[Veritas-bu] NDMP backups going 30 hours
2001-10-02 12:53:19
Subject: |
[Veritas-bu] NDMP backups going 30 hours |
From: |
jlkennedy AT amcc DOT com (Jeff Kennedy) |
Date: |
Tue, 02 Oct 2001 09:53:19 -0700 |
Would the directive 'set HIST=N' help this situation?
~JK
Steve Kappel wrote:
>
> Jeff Kennedy wrote:
> >But the data has stoped being transferred 10 hours earlier. I have 3
> >ndmp backups that are running 24+ hours but no data has moved for over 6
> >hours. The filer is doing nothing and the ndmp session is halted
> >because the backup is complete, all it's waiting for is a close message
> >from NBU.
> >
> >I checked some stats on my NBU server and the root disk is fairly
> >hammered, it's reading at 3MB/sec with nothing else going on; no other
> >backups, no restores. And this server is dedicated to backups, no other
> >services.
> >
> >The images are all on an A5000 so it's not writing the images (btw, the
> >A5000 is idle too). The only thing I can figure is the BPFSMAP_TMP
> >directory that holds an inode map for each ndmp session. These files
> >are fairly huge, 300MB's to 800MB's each. What I'm wondering is what's
> >happening at this point in the backup? The inode maps are run at the
> >beginning of the backup on the filer so what is happening after the
> >backup is complete? Is this verification of some type?
>
> Node-based NDMP file history (that is messages containing "DIR" and
> "NODE" info) must be collected until the end of the backup and
> then processed to convert into the full path catalogs used by
> NetBackup. We call this the "bpfsmap phase". It is responsible
> for the temporary files in BPFSMAP_TMPDIR as well as the memory
> utilization. Both resources vary by the number of objects in
> the backup. See the NetBackup NDMP Admin Guide for information.
>
> The NDMP session cannot be finished nor the tape released as
> the converted catalog needs to be written to tape.
>
> The upcoming 4.5 release will radically improve this.
>
> __________________________________________________________________________
> Steve Kappel steve.kappel AT veritas DOT com
> VERITAS Software (Engineering) steve AT stevekappel DOT com (Personal)
--
=====================
Jeff Kennedy
Unix Administrator
AMCC
jlkennedy AT amcc DOT com
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