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| author | Luck, Tony <tony.luck@intel.com> | 2011-03-18 23:33:43 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-21 21:50:05 +0100 |
| commit | 366f7e7a79b19bd8c4e8f55fdf12b81538d1a7a4 (patch) | |
| tree | 0c43335ab9e91ca895fdec82d1327cec16dcb645 /Documentation/ABI/testing/pstore | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vir... (diff) | |
| download | linux-366f7e7a79b19bd8c4e8f55fdf12b81538d1a7a4.tar.xz linux-366f7e7a79b19bd8c4e8f55fdf12b81538d1a7a4.zip | |
pstore: use mount option instead sysfs to tweak kmsg_bytes
/sys/fs is a somewhat strange way to tweak what could more
obviously be tuned with a mount option.
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/ABI/testing/pstore')
| -rw-r--r-- | Documentation/ABI/testing/pstore | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/Documentation/ABI/testing/pstore b/Documentation/ABI/testing/pstore index f1fb2a004264..ddf451ee2a08 100644 --- a/Documentation/ABI/testing/pstore +++ b/Documentation/ABI/testing/pstore @@ -1,6 +1,6 @@ Where: /dev/pstore/... -Date: January 2011 -Kernel Version: 2.6.38 +Date: March 2011 +Kernel Version: 2.6.39 Contact: tony.luck@intel.com Description: Generic interface to platform dependent persistent storage. @@ -11,7 +11,7 @@ Description: Generic interface to platform dependent persistent storage. of the console log is captured, but other interesting data can also be saved. - # mount -t pstore - /dev/pstore + # mount -t pstore -o kmsg_bytes=8000 - /dev/pstore $ ls -l /dev/pstore total 0 @@ -33,3 +33,9 @@ Description: Generic interface to platform dependent persistent storage. will be saved elsewhere and erased from persistent store soon after boot to free up space ready for the next catastrophe. + + The 'kmsg_bytes' mount option changes the target amount of + data saved on each oops/panic. Pstore saves (possibly + multiple) files based on the record size of the underlying + persistent storage until at least this amount is reached. + Default is 10 Kbytes. |