[Bugs] [Bug 1360785] Direct io to sharded files fails when on zfs backend

bugzilla at redhat.com bugzilla at redhat.com
Sat Jul 30 03:54:23 UTC 2016


https://bugzilla.redhat.com/show_bug.cgi?id=1360785



--- Comment #19 from Krutika Dhananjay <kdhananj at redhat.com> ---
I guess one way to check whether zfs supports odirect or not is by running the
same test you ran on glusterfs again, only this time use zfs directly to store
the vm (keep the cache=none setting as it is). If open() fails with EINVAL,
then very likely the issue is ZFS support for O_DIRECT (rather the lack of it).

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