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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2011-02-21 13:21:03 +0100 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-10-14 16:47:46 +0200 |
| commit | 7ad651b52218eea3f9280dbb353dfe0c42742d85 (patch) | |
| tree | 52206f862eb6d1999252522e181d833673348ff7 /include/linux/drbd.h | |
| parent | 46a15bc3ec425b546d140581c28192ab7877ddc4 (diff) | |
| download | lwn-7ad651b52218eea3f9280dbb353dfe0c42742d85.tar.gz lwn-7ad651b52218eea3f9280dbb353dfe0c42742d85.zip | |
drbd: new on-disk activity log transaction format
Use a new on-disk transaction format for the activity log, which allows
for multiple changes to the active set per transaction.
Using 4k transaction blocks, we can now get rid of the work-around code
to deal with devices not supporting 512 byte logical block size.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'include/linux/drbd.h')
| -rw-r--r-- | include/linux/drbd.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/drbd.h b/include/linux/drbd.h index 35fc08a0a552..70a688b92c1b 100644 --- a/include/linux/drbd.h +++ b/include/linux/drbd.h @@ -336,6 +336,10 @@ enum drbd_timeout_flag { #define DRBD_MAGIC 0x83740267 #define DRBD_MAGIC_BIG 0x835a +/* how I came up with this magic? + * base64 decode "actlog==" ;) */ +#define DRBD_AL_MAGIC 0x69cb65a2 + /* these are of type "int" */ #define DRBD_MD_INDEX_INTERNAL -1 #define DRBD_MD_INDEX_FLEX_EXT -2 |