From: pSeries AIX Geek (aixgeek@YAHOO.COM)
Date: Thu Feb 12 2004 - 11:57:54 EST
So what happens now when you try to create a file
>4MB?
It looks like from your successive defragfs runs that
it becomes more and more efficient.
-pAG
--- cbaker@GOODYEAR.COM wrote:
> Here is the completed output of "defragfs -r"
> followed bu a few "defragfs"
>
> > defragfs -r /hpc/light-5
> statistics before running defragfs:
> number of free fragments 9200753
> number of allocated fragments 203316111
> number of free spaces shorter than a block 88506
> number of free fragments in short free spaces 460607
>
> statistics after running defragfs:
> number of free spaces shorter than a block 56651
> number of free fragments in short free spaces 378252
>
> other statistics:
> number of fragments moved 912128
> number of logical blocks moved 298731
> number of allocation attempts 67055
> number of exact matches 22711
>
>
> > defragfs /hpc/light-5
> statistics before running defragfs:
> number of free fragments 9146354
> number of allocated fragments 203370510
> number of free spaces shorter than a block 88511
> number of free fragments in short free spaces 460720
>
> statistics after running defragfs:
> number of free spaces shorter than a block 56794
> number of free fragments in short free spaces 378493
>
> other statistics:
> number of fragments moved 782335
> number of logical blocks moved 290520
> number of allocation attempts 66536
> number of exact matches 22732
>
>
> > defragfs /hpc/light-5
> statistics before running defragfs:
> number of free fragments 8634952
> number of allocated fragments 203881912
> number of free spaces shorter than a block 57272
> number of free fragments in short free spaces 380907
>
> statistics after running defragfs:
> number of free spaces shorter than a block 53739
> number of free fragments in short free spaces 372284
>
> other statistics:
> number of fragments moved 99185
> number of logical blocks moved 65488
> number of allocation attempts 11215
> number of exact matches 2401
>
>
> > defragfs /hpc/light-5
> statistics before running defragfs:
> number of free fragments 7042121
> number of allocated fragments 205474743
> number of free spaces shorter than a block 52943
> number of free fragments in short free spaces 375240
>
> statistics after running defragfs:
> number of free spaces shorter than a block 52575
> number of free fragments in short free spaces 373720
>
> other statistics:
> number of fragments moved 68578
> number of logical blocks moved 27565
> number of allocation attempts 4508
> number of exact matches 446
>
>
>
>
> Christopher M. Baker
> Senior Technical Support Analyst
> DSE/TCO
> Goodyear Tire and Rubber Company
>
> =================================================
> Contains Confidential and/or Proprietary
> Information.
> May not be copied or disseminated without the
> expressed
> written consent of The Goodyear Tire & Rubber
> Company.
> =================================================
>
>
>
>
> cbaker@GOODYEAR.
> COM To:
> aix-l@Princeton.EDU
> Sent by: IBM AIX cc:
> (bcc: Chris Baker/NA/GDYR)
> Discussion List
> Subject: Re: NFS file truncating
> <aix-l@Princeton
> .EDU>
>
>
> 02/11/2004 06:29
> PM
> Please respond
> to IBM AIX
> Discussion List
>
>
>
>
>
>
> /dev/nfs5lv00 1700134912 73600168 96% 337928
> 3% /hpc/light-5
>
> rdsnfs5:root: /
> > defragfs -q /hpc/light-5
> statistics before running defragfs:
> number of free fragments 9199989
> number of allocated fragments 203316875
> number of free spaces shorter than a block 88510
> number of free fragments in short free spaces 460609
>
> rdsnfs5:root: /
> > defragfs -r /hpc/light-5
> statistics before running defragfs:
> number of free fragments 9200753
> number of allocated fragments 203316111
> number of free spaces shorter than a block 88506
> number of free fragments in short free spaces 460607
>
> { Hung up on this report..........}
>
> Went ahead and typed in the "defragfs /hpc/light-5"
> after the report is
> done. Had to leave. Will send the results of the
> report and the defrag
> tomorrow.
>
> Thanks,
>
> Christopher M. Baker
> Senior Technical Support Analyst
> DSE/TCO
> Goodyear Tire and Rubber Company
>
> =================================================
> Contains Confidential and/or Proprietary
> Information.
> May not be copied or disseminated without the
> expressed
> written consent of The Goodyear Tire & Rubber
> Company.
> =================================================
>
>
>
>
> pSeries AIX Geek
> <aixgeek@YAHOO.C To:
> aix-l@Princeton.EDU
> OM> cc:
> (bcc: Chris
> Baker/NA/GDYR)
> Sent by: IBM AIX
> Subject: Re: NFS file
> truncating
> Discussion List
> <aix-l@Princeton
> .EDU>
>
>
> 02/11/2004 05:01
> PM
> Please respond
> to IBM AIX
> Discussion List
>
>
>
>
>
>
> Interesting. Still, I'd suspect fragmentation. If
> you run defragfs with the "what-if" option (sorry,
> don't have man pages in front of me), what does it
> report?
>
> [There's a -q and a -r flag on defragfs. I can't
> remember what each does, but the man page for
> defragfs
> will show you what options you have to run to show
> what it WOULD do, if you let it.]
>
> Another good test would be to use dd if see if you
> can
> replicate the same error by creating a 4MB+ file on
>
=== message truncated ===
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