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In the internal testing that was done, stat-prefetch did help
reduce the number of stats coming from qemu hitting the disk,
and thereby improved performance.
Change-Id: Icf1ce62ecf4e96b97e1946a77b30434157a7786a
BUG: 1468191
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: https://review.gluster.org/17713
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Smoke: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Amar Tumballi <amarts@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Apart from some of the option configurations already listed
in the group-virt.example file, we also recommend that the
users set certain other options added by this patch for
VM use-case. This also helps Gluster-oVirt users in configuring
virt options for new volumes at the click of a button as opposed
to setting them manually through volume-set command.
Change-Id: I8524e8d8a06bbbb0b9247571706e786410013b41
BUG: 1418900
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Reviewed-on: https://review.gluster.org/16577
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>
Reviewed-by: Sahina Bose <sabose@redhat.com>
Reviewed-by: Niels de Vos <ndevos@redhat.com>
Commit 23ccabbeb7 introduced a new key "disperse.eager-lock" which
causes a conflict with key "cluster.eager-lock" when option is used
without the qualifying namespace. group-virt.example which gets
installed as /var/lib/glusterd/ groups/virt contains options without
namespace qualifiers. This patch adds the appropriate namespace to all
options in group-virt.example.
Change-Id: I2c09dd10d44138410d889ddeb805f01c641c6780
BUG: 1314649
Signed-off-by: Vijay Bellur <vbellur@redhat.com>
Reviewed-on: http://review.gluster.org/13929
Smoke: Gluster Build System <jenkins@build.gluster.com>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
CentOS-regression: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
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>
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>
- 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>
