On 19/08/2017 10:24, Yannis Milios wrote:
Option (b) seems more suitable for a 2 node drbd8 cluster in a
primary/secondary setup. Haven't tried it so I cannot tell if there are
any clurpits. My only concern in such setup would be if drbd corrupts
silently the data on the lower level and zfs is not aware of that.Also,
if you are *not* going to use live migration, and you can affort loosing
some seconds of data on the secondary node in favor of better
performance in the primary node, then you could consider using protocol
A instead of C for the replication link.
Hi all,
I "revive" this old thread to let you know I settled to use DRBD 8.4 on
top of ZVOLs.
I have a question for anyone using DRBD on top of a snapshot-capable
backend (eg: ZFS, LVM, etc)...
When snapshotting a DRBD block device, trying to mount it (the snapshot,
not the original volume!) results in the following error message:
[root@master7 tank]# mount /dev/zvol/tank/vol1\@snap1 /mnt/
mount: unknown filesystem type 'drbd'
To successfully mount the snapshot volume, I need to specify the volume
filesystem, for example (the other options are xfs-specific):
[root@master7 tank]# mount -t xfs /dev/zvol/tank/vol1\@snap1 /mnt/ -o
ro,norecovery,nouuid
Is that the right approach? Or I am missing something?
Thanks.
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