[Bugs] [Bug 1424934] [RFE] Include few more options in virt file

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1424934



--- Comment #2 from Krutika Dhananjay <kdhananj at redhat.com> ---
With this patch, we have introduced 5 more options to group virt (VM use cases)
for optimal performance.

Updating to the glusterfs version containing this patch won't automatically set
these newer options on already existing volumes that have group virt
configured. The changes take effect only when post-upgrade a volume-set of
group virt is performed.
For already existing volumes the users may execute the following five commands,
if not already set:

gluster volume set <VOL> performance.low-prio-threads 32
gluster volume set <VOL> cluster.locking-scheme granular
gluster volume set <VOL> features.shard on
gluster volume set <VOL> cluster.shd-max-threads 8
gluster volume set <VOL> cluster.shd-wait-qlength 10000
gluster volume set <VOL> user.cifs off

Of these my assumption is that features.shard would already have been set on
the volume even before the upgrade, in which case the third volume-set command
above may be skipped.

-Krutika

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