Xen users - Aug 2007 - swap partition and live migration.

when performing a live migration i know the contents of the ram
is copied over two the new xen server, but how about the contents
of the swap partition.

currently I have the swap partition in a seperate loopback file
from the root partition.  if i want to do a live migration, do i have to
give the new server access to the swap partition file along
with the root partition file?  of can i just share the root partition
and have a different swap file located on the new server?

TIA,
Tomoki

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hi,

Tomoki Taniguchi schrieb:
> when performing a live migration i know the contents of the ram
> is copied over two the new xen server, but how about the contents
> of the swap partition.
two different ways:

first: you have the guest installed into a disc or file, which has
partitions inside (root and swap), so that it only necessary to share
the disk/file over the network.

If the root (/) from the guest in a file, or disc without partitions,
than you have to make sure, that the SWAP file is available on the same
path. You can''t create just a new SWAP, cause you don''t know
if
something was swapped out. First you have to do a swapoff and remove the
disc inside the guest, and after the migration add the disc again and do
a swapon.

the better way is to you the swap file on NFS, or use ISCSI.

cu denny

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