[solved] Litespeed webserver stops working while cleancache script is runnning

G

gnu.smtp

Member
#1
#1
Hello guys,

We have a number of server with litespeed running and most of them is having issues with the cleancache script running. While running these we are not even able to do any thing on litespeed admin, not able to switch to Apache nor even able to get the sites working while running these scripts.

Any body facing the same issue any suggestion or fix for this.

4346 ? DN 0:00 find /tmp/lshttpd/swap/e -type f -mtime +1 -delete
14347 ? DN 0:00 find /tmp/lshttpd/swap/e -type f -mtime +1 -delete

We are not even able to kill these process and only thing we can do is to reboot the server to get the apache/litespeed working.

Any idea why those are not able to get killed ? and what can be done to get this fixed for ever
 
Last edited by a moderator:
W

webizen

Well-Known Member
#2
#2
gnu.smtp said:
...
4346 ? DN 0:00 find /tmp/lshttpd/swap/e -type f -mtime +1 -delete
14347 ? DN 0:00 find /tmp/lshttpd/swap/e -type f -mtime +1 -delete

We are not even able to kill these process and only thing we can do is to reboot the server to get the apache/litespeed working.

Any idea why those are not able to get killed ? and what can be done to get this fixed for ever
Click to expand...
/tmp/lshttpd/swap is used by LSWS swap. you need point your cache storage to a different place (out side of /tmp/lshttpd/swap)
 
G

gnu.smtp

Member
#3
#3
Hello,

Thanks you,

if we move this to home folder, will that be albe to get deletted if needed ? Also Where to get this done ? from litespeed admin panel ?
 
W

Wirta

New Member
#4
#4
Re:

It's interesting to note that litespeed is having issues with cleancache script. I haven't tried myself but going to give it a try and see how I can help you. I'm not an expert however I will try my best. Good luck and let me know if you're able to solve the problem.
 
W

webizen

Well-Known Member
#5
#5
gnu.smtp said:
Hello,

Thanks you,

if we move this to home folder, will that be albe to get deletted if needed ? Also Where to get this done ? from litespeed admin panel ?
Click to expand...
Yes, you can point your cache storage path to somewhere under home folder such as /path/to/home/dir/diskcache. you need to manually create the folder first and point that in LSWS admin console (Configuration => Server => Cache)
 
G

gnu.smtp

Member
#6
#6
Hello,

We have changed the cache directory and swap directory to /home partition.

But this has not helped with the issue. Also it is not possible to terminate them, once they start running.

We cannot afford this type of frequent downtimes with a paid solution like litespeed.
 
W

webizen

Well-Known Member
#7
#7
You need to leave swap directory in /tmp/lshttpd unchanged and ONLY change diskcache directory to a different place (e.g. /home/diskcache). The cleancache script should only purge files under cache directory NOT others (i.e. swap, etc). Your problem is cleancache script removes files under swap as you mixed cache and swap together causing lsws inaccessible.
 
Last edited:
G

gnu.smtp

Member
#8
#8
Hello,

We had swap set to default, ad made the change when the issue persistsed even after changing cache to /home.

The current setup is as follows.

swap directory : /tmp/lshttpd/

cache directory : /home/litespeed/cache

Caching is disabled on the server. We are monitoring with this setup and will keep you posted.
 
N

NiteWave

Administrator
#9
#9
swap directory : /tmp/lshttpd/
Click to expand...
the default swap is /tmp/lshttpd/swap

is your /tmp NFS ? it may be very slow per some of our past experience.

if so, better to use local disk as /tmp

also, please run iostat to check if some of hard disks have high i/o wait issue.
 
G

gnu.smtp

Member
#10
#10
NiteWave said:
the default swap is /tmp/lshttpd/swap
Click to expand...
I have changed this to /tmp/lshttpd/swap. But we have problems with cron/script clearing swap directory also.

NiteWave said:
is your /tmp NFS ? it may be very slow per some of our past experience.
if so, better to use local disk as /tmp
Click to expand...
all drives on the server are local.

NiteWave said:
also, please run iostat to check if some of hard disks have high i/o wait issue.
Click to expand...
IO wait goes a bit high when the script/cron runs. But this affects only httpd service. Also we are unable to switch to apache when the issue occurs.

Thank you.
 
N

NiteWave

Administrator
#13
#13
I think this is where the main problem is --- please fix it before trouble-shooting other issues. maybe hard disk has hardware problem.
 
G

gnu.smtp

Member
#14
#14
Hello,

The issue is only when we try to check the size of /tmp/lshttpd directory or its sub directories.

"du" operation on other files and directories work fine.
 
G

gnu.smtp

Member
#17
#17
Hello,

The litespeed was froze again when the clean cache script was running. We could neither kill or restart the webserver. If you could let us know your mail id I could provide you the server details to check further.

Thank you,
 
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