Heh, thanks Krutika.
I believe its pretty much there, have been stress testing it on our
production VM cluster for weeks, though not with critical VM's. It is a
huge improvement when for the heal process when dealing with large VM's.
Failure modes have been very reliable to.
Nb. All my testing has been VM's - e.g a few large files with only one
process accessing them. I can't speak to the many thousands of
dirs/files use case.
If you are using it for VM hosting (as you are) then it is essential
that you set the "virt" group properties, other wise you will end up
with VM corruption. These are the settings I've evolved over my testing:
Options Reconfigured:
performance.readdir-ahead: off
features.shard: on
features.shard-block-size: 512MB
cluster.self-heal-window-size: 256
server.event-threads: 4
client.event-threads: 4
cluster.quorum-type: auto
cluster.server-quorum-type: server
performance.low-prio-threads: 32
performance.io-thread-count: 32
performance.cache-refresh-timeout: 4
nfs.disable: on
nfs.addr-namelookup: off
nfs.enable-ino32: off
performance.write-behind: off
performance.strict-write-ordering: on
performance.stat-prefetch: off
performance.quick-read: off
performance.read-ahead: off
performance.io-cache: off
cluster.eager-lock: enable
network.remote-dio: enable
cluster.data-self-heal-algorithm: full
On 21/01/16 02:06, Krutika Dhananjay wrote:
Adding Lindsay Mathieson, who has tested sharding with VM store
extensively. :)
-Krutika
------------------------------------------------------------------------
*From: *"Bello Florent" <[email protected]>
*To: *[email protected]
*Sent: *Wednesday, January 20, 2016 8:12:27 PM
*Subject: *[Gluster-users] Shard in production
Hi,
i see recently the Shard feature is reached to stable. Soon, i
want to install oVirt with Gluster Replica Storage and i guess
shard feature is good for me. Can i use this feature for my VM
Storage production or you guess it's not mature ?
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Lindsay Mathieson
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