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On 01/27/2017 08:05 PM, Andrew Hanushevsky wrote:
> Hi Adrian,
Hi!

> The problem likey is that you are getting a lot of requests at once and
> each time you get a request to create a file he oss.alloc directive says
> that 20% of the requested amount (or 4 GB if the amount was not
> specified) is to be reerved. If you get enough allocation requests the
> sum of the reserve amounts will exceed the available space. At that
> point you get the error. I assume the error comes from the server not
> the redirector.
so i set up
oss.alloc 20G 0 0

but today i got a lot of messages of "no space left on device" and this 
is happening only on this server ..
ssh_run_cmd storage02 grep "no space left" 
/home/aliprod/alicexrdrun/logs/server/xrdlog | wc -l
452

space is enough :
[localhost:1094] / > query space /
oss.cgroup=public&oss.space=19685898543104&oss.free=352717732414&oss.maxf=184908956313&oss.used=49994824333&oss.quota=-1

Any idea how can i fix this?
my only idea now is to declare the space and files lost to the 
experiment (with a full listing of the current files) and start the 
server from scratch ...

Thank you!!
Adrian

>
> Andy
>
> On Fri, 27 Jan 2017, Adrian Sevcenco wrote:
>
>> Hi! I have a strange situation where i receive from time to time
>> errors like this :
>> 170127 13:21:18 18229 aliprod.14481:34@[::ffff:172.18.3.237]
>> XrootdResponse: 0100 sending err 3009: Unable to create
>> /home/aliprod/data/13/00751/b616b1c8-e482-11e6-98ad-779a6f1c6846; no
>> space left on device
>>
>> the thing is that i have plenty of space left :
>> aliprod@storage02: server $ df -h | grep storage
>> /dev/sda1       9.0T  8.8T  216G  98% /storage01
>> /dev/sdb1       9.0T  8.8T  203G  98% /storage02
>>
>> on the server i have this setting :
>> aliprod@storage02: server $ grep alloc xrootd.xrootd.cf
>> oss.alloc 20G 20 0
>>
>> and on redirector i have :
>> aliprod@rd: manager $ grep cms.space xrootd.xrootd.cf
>> cms.space min 48g 16g
>>
>> how can i debug why i get this errors?
>>
>> Thank you!
>> Adrian
>>
>>
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>


-- 
----------------------------------------------
Adrian Sevcenco, Ph.D.                       |
Institute of Space Science - ISS, Romania    |
adrian.sevcenco at {cern.ch,spacescience.ro} |
----------------------------------------------


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