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Diffstat (limited to 'Documentation/filesystems/overlayfs.rst')
| -rw-r--r-- | Documentation/filesystems/overlayfs.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/filesystems/overlayfs.rst b/Documentation/filesystems/overlayfs.rst index 580ab9a0fe31..a3e588dc8437 100644 --- a/Documentation/filesystems/overlayfs.rst +++ b/Documentation/filesystems/overlayfs.rst @@ -563,6 +563,11 @@ This verification may cause significant overhead in some cases. Note: the mount options index=off,nfs_export=on are conflicting for a read-write mount and will result in an error. +Note: the mount option uuid=off can be used to replace UUID of the underlying +filesystem in file handles with null, and effectively disable UUID checks. This +can be useful in case the underlying disk is copied and the UUID of this copy +is changed. This is only applicable if all lower/upper/work directories are on +the same filesystem, otherwise it will fallback to normal behaviour. Volatile mount -------------- |