toblerone Absent Member.
Absent Member.
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Data Compression after Migration / Backup

Hi,

i have connected old NetWare NSS-Pools with a LUN move to a new OES2(Lx)
server.

(Deaktivate the Lun on Netware; Presenting the LUN on the SLES/OES and
creating the objects)

This runs without problems. But now, after a day or two, it seems that the
File get decompressed by the Backup (tivoli) and after that not compressed
again.

How can i check the NSS parameter for compression? It seems that nsscon does
not know the options.

e.g.:
#> nsscon nss /CompressionDailyCheckStartingHour
gives me an:
option "/CompressionDailyCheckStartingHour" is unknown for the current NSS
configuration and may require other NSS modules to be loaded.

Where are the parameter stored? On the pool? Or on the server? It is
possible that the new OES Server waits the default 14 Days during a file is
not touched to compress them?

Bernd
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Knowledge Partner
Knowledge Partner

Re: Data Compression after Migration / Backup

On OES2 Linux, there's 3 spots to disable compression:

Novell Documentation

section 21.5

This ASSUMES that the volume you imported/mounted has compression enabled on it in the first place (although I'd hazard that it does)
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Knowledge Partner
Knowledge Partner

Re: Data Compression after Migration / Backup

Hi.

On 06.07.2011 20:13, Bernd Nachtigall wrote:
>
> This runs without problems. But now, after a day or two, it seems that the
> File get decompressed by the Backup (tivoli) and after that not compressed
> again.


Does Tivoli use Novells TSA to backup NSS? If not, you're basically
toast, as all other ways to backup the data, e.g through linux / posix
access *will* kill compression, as to NSS it's not possible to
distinguish backup from regular file access. And regular file access
will eventually decompress the files. And as the backup probably
accesses the files every night, or at least for a full backup one a
week, they will never compress again.

CU,
--
Massimo Rosen
Novell Knowledge Partner
No emails please!
http://www.cfc-it.de
CU,
--
Massimo Rosen
Micro Focus Knowledge Partner
No emails please!
http://www.cfc-it.de
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