[Bugs] [Bug 1751722] Gluster fuse mount crashed during truncate

bugzilla at redhat.com bugzilla at redhat.com
Wed Sep 18 17:06:54 UTC 2019


--- Comment #7 from Nir Soffer <nsoffer at redhat.com> ---
(In reply to Sahina Bose from comment #3)
> Nir, this crash is seen with the 4.3.6. Has anything changed in the way that
> the __DIRECT_IO_TEST__ file is updated?

Yes, this file was always empty before 4.3.6. We used it like this:

    dd if=/dev/zero of=/path bs=4096 count=0 oflag=direct conv=fsync

Verifying that we can do open() with O_DIRECT on the filesystem.

Now we actually so some I/O to detect the capabilities of the filesystem
as explained in comment 6.

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