On May 16, 2019, at 1:41 PM, Nir Soffer <[email protected]> wrote: > > On Thu, May 16, 2019 at 8:38 PM Darrell Budic <[email protected] > <mailto:[email protected]>> 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 enable volume set: success [root@boneyard mnt]# dd if=/dev/zero of=testfile bs=4096 count=1 oflag=direct 1+0 records in 1+0 records out 4096 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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