ADSM-L

Re: AIX 4.3.3 list of excludable files & filesystems

2001-08-09 11:05:16
Subject: Re: AIX 4.3.3 list of excludable files & filesystems
From: Herfried Abel <ha7 AT DAIMLERCHRYSLER DOT COM>
Date: Thu, 9 Aug 2001 17:04:44 +0200
1)
 Oracle Setup example: SW in the rootvg / All datafiles in one oraclevg
 Oracle Setup example: SW in the rootvg / All datafiles in one oraclevg
with AIX fs mirroring ( HW: mirror between two different SSA drawers ) /
archivelogs in a seperate vg with mirroring (same as datafiles). The good
old initORCL.ora within the rootvg. DB-Controlfiles mirrored by Oracle in
rootvg and oraclevg.

2)
I only once lost all disks of a non rootvg and so the whole vg( This was
I only once lost all disks of a non rootvg and so the whole vg( This was
when we were running on RAID-5) . Then I recreated the vg,lv and fss
manually.
In the other rare cases when the hardware failed - it was always possible
to import vg information from a still valid disk. ( all information about a
vg is written on every pv within this vg )

But its good idea to do a mkvgdata on all non-rootvgs. This dumps all
information necessary to recreate the vg in the /tmp/vgdata/... dir. - and
helps a lot if you have to rebuild a system manually. I run cronjobs an all
AIX-DB-Servers to get this info and send it to TSM.

herfried





Lisa Cabanas <CABANL AT MAIL.MODOT.STATE.MO DOT US>@VM.MARIST.EDU> on 09.08.2001
15:55:00

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Subject:  Re: AIX 4.3.3 list of excludable files & filesystems


Thanks for your reply, Herfried.  It brings to mind some other questions
regarding other volume groups.  Say you have all your Oracle stuff on one
or two different vgs.  Would you need to have done a savevg sometime in
the past to get the vg back, or at bare metal time would you need to
manually create the volume group and lvs and fss associated with it, and
then fill it with the data from TSM?

I went and looked for a bare metal Redbook for AIX and found the one from
1997 that deals with AIX 4.1-- is it still pretty applicable to 4.3.3?  I
wonder if TSM still "supports" a bare metal for AIX, or if it is now
unsupported like Win2K is?


thanks
lisa




Herfried Abel <ha7 AT DAIMLERCHRYSLER DOT COM>
08/09/2001 01:52 AM
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:     (bcc: Lisa Cabanas/SC/MODOT)
        Subject:        Re: AIX 4.3.3 list of excludable files &
filesystems



Lisa,

All the filesystems within the rootvg are backed up with a mksysb as long
as they are not explicit excluded from rthe mksysb. In general AIX does
not
delete (major) files on reboot as other UNIX's do ( eg /tmp ).
This is how we do the restore of an AIX machine :
1) restore mksysb
2) restore "OS-definitions" via TSM ( rootvg filesystems eg. /etc ) ( TSM
Client already restored by mksysb )
3) restore filesystems (non rootvg) via TSM
4) restore application-data ( DBs eg. ORACLE,SAPDB, MSSQL etc ) via TDP
Agents in necessary.

Step 2) depends on the time-difference between the mksysb and the last
config changes of AIX. Should not be necessary if you make a mksysb after
every config change , as all of the sysadmins do :-)

So what we do, we dont exclude files from the rootvg in the TSM backup (
AIX-OS is not really need much space ) but we exclude lots of temporary
application files. We think that at this point we can find a lot of
temporary data (eg. SAP rollfiles ).Of cause you have to know your
application / Datebase very well, so that you dont exclude a file by
mistake.

herfried





Lisa Cabanas <CABANL AT MAIL.MODOT.STATE.MO DOT US>@VM.MARIST.EDU> on 08.08.2001
18:20:26

Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>

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Subject:  AIX 4.3.3 list of excludable files & filesystems


Has anyone ever compiled a list of files and/or file systems that can be
excluded from backup either because they are dynamically created by the OS
at
reboot/syncvg etc
or because they are included in a mksysb?






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