[linux-lvm] lvs / pvs takes ages to execute under slight load

Tomasz Chmielewski mangoo at wpkg.org
Wed May 14 20:55:01 UTC 2008

I noticed that various LVM commands, such as lvs, pvs, lvresize etc. can take 
several minutes to execute if I do a simple task like:

   dd if=/dev/vol/lv-snapshot of=/dev/vol/lv

Other than LVM commands, the machine is responsive and works fine.

Is it normal that LVM commands take so long to execute if we dd one volume (or 
snapshot volume) to another?

I have Debian Etch 4.0 and kernel

Tomasz Chmielewski

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