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virtiofs: Add mount option and atime behavior to the doc

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Add a section to show the mount option and a subsection to show
the atime behavior.

Signed-off-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
This commit is contained in:
Masayoshi Mizuma 2019-12-17 15:55:20 -05:00 committed by Miklos Szeredi
parent bb737bbe48
commit a5d8422cc9
1 changed files with 14 additions and 0 deletions
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14
Documentation/filesystems/virtiofs.rst
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@ -39,6 +39,20 @@ Mount file system with tag ``myfs`` on ``/mnt``:
Please see https://virtio-fs.gitlab.io/ for details on how to configure QEMU
and the virtiofsd daemon.
Mount options
-------------
virtiofs supports general VFS mount options, for example, remount,
ro, rw, context, etc. It also supports FUSE mount options.
atime behavior
^^^^^^^^^^^^^^
The atime-related mount options, for example, noatime, strictatime,
are ignored. The atime behavior for virtiofs is the same as the
underlying filesystem of the directory that has been exported
on the host.
Internals
=========
Since the virtio-fs device uses the FUSE protocol for file system requests, the