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glusterfs/extras/group-virt.example

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Added virt group file - template for 'group' set - This sample file contains the set of volume options that are associated with volumes that would be used to store VMs. - To enable the set of options present in this file one must do the following, - # cp extras/group-virt.example /var/lib/glusterd/groups/<group-name> # gluster volume set <volume-name> group <group-name> Change-Id: I8848d3d222ce114900db885aeef2f20c83ece28c BUG: 851237 Signed-off-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-on: http://review.gluster.org/4232 Reviewed-by: Anand Avati <avati@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
2012-11-26 10:51:23 +04:00
quick-read=off
read-ahead=off
io-cache=off
stat-prefetch=off
eager-lock=enable
group-virt: Change profile to include remote-dio and exclude posix-aio. remote-dio enables filtering O_DIRECT in the client xlator. This has been found to be useful for improving performance when there are multiple VMs talking to an image store. Aggregated throughput results for a single thread iozone run from multiple VMs and a single host can be seen below: ------------------------------------------------- No. of VMs | remote-dio on | remote-dio off | ------------------------------------------------- 2 | 400 MB/s | 202 MB/s | 4 | 650 MB/s | 410 MB/s | -------------------------------------------------- posix-aio has not been found to improve performance consistently with VM image workload. Hence not including that in the default virt profile. Change-Id: I592f68b95a955036f1a985352d2f4950ced1deef BUG: 907301 Signed-off-by: Vijay Bellur <vbellur@redhat.com> Reviewed-on: http://review.gluster.org/4460 Reviewed-by: Anand Avati <avati@redhat.com> Tested-by: Anand Avati <avati@redhat.com>
2013-02-04 08:47:01 +04:00
remote-dio=enable
group-virt: To minimize 'split-brain' enable quorum under virt profile Quorum as default is necessary when storing virtual machine images. It would be necessary to enable both server and client quorum Currently defaulted values are: ---------------- server-quorum-type=server quorum-type=auto ---------------- Change-Id: Ic2adb5856ce3c2589476e872e988cae6eeb9b25e BUG: 1032080 Signed-off-by: Harshavardhana <harsha@harshavardhana.net> Reviewed-on: http://review.gluster.org/6340 Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
2013-11-22 13:37:33 +04:00
quorum-type=auto
server-quorum-type=server
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