mount.cifs: document 'fsc' mount option
Subsystems (2)
PATCH 1/1 mount.cifs: document 'fsc' mount option
Changes since last post:
- added the information about the kernel CONFIG option
- also added the information that caching is currently enabled for files opened as read-only
Document the newly added local caching feature using FS-Cache. This patch could be queued and considered once the local caching patches gets merged upstream.
---
doc/mount.cifs.8.xml | 20 ++++++++++++++++++++ 1 files changed, 20 insertions(+), 0 deletions(-)
doc/mount.cifs.8.xml +20 -0
@@ -534,6 +534,26 @@ permissions in memory that can't be stored on the server. This information can d maximum wsize currently allowed by CIFS is 57344 (fourteen 4096 byte pages)</para></listitem> </varlistentry> + <varlistentry> + <term>fsc</term> + + <listitem><para>Enable local disk caching using FS-Cache + for cifs. This option could be useful to improve performance + on a slow link, heavily loaded server and/or network + where reading from the disk is faster than reading from the + server (over the network). This could also impact the + scalability positively as the number of calls to the server + are reduced. But, be warned that local caching is not suitable + for all workloads, for e.g., read-once type workloads. So + you need to consider carefully the situation/workload before + using this option. Currently, local disk caching is enabled + for CIFS files opened as read-only. + NOTE: This feature is available only in the recent kernels + that have been built with the kernel config option + CONFIG_CIFS_FSCACHE. You also need to have cachefilesd daemon + installed and running to make the cache operational. + </para></listitem> + </varlistentry> <varlistentry> <term>--verbose</term> <listitem><para>Print additional debugging information for the mount. Note that this parameter must be specified before the -o. For example:</para><para>mount -t cifs //server/share /mnt --verbose -o user=username</para></listitem>
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Quoted 47 lines · On Tue, 27 Jul 2010 22:18:10 +0530 Suresh Jayaraman…
Changes since last post:
- added the information about the kernel CONFIG option
- also added the information that caching is currently enabled for files opened as read-onlyDocument the newly added local caching feature using FS-Cache. This patch could be queued and considered once the local caching patches gets merged upstream.
Signed-off-by Suresh Jayaraman <[email protected]>---
doc/mount.cifs.8.xml | 20 ++++++++++++++++++++ 1 files changed, 20 insertions(+), 0 deletions(-)doc/mount.cifs.8.xml +20
-1@@ -534,6 +534,26 @@ permissions in memory that can't be stored on the server. This information can d maximum wsize currently allowed by CIFS is 57344 (fourteen 4096 byte pages)</para></listitem> </varlistentry> + <varlistentry> + <term>fsc</term> + + <listitem><para>Enable local disk caching using FS-Cache + for cifs. This option could be useful to improve performance + on a slow link, heavily loaded server and/or network + where reading from the disk is faster than reading from the + server (over the network). This could also impact the + scalability positively as the number of calls to the server + are reduced. But, be warned that local caching is not suitable + for all workloads, for e.g., read-once type workloads. So + you need to consider carefully the situation/workload before + using this option. Currently, local disk caching is enabled + for CIFS files opened as read-only. + NOTE: This feature is available only in the recent kernels + that have been built with the kernel config option + CONFIG_CIFS_FSCACHE. You also need to have cachefilesd daemon + installed and running to make the cache operational. + </para></listitem> + </varlistentry> <varlistentry> <term>--verbose</term> <listitem><para>Print additional debugging information for the mount. Note that this parameter must be specified before the -o. For example:</para><para>mount -t cifs //server/share /mnt --verbose -o user=username</para></listitem> --
Quoted 4 lines
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I had already merged the original patch, so I've merged this one as a delta on top of that.
Thanks,
Signature · 1 line
Jeff Layton <[email protected]>