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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-19 19:28:01 +0100 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2009-11-20 02:05:52 +0100 |
| commit | 0234576d041b9b2cc7043691ea61d2c2ca597aaa (patch) | |
| tree | 1fd5f397cf0a7cb010a3e383a715438e64582b65 /Documentation/filesystems | |
| parent | nilfs2: add helper to get if volume is in a valid state (diff) | |
| download | linux-0234576d041b9b2cc7043691ea61d2c2ca597aaa.tar.xz linux-0234576d041b9b2cc7043691ea61d2c2ca597aaa.zip | |
nilfs2: add norecovery mount option
This adds "norecovery" mount option which disables temporal write
access to read-only mounts or snapshots during mount/recovery.
Without this option, write access will be even performed for those
types of mounts; the temporal write access is needed to mount root
file system read-only after an unclean shutdown.
This option will be helpful when user wants to prevent any write
access to the device.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Eric Sandeen <sandeen@redhat.com>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/nilfs2.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/filesystems/nilfs2.txt b/Documentation/filesystems/nilfs2.txt index cbd877978c80..4949fcaa6b6a 100644 --- a/Documentation/filesystems/nilfs2.txt +++ b/Documentation/filesystems/nilfs2.txt @@ -70,6 +70,10 @@ order=strict Apply strict in-order semantics that preserves sequence blocks. That means, it is guaranteed that no overtaking of events occurs in the recovered file system after a crash. +norecovery Disable recovery of the filesystem on mount. + This disables every write access on the device for + read-only mounts or snapshots. This option will fail + for r/w mounts on an unclean volume. NILFS2 usage ============ |