Ok, setting 'gluster volume set data_fast4 network.remote-dio on' allowed me
to create the storage domain without any issues.I set it on all 4 new gluster
volumes and the storage domains were successfully created.
I have created bug for that:https://bugzilla.redhat.com/show_bug.cgi?id=1711060
If someone else already opened - please ping me to mark this one as duplicate.
Best Regards,Strahil Nikolov
В четвъртък, 16 май 2019 г., 22:27:01 ч. Гринуич+3, Darrell Budic
<bu...@onholyground.com> написа:
On May 16, 2019, at 1:41 PM, Nir Soffer <nsof...@redhat.com> wrote:
On Thu, May 16, 2019 at 8:38 PM Darrell Budic <bu...@onholyground.com> wrote:
I tried adding a new storage domain on my hyper converged test cluster running
Ovirt 4.3.3.7 and gluster 6.1. I was able to create the new gluster volume
fine, but it’s not able to add the gluster storage domain (as either a managed
gluster volume or directly entering values). The created gluster volume mounts
and looks fine from the CLI. Errors in VDSM log:
...
2019-05-16 10:25:09,584-0500 ERROR (jsonrpc/5) [storage.fileSD] Underlying file
system doesn't supportdirect IO (fileSD:110)
2019-05-16 10:25:09,584-0500 INFO (jsonrpc/5) [vdsm.api] FINISH
createStorageDomain error=Storage Domain target is unsupported: ()
from=::ffff:10.100.90.5,44732, flow_id=31d993dd,
task_id=ecea28f3-60d4-476d-9ba8-b753b7c9940d (api:52)
The direct I/O check has failed.
So something is wrong in the files system.
To confirm, you can try to do:
dd if=/dev/zero of=/path/to/mountoint/test bs=4096 count=1 oflag=direct
This will probably fail with:dd: failed to open '/path/to/mountoint/test':
Invalid argument
If it succeeds, but oVirt fail to connect to this domain, file a bug and we
will investigate.
Nir
Yep, it fails as expected. Just to check, it is working on pre-existing
volumes, so I poked around at gluster settings for the new volume. It has
network.remote-dio=off set on the new volume, but enabled on old volumes. After
enabling it, I’m able to run the dd test:
[root@boneyard mnt]# gluster vol set test network.remote-dio enablevolume set:
success[root@boneyard mnt]# dd if=/dev/zero of=testfile bs=4096 count=1
oflag=direct1+0 records in1+0 records out4096 bytes (4.1 kB) copied, 0.0018285
s, 2.2 MB/s
I’m also able to add the storage domain in ovirt now.
I see network.remote-dio=enable is part of the gluster virt group, so
apparently it’s not getting set by ovirt duding the volume creation/optimze for
storage?
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