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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-25 10:34:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-03-25 10:34:02 -0700 |
| commit | e2cf67f6689a218b4d8e606e90a12491a9cfa366 (patch) | |
| tree | 8e50bab425836a5386229a95edd42a9c2999c50f /Documentation/filesystems | |
| parent | 76ccd234269bd05debdbc12c96eafe62dd9a6180 (diff) | |
| parent | ccf4ad7da0d9c30a962a116cb55bcd7d8c44b0fe (diff) | |
| download | linux-e2cf67f6689a218b4d8e606e90a12491a9cfa366.tar.bz2 | |
Merge tag 'zonefs-5.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs
Pull zonefs fix from Damien Le Moal:
"A single fix from me to correctly handle the size of read-only zone
files"
* tag 'zonefs-5.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
zonfs: Fix handling of read-only zones
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/zonefs.txt | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/Documentation/filesystems/zonefs.txt b/Documentation/filesystems/zonefs.txt index d54fa98ac158..78813c34ec47 100644 --- a/Documentation/filesystems/zonefs.txt +++ b/Documentation/filesystems/zonefs.txt @@ -258,11 +258,11 @@ conditions. | option | condition | size read write read write | +--------------+-----------+-----------------------------------------+ | | good | fixed yes no yes yes | - | remount-ro | read-only | fixed yes no yes no | + | remount-ro | read-only | as is yes no yes no | | (default) | offline | 0 no no no no | +--------------+-----------+-----------------------------------------+ | | good | fixed yes no yes yes | - | zone-ro | read-only | fixed yes no yes no | + | zone-ro | read-only | as is yes no yes no | | | offline | 0 no no no no | +--------------+-----------+-----------------------------------------+ | | good | 0 no no yes yes | @@ -270,7 +270,7 @@ conditions. | | offline | 0 no no no no | +--------------+-----------+-----------------------------------------+ | | good | fixed yes yes yes yes | - | repair | read-only | fixed yes no yes no | + | repair | read-only | as is yes no yes no | | | offline | 0 no no no no | +--------------+-----------+-----------------------------------------+ @@ -307,8 +307,16 @@ condition changes. The defined behaviors are as follow: * zone-offline * repair -The I/O error actions defined for each behavior are detailed in the previous -section. +The run-time I/O error actions defined for each behavior are detailed in the +previous section. Mount time I/O errors will cause the mount operation to fail. +The handling of read-only zones also differs between mount-time and run-time. +If a read-only zone is found at mount time, the zone is always treated in the +same manner as offline zones, that is, all accesses are disabled and the zone +file size set to 0. This is necessary as the write pointer of read-only zones +is defined as invalib by the ZBC and ZAC standards, making it impossible to +discover the amount of data that has been written to the zone. In the case of a +read-only zone discovered at run-time, as indicated in the previous section. +the size of the zone file is left unchanged from its last updated value. Zonefs User Space Tools ======================= |