[nsd-users] Problems loading zone with nsd4

[Klaus Darilion]

Strange, on another server (64bit linux) I can load the zone although
the server only has 1GB Ram and 2GB swap.

regards
Klaus

On 18.06.2014 12:57, Klaus Darilion wrote:
> On 16.06.2014 09:12, W.C.A. Wijngaards wrote:
>> Hi Klaus,
>>
>> On 06/11/2014 10:28 AM, Klaus Darilion wrote:
>>> Hi!
>>
>>> I just tried to switch from nsd3 to nsd4 but nsd4 fails to load
>>> the zone. The zone is approx 170MB (Bind text format).
>>
>>> NSD4 is configured is slave. The zone is transferred but failed
>>> during loading with memory allocation error:
>>
>>> 10:17:16 nsd[3849]: zonefile at.zone does not exist 10:17:16
>>> nsd[3849]: nsd started (NSD 4.0.3), pid 3847 10:17:26 nsd[3847]:
>>> xfrd: zone at committed "received update to serial 1402473601 at
>>> 2014-06-11T10:17:26 from 83.136.34.4 TSIG verified with key
>>> rcode0-distribution" 10:17:26 nsd[4059]: rehash of zone at. with
>>> parameters 1 0 5 b81fd4d081abe7a4 10:17:59 nsd[4059]:
>>> mremap(/var/lib/nsd/nsd.db, size 1743910912) error Cannot allocate
>>> memory 10:17:59 nsd[4059]: could not add RR to nsd.db, disk-space? 
>>> 10:17:59 nsd[4059]: bad ixfr packet part 2007 in diff file for at. 
>>> 10:17:59 nsd[3849]: handle_reload_cmd: reload closed cmd channel 
>>> 10:17:59 nsd[3849]: Reload process 4059 failed with status 256, 
>>> continuing with old database 10:17:59 nsd[3847]: xfrd: zone at: soa
>>> serial 1402473601 update failed, restarting transfer (notified
>>> zone)
>>
>>
>>> The server has 8GB RAM, 512KB swap and 9GB of free disk space, and
>>> there is plenty of disk and ram left when nsd logs the memory
>>> error.
>>
>>> Thus, I suspect something else is going wrong. Any hints?
>>
>> I think it is the memory somehow, perhaps the memory overcommit kernel
>> settings in Linux are disallowing the allocation, even though there
>> seems to be enough memory (at current usage).  The most recent code
>> from the repository (not yet released, but passed regression tests)
>> has the option to use database: "" in nsd.conf and then the nsd.db is
>> not made, not mmapped, and thus a lot of disk and memory space is
>> freed.  That would likely make your system work.
> 
> May the problem be related that my test server uses a 32bit kernel?
> 
> regards
> Klaus
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