Jonathan Earl Brassow 34cbedceaf This patch fixes an issue where cluster mirror write I/O ... can be opprobriously slow if created with '--nosync'. One of the ways cluster mirrors coordinate I/O and recovery amoung the different machines is by the use of the log function 'is_remote_recovering()' which lets nodes know if a region they wish to perform a write on is currently being recovered on another node. If the region is being recovered, the I/O is delayed. The 'is_remote_recovering' routine has been optimized to avoid the deluge of requests that would be issued to the userspace log server by maintaining a marker of how far the recovery has gotten. It can then immediately return 'not recovering' if the region being inquired about is less than this mark. Additionally, if the region of concern is greater than the mark, the function will limit the number of transmissions to userspace by assuming the region /is/ being recovered when skipping the transmission. This limits the amount of processing and updates the mark in 1/4 sec time steps. This patch fixes a problem where 'the mark' is not being updated because of faulty logic in the userspace log daemon. When '--nosync' is used to create a cluster mirror, the userspace log daemon never has a chance to update the mark in the normal way. The fix is to set the mark to "complete" if the mirror was created with the --nosync flag.		2010-08-30 18:37:42 +00:00
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clogd.c	Add dm_create_lockfile to libdm to handle pidfiles for all daemons.	2010-07-13 13:51:01 +00:00
cluster.c	Use __attribute__ consistently throughout.	2010-07-09 15:34:40 +00:00
cluster.h	Deal with a few more compiler warnings.	2010-01-20 02:43:19 +00:00
common.h	Clean up include files.	2010-01-18 21:07:24 +00:00
compat.c	Use __attribute__ consistently throughout.	2010-07-09 15:34:40 +00:00
compat.h	Clean up include files.	2010-01-18 21:07:24 +00:00
functions.c	This patch fixes an issue where cluster mirror write I/O	2010-08-30 18:37:42 +00:00
functions.h	Clean up include files.	2010-01-18 21:07:24 +00:00
link_mon.c	Signal handling FIXMEs.	2010-01-19 15:58:45 +00:00
link_mon.h	Clean up include files.	2010-01-18 21:07:24 +00:00
local.c	Use __attribute__ consistently throughout.	2010-07-09 15:34:40 +00:00
local.h	Clean up include files.	2010-01-18 21:07:24 +00:00
logging.c	Clean up include files.	2010-01-18 21:07:24 +00:00
logging.h	Use "" instead of <> for configure.h and libdevmapper.h	2010-06-15 11:00:44 +00:00
Makefile.in	INSTALL rules updates	2010-04-09 21:42:48 +00:00