[linux-lvm] pvmove and 100% IO Wait
chrischan at knebb.de
Sun Nov 9 04:29:00 UTC 2008
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> 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
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