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authorRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-20 03:28:01 +0900
committerRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>2009-11-20 10:05:52 +0900
commit0234576d041b9b2cc7043691ea61d2c2ca597aaa (patch)
tree1fd5f397cf0a7cb010a3e383a715438e64582b65 /Documentation/filesystems/nilfs2.txt
parenta057d2c01161444c48b12a60351ae6c7135f6e61 (diff)
downloadop-kernel-dev-0234576d041b9b2cc7043691ea61d2c2ca597aaa.zip
op-kernel-dev-0234576d041b9b2cc7043691ea61d2c2ca597aaa.tar.gz
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/nilfs2.txt')
-rw-r--r--Documentation/filesystems/nilfs2.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/filesystems/nilfs2.txt b/Documentation/filesystems/nilfs2.txt
index cbd8779..4949fca 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
============
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