zfs discuss - Feb 2009 - cpu performance degrade during resilver

Hi,
   We are in a situation where we have to move a zpool''s devices from
one LUN to another.
   Our plan was to mirror it up (it''s single LUN zpool), and break the
mirror after resilvering.

   #zpool attach mypool existingdisk newdisk
   #zpool status mypool  (wait for resilvering to be finished)
   #zpool detach mypool existingdisk

   We did not dare to try the replace function, as we wasnot sure if this would
work.
 
   Well, It worked, but during the resilver, the machine was almost
non-responsive.  The resilvering
   took all available resources on the machine.

  ..and it''s not a formel-1 machine, it''s a 2cpu 1.5Ghz
SUNW,Sun-Fire-V215 w/10G memory

  We have got 1 more LUN where we have to do this.  Is there any way to make the
resilver-
  process use less resources?  

  There is no compression and no checksum at the moment on the zpool.
  The solaris version is (sorry to say) solaris 10-1106

-mnespen-
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