Il 25-08-2017 22:01 Digimer ha scritto:
On 2017-08-25 03:37 PM, Gionatan Danti wrote:
The overhead of clustered locking is likely such that your VM
performance would not be good, I think.
Mmm... I need to do some more testing with fio, it seems ;)
With raw clustered LVs backing the servers, you don't need cluster
locking on a per-IO basis, only on LV create/change/delete. Because LVM
is sitting on top of DRBD (in dual-primary), live-migration is no
trouble at all and performance is good, too.
True.
GFS2, being a cluster FS, will work fine if a node is lost, provided it
is fenced succesfully. It's wouldn't be much of a cluster-FS otherwise.
:)
So no problem with quorum? A loss of a system in a two-node cluster
seems to wreack havok on other cluster filesystems (Gluster, for
example...)
Thanks.
--
Danti Gionatan
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