Re: reiser4: fd -1 problem ?

["Vladimir V. Saveliev" <vs@namesys.com>]

Hello

Artur Makówka wrote:
> Hello, i've been investigating this problem for few weeks, and it seems
> reiser4 can be reason for this.
> 
> My apache process is from no clear reason suddenly peaking to 95% CPU
> usage and it stays that way until i kill it and start again.
> 
> It happens 6-7 times a day, i have hosting services on my server. I
> thought it was apache fault, but it strings shows this:
> 
> [pid 31610] munmap(0xb6f29000, 729088)  = 0
> [pid 31610] mmap2(NULL, 729088, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f29000
> [pid 31610] munmap(0xb6f29000, 729088)  = 0
> [pid 31610] mmap2(NULL, 729088, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f29000
> 
> 
> in endless loop, when this strange 'lock' happens.
> 
> is it a problem of fd -1 ? 

-1 is fine because MAP_ANONYMOUS is set.

> of course that could be also apache bug, that
> it can't handle wrong fd number, but why there is wrong fd number?
> 

they are using MAP_ANONYMOUS, fd is ignored in that case.

> i ran reiser4.fsck and it didnt help.
> 

what did reiser4.fsck report? No corruptions found?

> i use kernel 2.6.12.6 with latest 2.6.12 reiser4 patch, as it seemed the
> most stable from recent releases.
> 
> What could be the problem here, and how can i repair it ? should i keep
> running fsck.reiser4 until it finds it ?
> 
> it doesnt happen very often, but like i said 6-7 times a day, but it
> varies, sometimes it more often sometimes almost 0.
> 
> thanks in advance for response. (this is probably not Apache issue, i
> already asked for this many many times)
> 

so far it does not look as reiser4 problem either.

Flex, can we have apache server running on reiser4 for test purposes?