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Le 09/09/2013 10:50, Xavier Hernandez a écrit :<br>
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<div class="moz-cite-prefix">Al 09/09/13 09:59, En/na Olivier
Desport ha escrit:<br>
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Hello,<br>
<br>
I've created a distribued volume with two bricks. The shares are
partitioned in XFS. Locking doesn't seem to be activated : when
I write in the same file with two different clients, no error
occurs.<br>
<br>
What option should I enable on the volume to enable locking ?<br>
<br>
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Locking is active always, however POSIX (the standard used by
GlusterFS) does not impose an exclusive access to files. Under
POSIX, it is the responsibility of the application to coordinate
concurrent accesses to files using explicit calls to fcntl() to
coordinate them. Even using this, another application can
read/write the file if it does no use an explicit call to fcntl().<br>
<br>
Since GlusterFS is POSIX-compliant, it is the expected behavior
that two clients could write to the same file at the same time.
The resulting file may have a mix of writes from both clients.<br>
<br>
Best regards,<br>
<br>
Xavi<br>
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<br>
<br>
Thanks for your answer.<br>
<br>
<blockquote cite="mid:522D8BBB.4060005@datalab.es" type="cite"> <br>
<blockquote cite="mid:522D7FE6.5030003@ac-versailles.fr"
type="cite"> Thanks
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