diff options
| author | Christof Schmitt <cs@samba.org> | 2014-01-07 11:55:46 -0700 |
|---|---|---|
| committer | Christof Schmitt <cs@samba.org> | 2014-01-09 00:04:47 +0100 |
| commit | d1dacd62bbff93351763ff339cca13ba8180dd89 (patch) | |
| tree | 39e9dd8b8f75f1d92c22605366a30b44e002da5c /docs-xml/manpages/vfs_gpfs.8.xml | |
| parent | ca931e460460ffe46735f98b31db47220772d566 (diff) | |
| download | samba-d1dacd62bbff93351763ff339cca13ba8180dd89.tar.gz | |
s3: Avoid oplock break by storing timestamps with gpfs_set_times
The gpfs_set_times API call allows setting timestamps directly in GPFS
without going through the utime() call. Using this API call fixes an
unecessary oplock break when a client sends a SET_FILE_ALLOCATION_INFO
request and no other client has opened the file. The call to utime()
triggers the oplock break through the Linux kernel. Using the
gpfs_set_times call for updating the timestamp avoids the call to
utime() and the oplock break.
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Christof Schmitt <cs@samba.org>
Autobuild-Date(master): Thu Jan 9 00:04:48 CET 2014 on sn-devel-104
Diffstat (limited to 'docs-xml/manpages/vfs_gpfs.8.xml')
| -rw-r--r-- | docs-xml/manpages/vfs_gpfs.8.xml | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/docs-xml/manpages/vfs_gpfs.8.xml b/docs-xml/manpages/vfs_gpfs.8.xml index 20dba68ffc1..4ba1b251a77 100644 --- a/docs-xml/manpages/vfs_gpfs.8.xml +++ b/docs-xml/manpages/vfs_gpfs.8.xml @@ -318,6 +318,29 @@ <varlistentry> + <term>gpfs:settimes = [ yes | no ]</term> + <listitem> + <para> + Use the gpfs_set_times API when changing the + timestamps of a file or directory. If the GPFS API is + not available the old method of using utime and the + GPFS winattr call will be used instead. + </para> + + <itemizedlist> + <listitem><para> + <command>yes(default)</command> - Use gpfs_set_times. + Fall back to utime and winattr when it is not available. + </para></listitem> + <listitem><para> + <command>no</command> - Do not use gpfs_set_times. + </para></listitem> + </itemizedlist> + </listitem> + + </varlistentry> + <varlistentry> + <term>nfs4:mode = [ simple | special ]</term> <listitem> <para> |