topic Re: About make_recovery in Operating System - HP-UX

About make_recovery

WERWERS — Fri, 13 Jun 2003 01:59:44 GMT

I have installed ignite, i want to create a recovery tape, My tape driver is DDS4,(24GB /tape) ,but my VG00 is so large,about 50GB !
1)Can I use make_recovery to backup the VG00? and will the system notice me to change another tape?
2)Must I run it in single user mode?

Re: About make_recovery

Rajeev Shukla — Fri, 13 Jun 2003 02:01:21 GMT

Yes your system will prompt you to change the tape.
also its recomended to run in single user mode but not necessary.

Rajeev

Re: About make_recovery

WERWERS — Fri, 13 Jun 2003 02:10:27 GMT

In single user mode, shall i mount all system?

Re: About make_recovery

V.Tamilvanan — Fri, 13 Jun 2003 02:10:33 GMT

Hi,
Yes. The system will notice you to change the media.
It is not mandatory to run in single user mode. You can run on multi-user also.

My one cent suggestion : When u take a backup of vg00 about 50 GB on DDS4 it is definitely going to take a very long time and your recovery time will very very high. So why don't you exclude the directories or FS which are not part of OS hwen u take ignit backup. You can use other backup utility like fbackup,tar,DP,cpio,dump for taking other FS.
See the man pages of make_tape_recovery.

Just a thought.

HTH

Re: About make_recovery

Patrick Wallek — Fri, 13 Jun 2003 02:13:44 GMT

I would use make_tape_recovery, rather than make_recovery as make_recovery will eventually go away.

Use the following command:

# /opt/ignite/bin/make_tape_recovery -a /dev/rmt/0mn -I -v -x inc_entire=vg00

In order to be prompted you will have to run the command interacitvely from either the console or some other session.

Re: About make_recovery

Patrick Wallek — Fri, 13 Jun 2003 02:16:12 GMT

If you do it in single-user mode, yes you definitely need to mount all the filesystems.

Re: About make_recovery

Con O'Kelly — Fri, 13 Jun 2003 02:16:49 GMT

Hi

I wouldn't be inclined to backup 50GB with ignite. If you have put additional Logical Volumes in VG00 rather than just the normal OS ones then you can exclude some of them from the ignite backup as follows:

make_tape_recovery -a /dev/rmt/0mn -x inc_entire=vg00 -x exclude= -I -v

You can use multiple "-x exclude=" parameters.
You could also use "-i include=" instead of the -x options.

Cheers
Con

Re: About make_recovery

WERWERS — Fri, 13 Jun 2003 02:21:12 GMT

Can you tell me how long it will spend in backuping about 50GB on DDS4? And can you tell me how to backup VG00 by use make_tape_recovery? Thank you in advance.

# bdf
Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol3 204800 43887 151011 23% /
/dev/vg00/lvol1 299157 31583 237658 12% /stand
/dev/vg00/lvol8 2609152 177688 2279809 7% /var
/dev/vg00/lvol7 1032192 722650 290215 71% /usr
/dev/vg01/lvol1 35553280 24523008 10948624 69% /u03
/dev/vg00/lvol10 26755072 24008736 2703476 90% /u02
/dev/vg00/lvol9 2457600 1212296 1167510 51% /u01
/dev/vg00/lvol4 409600 4158 380189 1% /tmp
/dev/vg100/lvol30 49152000 13819800 35056168 28% /oradata
/dev/vg00/lvol6 647168 549954 91178 86% /opt
/dev/vg00/lvol5 262144 87151 164112 35% /home
/dev/vg00/lvo40 16547840 15280074 1228212 93% /backuporadata

Re: About make_recovery

twang — Fri, 13 Jun 2003 02:35:08 GMT

1. We daily backup oracle data 23 GB using DDS4 tape drive + DDS3 tape + fbackup: ~55 mins
2. You may use following command to create ignite tape for whole vg00 as:
# make_tape_recovery -A

Re: About make_recovery

Steven E. Protter — Fri, 13 Jun 2003 02:35:56 GMT

Okay.

1) Don't run the Ignite backup in single user mode.

2) Don't extend the backup to vg100 because the backup of the oracle databases will be useless.

3) If the oracle datafiles exceed 2 Gig they will be excluded from the archive unless you install the pax patch PHCO_26422

4) If you install the pax patch you might not be able to recover your system becasue pax_iux which is used to unpack images in Ignite doesn't hadle files bigger than 2 Gig. It just hangs and doesn't let you know why.

5)I would not use Ignite to create a multi-tape backup set. Its designed to reocver the boot volume not the data.

Alternate strategy:

Use the Ignite command in prior posts.
Shut the database and use fbackup to back up vg100 and the rest of the system.

Then recovery is decoupled and two step.

You boot off the Ignite tape,
It lays down the empty volume groups, then you restore from fbackup.

You only need to do the make_tape_recovery when you change the system, ie install patches, change vg config. This is probably less fequent than the need to backup the oracle data.

