Help in understanding how backup and restore works in any organization? Post: 302932564

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Operating Systems AIX Help in understanding how backup and restore works in any organization? Post 302932564 by aaron8667 on Thursday 22nd of January 2015 01:39:07 PM

01-22-2015

Registered User

Help in understanding how backup and restore works in any organization?

Please take your time to answer/comment. no urgency. it would help upcoming sysadmins like me in understanding how things work in real time.

OS: AIX
Middleware: Weblogic/WAS
Database: Oracle DB/IBM DB2
Backup s/w tools: not available as of now (except native OS commands/utilities)

I'm a newbie (jr SA), I knew little about the theoretical information (like commands) from Redbooks etc. But would like to know more from real time experienced professionals.

for instance;

As an AIX Sys Admin, we are supposed to backup AIX LPAR.
Meaning,
OS: rootvg (OS filesystems)
other software: like middleware/db s/w (uservg)
App: Application data (uservg)

* I understand that DB2/Oracle have their own native backup tools. But I am talking in terms of OS System Admin responsibilites.

I feel like, as an OS admin I need to make sure system(all components) is integrated all the time.

Here are my questions

1) How to Backup whole AIX LPAR (it may be App Server or Database server or fileserver) ?

I understand that mksyb(rootvg) and savevg(uservg) commands are available. Please provide your comments/procedure from based on your experience. (like How organizations implement stuff)

2) How to restore both OS and USER VG ?

scenarios
a) How to restore only 1 or 2 system config files (example crontab file) from backup?
b) how can we restore only OS (AIX) from particular time ?
c) how can we restore few application data files ?
d) how to restore App/DB data from last one month ?
e) how we can restore whole LPAR in case of system crash (need to get back to 3 days old state)?

And I believe that, some Oracle DB and WAS installations update OS filesystems. like they have files saved onto /home directory of their user /home/orcldir.

3) How can we make sure that both OS data and APP data are in sync after restore?

*Please answer all above questions by considering below things
A)if I have backup s/w like TSM or Netbackup tools in my environment.
B) another scenario " we do not have any backup s/w tools like TSM/NetBackup etc"

Please provide your comments/procedure (high-level steps) based on your experience.

Thanks in advance.

aaron8667

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LEARN ABOUT DEBIAN

vgcfgrestore

VGCFGRESTORE(8) 					      System Manager's Manual						   VGCFGRESTORE(8)

NAME

       vgcfgrestore - restore volume group descriptor area

SYNOPSIS

       vgcfgrestore [-d|--debug] [-f|--file filename] [-l[l]|--list] [-h|--help] [-M|--Metadatatype1|2] [-t|--test] [-v|--verbose] VolumeGroupName

DESCRIPTION

       vgcfgrestore  allows  you  to  restore  the metadata of VolumeGroupName from a text backup file produced by vgcfgbackup.  You can specify a
       backup file with --file.  If no backup file is specified, the most recent one is used.  Use --list for a list of the available  backup  and
       archive files of VolumeGroupName.

OPTIONS

       -l | --list -- List files pertaining to VolumeGroupName
	      List  metadata  backup  and  archive  files  pertaining  to VolumeGroupName.  May be used with the -f option.  Does not restore Vol-
	      umeGroupName.

       -f | --file filename -- Name of LVM metadata backup file
	      Specifies a metadata backup or archive file to be used for restoring VolumeGroupName.  Often this file has been created with  vgcfg-
	      backup.

       See lvm for common options.

REPLACING PHYSICAL VOLUMES

       vgdisplay  --partial  --verbose will show you the UUIDs and sizes of any PVs that are no longer present.  If a PV in the VG is lost and you
       wish to substitute another of the same size, use pvcreate --restorefile filename --uuid uuid (plus additional arguments as appropriate)	to
       initialise  it with the same UUID as the missing PV.  Repeat for all other missing PVs in the VG.  Then use vgcfgrestore --file filename to
       restore the volume group's metadata.

SEE ALSO

       lvm(8), vgcreate(8)

Sistina Software UK					 LVM TOOLS 2.02.95(2) (2012-03-06)					   VGCFGRESTORE(8)

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LEARN ABOUT DEBIAN

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