cyrus-murder problems with database corruption in the frontend/master

[João Assad]

Derrick J Brashear wrote:

>  is there a munmap for every mmap

when I start cyrus, both mupdate master and slave comes up, so I get

cyrus/mupdate[2678]: MMAP at map_refresh: mmap(0, 408084480, PROT_READ, 
MAP_SHARED, 8, 0) = 1098067968
cyrus/mupdate[2679]: MMAP at map_refresh: mmap(0, 408084480, PROT_READ, 
MAP_SHARED, 8, 0) = 1098067968

The thing that got my attention is , cyrus have been running for a few 
hours now and every now and then I get this:

cyrus/mupdate[2679]: MUNMAP at map_refresh: munmap(1098067968, 
408084480) = 0
cyrus/mupdate[2679]: MMAP at map_refresh: mmap(0, 408100864, PROT_READ, 
MAP_SHARED, 8, 0) = 1718439936

mupdate PID 2679 called something that requested a map_refresh .. which 
decided to do a munmap and then mmap.
That happens quite often, and I dont see anything wrong with that.

On the other hand, mupdate PID 2678, after doing that initial 
map_refresh / mmap never munmaped or mmaped again.




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