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Re: [linux-lvm] pvmove and 100% IO Wait
- From: Christian Völker <chrischan knebb de>
- To: LVM general discussion and development <linux-lvm redhat com>
- Subject: Re: [linux-lvm] pvmove and 100% IO Wait
- Date: Sun, 09 Nov 2008 05:29:00 +0100
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Yohoo!
> Might not be, but if an operation involves multiple disks it will
> probably go at the pace of the slowest disk, which for me has always
> been USB...
I agree about the speed- but not with the issue of hanging. When pvmove
works the IO load is moderate (about 20% or less). But when it hangs it
jumps up to 100% on one or more cores.
> Are you 100% certainty the devices underlying all PVs are good, that
> you can dd 100% successfully?
Yes. I can do resize2fs, cp, mv and dd, too. Well, I haven't tried to dd
the whole devices as they are aprox. 1.5TB in size. But I'd say this is
fine!
GReetings
Christian
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