[Lustre-discuss] What exactly is punch statistic?
green at whamcloud.com
Fri Jun 17 22:38:55 PDT 2011
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.
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?
> 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.
>> On Thu, Jun 16, 2011 at 10:52 AM, Mervini, Joseph A <jamervi at sandia.gov> wrote:
>> 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... :) )
>> Joe Mervini
>> Sandia National Laboratories
>> High Performance Computing
>> jamervi at sandia.gov
>> Lustre-discuss mailing list
>> Lustre-discuss at lists.lustre.org
>> Support Guy
>> WhamCloud, Inc.
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