Hi, I have been covertly trying for a long time to find out what punch means as far a lustre llobdstat output but have not really found anything definitive. Can someone answer that for me? (BTW: I am not alone in my ignorance... :) ) Thanks. === Joe Mervini Sandia National Laboratories High Performance Computing 505.844.6770 jamervi at sandia.gov
It is called when truncating a file - afaik it is showing you the number of truncates, more or less. cliffw On Thu, Jun 16, 2011 at 10:52 AM, Mervini, Joseph A <jamervi at sandia.gov>wrote:> Hi, > > I have been covertly trying for a long time to find out what punch means as > far a lustre llobdstat output but have not really found anything definitive. > > Can someone answer that for me? (BTW: I am not alone in my ignorance... :) > ) > > Thanks. > ===> > Joe Mervini > Sandia National Laboratories > High Performance Computing > 505.844.6770 > jamervi at sandia.gov > > > > > _______________________________________________ > Lustre-discuss mailing list > Lustre-discuss at lists.lustre.org > http://lists.lustre.org/mailman/listinfo/lustre-discuss >-- cliffw Support Guy WhamCloud, Inc. www.whamcloud.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lustre.org/pipermail/lustre-discuss/attachments/20110616/7874b381/attachment.html
Hi Cliff - it''s been a long time... It seems to me that file truncation is a bad thing - i.e., file writes are not completed. Is this an invalid assessment? Thanks, Joe = Joe Mervini Sandia National Laboratories Dept 09326 PO Box 5800 MS-0823 Albuquerque NM 87185-0823 On Jun 16, 2011, at 12:52 PM, Cliff White wrote: It is called when truncating a file - afaik it is showing you the number of truncates, more or less. cliffw On Thu, Jun 16, 2011 at 10:52 AM, Mervini, Joseph A <jamervi at sandia.gov<mailto:jamervi at sandia.gov>> wrote: Hi, I have been covertly trying for a long time to find out what punch means as far a lustre llobdstat output but have not really found anything definitive. Can someone answer that for me? (BTW: I am not alone in my ignorance... :) ) Thanks. === Joe Mervini Sandia National Laboratories High Performance Computing 505.844.6770 jamervi at sandia.gov<mailto:jamervi at sandia.gov> _______________________________________________ Lustre-discuss mailing list Lustre-discuss at lists.lustre.org<mailto:Lustre-discuss at lists.lustre.org> http://lists.lustre.org/mailman/listinfo/lustre-discuss -- cliffw Support Guy WhamCloud, Inc. www.whamcloud.com<http://www.whamcloud.com/> -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lustre.org/pipermail/lustre-discuss/attachments/20110618/2412f30e/attachment.html
Hello!
No, it''s not a bad thing. It''s just another operation like
others.
When apps do truncate() call, the punch RPCs happen.
When apps do open(O_TRUNC) call, the punch RPCs happen too.
Bye,
Oleg
On Jun 18, 2011, at 12:28 AM, Mervini, Joseph A wrote:
> Hi Cliff - it''s been a long time...
>
> It seems to me that file truncation is a bad thing - i.e., file writes are
not completed. Is this an invalid assessment?
>
> Thanks,
> Joe
> =>
> Joe Mervini
> Sandia National Laboratories
> Dept 09326
> PO Box 5800 MS-0823
> Albuquerque NM 87185-0823
>
>
> On Jun 16, 2011, at 12:52 PM, Cliff White wrote:
>
>> It is called when truncating a file - afaik it is showing you the
number of truncates, more or less.
>> cliffw
>>
>>
>>
>> On Thu, Jun 16, 2011 at 10:52 AM, Mervini, Joseph A <jamervi at
sandia.gov> wrote:
>> Hi,
>>
>> I have been covertly trying for a long time to find out what punch
means as far a lustre llobdstat output but have not really found anything
definitive.
>>
>> Can someone answer that for me? (BTW: I am not alone in my ignorance...
:) )
>>
>> Thanks.
>> ===>>
>> Joe Mervini
>> Sandia National Laboratories
>> High Performance Computing
>> 505.844.6770
>> jamervi at sandia.gov
>>
>>
>>
>>
>> _______________________________________________
>> Lustre-discuss mailing list
>> Lustre-discuss at lists.lustre.org
>> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>>
>>
>>
>> --
>> cliffw
>> Support Guy
>> WhamCloud, Inc.
>> www.whamcloud.com
>>
>>
>
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss
--
Oleg Drokin
Senior Software Engineer
Whamcloud, Inc.