Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
you can resize an LVM backed DRBD volume live. I tested prior to going
live with our NFS cluster.
assuming that /dev/drbd0 sits on top of /dev/vg00/lv05 ,
while both nodes in connected sates
both nodes:
lvextend -L+5G /dev/vg00/lv05
master:
drbdsetup /dev/drbd0 resize
wait for sync complete
resize2fs /dev/drbd0 ( assuming ext3 )
enjoy
Dan
Rainer Sokoll wrote:
> On Mon, Jun 15, 2009 at 05:21:49PM +0200, Heiko wrote:
>
>> Hello,
>>
>> i have to grow one VM that is mirrored with drbd.
>> We use LVM partitions for drbd.
>>
>> Will the following steps be enough?
>>
>> shutdown vm
>> shutdown drbd devices
>> lvresize on both servers
>> connect drbd devices
>>
>
> I never did this, but there is a subcommand for drbdadm: resize.
> >From the man page:
>
> resize Causes DRBD to re-examine all sizing constraints, and resize
> the resource's device accordingly. For example in case you
> increased the size of your backing storage devices (on both
> nodes of course), then DRBD will adopt to the new size after you
> called this command on one of your nodes. Since new storage
> space must be synchronised this command only works if there is
> at least one primary node present.
>
> Rainer
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>
>