By decoupling you keep it to one tape and have a more flexible schedule. fbackup does prompt and handle multip tape backups well unless you run it in cron.

SEP

Re: About make_recovery

Con O'Kelly — Fri, 13 Jun 2003 02:43:49 GMT

Hi Kevin

My thoughts would be to exclude your /u01 /u02 & /backuporadata filesystems from the ignite the backup as I'm assuming they're oracle filesystems.
Use the commands given above to exclude them ie -x exlcude=/u01 etc.

Complete command
#make_tape_recovery -a /dev/rmt/0mn -x inc_entire=vg00 -x exclude=/u01 -x exclude=/u02 -x exclude=/backuporadata -I -v

Backup the rest of system using backup utilities such as fbackup, OmniBack etc.
Remember with Oracle you have to ensure it is shutdown prior to backup or look at hot backups.

Cheers
Con

Re: About make_recovery

Con O'Kelly — Fri, 13 Jun 2003 02:52:17 GMT

One point I should have emphasised is that its advisable to use a "-I (capital i)" option in the make_tape_recovery as this will allow you to interact with the ignite recovery should you need to. (i.e you may wish to resize Filesystems etc)

Cheers
Con

Re: About make_recovery

Steven E. Protter — Fri, 13 Jun 2003 03:01:23 GMT

Con,

You can interact with an Ignite recovery whether or not you use the option.

There is a prompt after booting from the tape that lets you make modifications. If something is out of whack on recovery, say disks have been radically re-arranged you'll end up at that prompt anyway.

Good points in the thread though.

SEP

Re: About make_recovery

yogesh_4 — Fri, 13 Jun 2003 03:17:45 GMT

Hi,
1. make_tape_recovery command will ask u to insert the second tape.
2. To give this command u need not to go to the single user mode.
3. Your root volume group is 50GB. With #make_tape_recovery -i option you can select which logical volume to be inculded in back , so I feel you can just include system related lvols.

Re: About make_recovery

Con O'Kelly — Fri, 13 Jun 2003 03:19:21 GMT

Thanks Steve. Must admit I'd always been operating under the assumption that you had to use the -I option for an interactive recovery.

Cheers
Con

Re: About make_recovery

WERWERS — Fri, 13 Jun 2003 03:28:15 GMT

Thank you everyone.
I shall do as follow,
1)#make_tape_recovery -a /dev/rmt/0mn -x inc_entire=vg00 -x exclude=/u01 -x exclude=/u02 -x exclude=/backuporadata -I -v

2)fbackup u01,u02,backuporadata
If one data file is large than 2GB,can I use fbackup?

Re: About make_recovery

Helen French — Fri, 13 Jun 2003 03:37:43 GMT

For the last question:

Yes, fbackup can be used to copy files which has sizes more than 2GB. I would consider moving to a more stable backup product - OB, Veritas etc. Also, make sure that you have all the latest patches installed.

Re: About make_recovery

WERWERS — Fri, 13 Jun 2003 05:04:53 GMT

New problem!!!(I can not use the tape.)
# ioscan -funC tape
Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
tape 0 0/0/1/0.6.0 stape CLAIMED DEVICE HP C1537A
/dev/rmt/0m /dev/rmt/0mnb /dev/rmt/c0t6d0BESTn /dev/rmt/c0t6d0DDSb
/dev/rmt/0mb /dev/rmt/c0t6d0BEST /dev/rmt/c0t6d0BESTnb /dev/rmt/c0t6d0DDSn
/dev/rmt/0mn /dev/rmt/c0t6d0BESTb /dev/rmt/c0t6d0DDS /dev/rmt/c0t6d0DDSnb
# ./make_tape_recovery
* Creating local directories for configuration files and archive.

======= 06/13/03 14:11:03 EAT Started ./make_tape_recovery. (Fri Jun 13
14:11:03 EAT 2003)
@(#) Ignite-UX Revision B.3.4.115
@(#) net_recovery (opt) $Revision: 10.547 $

* Testing pax for needed patch
* Passed pax tests.
* Checking Versions of Ignite-UX filesets
ERROR: Failed to open tape device /dev/rmt/0mn:No such device or address
(errno = 6).
ERROR: Check tape device failed.

======= 06/13/03 14:11:09 EAT make_tape_recovery completed unsuccessfully

Re: About make_recovery

Steven E. Protter — Fri, 13 Jun 2003 05:05:13 GMT

Hi kevin,

Enjoyed working on your issue.

as noted fbackup does files bigger than 2 Gig. As to whether its an Enterprise tool, I leave that up the management. If you have to use it, it WILL work.

Please take a look at this.

http://forums.itrc.hp.com/cm/QuestionAnswer/1,,0x022718276953d61190040090279cd0f9,00.html

Thanks.

SEP

Re: About make_recovery

WERWERS — Fri, 13 Jun 2003 05:15:20 GMT

New problem!!!(I can not use the tape.)