On 07/01/11 06:48, Robert Pipca wrote:
Hi All,
I'm using LUSCA_HEAD-r14756 on an ISP network with about 3000 users.
I tested squid-2.7-stable7 and had the same error.
Everything is great, except that once in a while (ie. 2, 3 times a
week) Lusca dies and I get this assertion failed in the COSS code:
"-1 != sio->swap_filen"
Now, looking at the code in fs/coss/store_io_coss.c, I saw this:
sio->swap_filen = storeCossAllocate(SD, e, COSS_ALLOC_ALLOCATE);
The code of storeCossAllocate actually can return -1 in several
paths...so I'm wondering why lusca aborts on it, rather than returning
an error.
Since the COSS rebuild takes about an hour, the ISP takes a bandwidth
blow to the head everytime this happens.
Any clue why and how can it be fixed?
My cache_dir setup is like this:
cache_dir aufs /cache 69775 60 500 min-size=1048576
cache_dir coss /coss1 65520 max-size=1048575 max-stripe-waste=32768
block-size=4096 maxfullbufs=20
cache_dir coss /coss2 65520 max-size=1048575 max-stripe-waste=32768
block-size=4096 maxfullbufs=20
cache_dir coss /coss3 65520 max-size=1048575 max-stripe-waste=32768
block-size=4096 maxfullbufs=20
I don't have that much more on my logs, but if there's any info I can
provide you, I can try and dig it up.
Thanks for your help.
I saw the the aufs code returns NULL instead of sio if some part
doesn't work, so I change from:
assert (-1 != sio->swap_filen);
to
if (-1 == sio->swap_filen)
return NULL;
This opened a memory leak, but it's better than squid crashing.
But it didn't work either. I got "FATAL: Received Segment
Violation...dying" this morning.
Should I maybe test assign storeCossAllocate to a temporary variable
and only create the sio if that temporary variable is not -1? Would
this work?
I don't get why both squid and lusca are crashing from this change, though.
Your config shows ~69 GB of small files. Each cache_dir has a maximum
count of 2^31 files. It looks like that file count is being exceeded and
the overflow handling is broken.
Try 2.7.STABLE9 and see if its one of the bugs fixed there.
Amos
--
Please be using
Current Stable Squid 2.7.STABLE9 or 3.1.10
Beta testers wanted for 3.2.0.4
