Taper: unable to allocate buffers: Difference between revisions

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(solution to taper buffer allocation problems.)
 
 
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(On my OpenBSD system it was Postgresql).  
(On my OpenBSD system it was Postgresql).  


On OpenBSD the solution is to add the following lines to /etc/sysctl.conf
= On OpenBSD =
The solution is to add the following lines to /etc/sysctl.conf
kern.seminfo.semmni=256
kern.seminfo.semmns=2048
kern.shminfo.shmmax=50331648    # 48MB


kern.seminfo.semmni=256
I believe changing settings these requires a reboot, but I could be wrong. You might even need larger values if your database is working hard! Once the problem occurs, Amanda does not free the resources. You can free them manually with
kern.seminfo.semmns=2048
kern.shminfo.shmmax=50331648    # 48MB


I believe changing settings these requires a reboot, but I could be wrong.
ipcrm `ipcs -o | perl -ne ' { m/^m\s+(\d+)\s+(\d+)\s+\S+\s+operator operator\s+(\d)$/; print "-m $1 " if ($2 eq 0 and $3 eq 0) }'`


You might even need larger values if your database is working hard!
--[[User:Acgrillet|Acgrillet]] 08:10, 10 July 2009 (PDT)
 
Once the problem occurs, Amanda does not free the resources. You can free them manually with
 
ipcrm `ipcs -o | perl -ne ' { m/^m\s+(\d+)\s+(\d+)\s+\S+\s+operator operator\s+(\d)$/; print "-m $1 " if ($2 eq 0 and $3 eq 0) }'`

Latest revision as of 15:33, 10 July 2009

Why do I get taper unable to allocate buffers?

This is beause taper requires sysv shared memory or semaphores, and there is none, or not enough. On *BSD systems. you may get this on a system that previously worked because some other program has reserved the resources available. (On my OpenBSD system it was Postgresql).

On OpenBSD

The solution is to add the following lines to /etc/sysctl.conf 

kern.seminfo.semmni=256
kern.seminfo.semmns=2048
kern.shminfo.shmmax=50331648    # 48MB

I believe changing settings these requires a reboot, but I could be wrong. You might even need larger values if your database is working hard! Once the problem occurs, Amanda does not free the resources. You can free them manually with 

ipcrm `ipcs -o | perl -ne ' { m/^m\s+(\d+)\s+(\d+)\s+\S+\s+operator operator\s+(\d)$/; print "-m $1 " if ($2 eq 0 and $3 eq 0) }'`

--Acgrillet 08:10, 10 July 2009 (PDT)

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