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 [thread overview]
Message-ID: <4916670C.4020502@knebb.de> (raw)
In-Reply-To: <f4f537b50811081523v303ba8aep6b24de53c414a6d2@mail.gmail.com>
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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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next prev parent reply other threads:[~2008-11-09 4:29 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-08 20:35 [linux-lvm] pvmove and 100% IO Wait Christian Völker
2008-11-08 20:43 ` Eugene Vilensky
2008-11-08 20:50 ` Christian Völker
2008-11-08 23:23 ` Eugene Vilensky
2008-11-09 4:29 ` Christian Völker [this message]
2008-11-10 17:33 ` Jeremy Lyon
2008-11-13 5:17 ` Christian Völker
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