On 05/13/10 03:27 AM, Lori Alt wrote:
On 05/12/10 04:29 AM, Ian Collins wrote:
I just tried moving a dump volume form rpool into another pool so I
used zfs send/receive to copy the volume (to keep some older dumps)
then ran dumpadm -d to use the new location. This caused a panic.
Nothing ended up in messages and needless to say, there isn't a dump!
Creating a new volume and using that worked fine.
This was on Solaris 10 update 8.
Has anyone else seen anything like this?
The fact that a panic occurred is some kind of bug, but I'm also not
surprised that this didn't work. Dump volumes have specialized
behavior and characteristics and using send/receive to move them (or
any other way to move them) is probably not going to work. You need
to extract the dump from the dump zvol using savecore and then move
the resulting file.
I'm surprised. I thought the volume used for dump is just a normal zvol
or other block device. I didn't realise there was any relationship
between a zvol and its contents.
One odd think I did notice was the device size was reported differently
on the new pool:
zfs get all space/dump
NAME PROPERTY VALUE SOURCE
space/dump type volume -
space/dump creation Wed May 12 20:56 2010 -
space/dump used 12.9G -
space/dump available 201G -
space/dump referenced 12.9G -
space/dump compressratio 1.01x -
space/dump reservation none default
space/dump volsize 16G -
space/dump volblocksize 128K -
space/dump checksum on default
space/dump compression on inherited from
space
space/dump readonly off default
space/dump shareiscsi off default
space/dump copies 1 default
space/dump refreservation none default
space/dump primarycache all default
space/dump secondarycache all default
space/dump usedbysnapshots 0 -
space/dump usedbydataset 12.9G -
space/dump usedbychildren 0 -
space/dump usedbyrefreservation 0 -
zfs get all rpool/dump
NAME PROPERTY VALUE SOURCE
rpool/dump type volume -
rpool/dump creation Thu Jun 25 19:40 2009 -
rpool/dump used 16.0G -
rpool/dump available 10.4G -
rpool/dump referenced 16K -
rpool/dump compressratio 1.00x -
rpool/dump reservation none default
rpool/dump volsize 16G -
rpool/dump volblocksize 8K -
rpool/dump checksum off local
rpool/dump compression off local
rpool/dump readonly off default
rpool/dump shareiscsi off default
rpool/dump copies 1 default
rpool/dump refreservation none default
rpool/dump primarycache all default
rpool/dump secondarycache all default
--
Ian.
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