pvmove started. Some minutes or hours later the io wait on the server
goes up to 100% (or 3 cores of the quad core are going to 100%).

Running a RedHat EL 5.x (CentOS) with all current updates. The storage
consists of two 3Ware 9500 PCI-X, a USB-SATA drive and three disks
connected to the local SATA controller.

I can't see anything relevant in the logfiles. When the CPU is up, I
have to reset the server as any operation on the LV will never finish  :-(

Any clues?

Christian

Any clues?
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