| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 1046.1 | | KITCHE::schott | Eric R. Schott USG Product Management | Tue Apr 22 1997 07:47 | 40 |
| >
> we have OMS-customer running ingres applications on D-Unix. And I would
> like to know what is the best way to defragment filesystems + the database
> (top of AdvFs).
>
> I would like to use Advfs defragmenter but is it Ok, to use it on
> filesystems containing ingres database files? If it's OK to use it may I
> run it while database is active or should I shut down ingres first.
> (I'm aware of the performance reduction)
The advfs defragment program can be run while the system is running.
When it completes, the files (from advfs's view) will be defragmented.
As to what you might do to ingres to improve performance, this is
something to check with ingres on.
>
> Or should I use some other method (ingres export/import) to defrgament
> database files ? I don't know much about ingres.
>
> Environment:
> Digital UNIX V3.2C
> Ingres 6.4/05
> AdvFs util AFA320
>
> Best regards,
> Heikki Ridanp��
> OMS - Finland
> DTN: 879-4863
>
> Ps. Is there any way to include/exclude specific files when running
> defragment or is it always for whole filesystem ?
It runs for the domain you start it on...
I suggest you upgrade to a more recent version of Digital UNIX,
and ensure you install the latest patch kits.
|
| 1046.2 | the 'migrate' command might help a little | UNIFIX::HARRIS | Juggling has its ups and downs | Tue Apr 22 1997 09:09 | 28 |
| Re: .0
> Ps. Is there any way to include/exclude specific files when running
> defragment or is it always for whole filesystem ?
While I do not know of any way to exclude specific files, you can
defragment files on a file by file basis using the 'migrate' command.
The 'migrate' command attempts to allocate new storage from contiguous
space.
This will work even on domains with only 1 volume in the domain.
The limitation is that if there is not enough contiguous space to
effectivily defragment the file, then the 'migrate' command will not be
able to create any. The 'defragment' command can move files to create
contiguous free space, so it can be more effective in defragmenting
files.
----
If you have customer requirements for the 'defragment' utility to
provide explicit "defragment this set of files" or to explicitly "DO
NOT touch this set of files" or treat these files a "Hot" files and
postition them for optimum performance, or even to just defragment the
free space, please enter a QAR and/or contact a product manager.
Bob Harris
|
| 1046.3 | Thank you | AKSELI::RIDANPAA | These boots are made for walking | Wed Apr 23 1997 01:12 | 9 |
|
Thank's for the quick responses !!
I ran defragment yesterday for all filesystems online without any
problems.
_heikki_
Re: .2 Than you for pointing out migrate command.
|