Thanks to Dr. Tom Blinn and others for the answer:
This is on V4.0x, right? If you have the AdvFS advanced utilities license,
then you can, as it says, use the "addvol" command to add a volume to the
domain that has more pre-allocation of the key resources, then force the
domain to use the new allocations by removing the volume that currently
has the old parameters in effect. Of course, you might need to do this
iteratively until ALL of the volumes have the right parameters, and in
the process, you'd fully defragment things, I suspect. You can do this
all on-line if you have the AdvFS advanced utilities license, otherwise
it is, as you suspect, vdump and vrestore time (or tar, for that matter,
if you are not interested in using vdump/vrestore).
Tom
--------------------------------------------
------------------------------------------------------------------
Steven C. Timm (630) 840-8525 timm_at_fnal.gov
http://home.fnal.gov/~timm/
Fermilab Computing Division/Operating Systems Support
Scientific Computing Support Group--Computing Farms Operations
---------- Forwarded message ----------
Date: Wed, 25 Apr 2001 11:59:29 -0400
From: "Dr. Thomas.Blinn_at_Compaq.com" <tpb_at_doctor.zk3.dec.com>
To: Steven Timm <timm_at_fnal.gov>
Subject: Re: BMT pageCnt is decreasing on AdvFS domain
>
> I have about six domains on my system that give the following
> warning when sys_check runs. At first I examined them all
> and they were heavily fragmented, but now I have defragmented
> them all and the warning message persists. Is there anything
> that can be done to get rid of the warning short of totally
> remaking the volume on a different disk and vdump/vrestore?
>
> If I have read the sys_check script correctly, it triggers this error
> message when it sees a low PageCnt in the second column, third line
> or better, such as the 10 that appears in the 2nd column 3rd line below.
> All the domains in question have something like this going on.
>
> Thanks for any help you can provide.
>
> Steve Timm
>
>
> ------------------------------------------------------
> Output of showfile -x M-6 for ksera41cdmn domain:
>
> Note: BMT pageCnt is decreasing on AdvFS ksera41cdmn domain.
> Check the domain immediately.
> This may indicate that a BMT extension could not (temporarily) get enough
> disk space. It can
> also be due to the domain being full or fragmented. Use the AdvFS
> Utilities command addvol to
> correct the problem and then invoke the rmvol command on the volume(s).
>
>
> Id Vol PgSz Pages XtntType Segs SegSz I/O Perf File
> fffffffa.0000 1 16 770 simple ** ** ftx 96% M-6
>
> extentMap: 1
> pageOff pageCnt vol volBlock blockCnt
> 0 2 1 32 32
> 2 128 1 21104 2048
> 130 10 1 33758576 160
> 140 161 1 27013792 2576
> 301 469 1 30646608 7504
> extentCnt: 5
>
> -----------------------------------------------------
>
> And defragment -v -n for the same domain.
>
> <ksera.fnal.gov> defragment -v -n ksera41cdmn
> defragment: Gathering data for domain 'ksera41cdmn'
> Current domain data:
> Extents: 1333
> Files w/extents: 1329
> Avg exts per file w/exts: 1.00
> Aggregate I/O perf: 100%
> Free space fragments: 193
> <100K <1M <10M >10M
> Free space: 0% 0% 1% 99%
> Fragments: 79 42 21 51
>
> -------------------------------------------------------------
>
>
> ------------------------------------------------------------------
> Steven C. Timm (630) 840-8525 timm_at_fnal.gov http://home.fnal.gov/~timm/
> Fermilab Computing Division/Operating Systems Support
> Scientific Computing Support Group--Computing Farms Operations
Received on Wed Apr 25 2001 - 17:23:47 NZST