Consider yourself lucky!!
It took me 92 hours (almost 4 days) to restore a (ONE) 220k file from a
backupset (we are STILL working that one with TSM support). I can't tell you
how many times that I have heard "Restore backupset is not really designed
to restore specific files" for TSM support in the last couple of weeks.
The next restore took 8 days before it finally failed.
John stated a great text book reply that anyone considering using backupsets
should follow. I considered these facts before using backupsets and also
tested full and individual file restores with expected results.
Now in my hour of need, I am not getting expected results. No one can tell
me that it takes 92 hours for a 3584 with fiber channel drives to read a LTO
tape, no matter how large or small the block size is.
But as I said, we are still working this with support, just wanted to vent a
little.
TSM server: 4.2.2.2 (Win2K)
TSM client: 4.2.2.0 (Win2K)
-----Original Message-----
From: John Naylor [mailto:john.naylor AT SCOTTISH-SOUTHERN.CO DOT UK]
Sent: Tuesday, August 13, 2002 7:39 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: Restore backupset take very long
Miguel,
Restore backupset is not really designed to retore specific files
A backupset is a self contained object, desined for restore as a whole
independent of the database. The database does not hold any information on
the
location of individual files.
So when you are looking fto restore an individual file the backupset
tape/tapes
have to be read to find it.
John
Demaerel Miguel <miguel.demaerel AT brussels.sema.slb DOT com> on 08/13/2002
12:39:57
PM
Please respond to "ADSM: Dist Stor Manager" <adsm-l AT vm.marist DOT edu>
To: adsm-l AT vm.marist DOT edu
cc: (bcc: John Naylor/HAV/SSE)
Subject: Restore backupset take very long
Hoi
TSM server: 4.2.2.7 (AIX 5.1)
TSM client: 4.2.1.7 (Solaris 8)
I try to restore some files from a backupset (size 110 GB on 2 tapes)
tsm> restore backupset SOVI01_2002-08-06.130729665
/data11/oradata/PSVB/admin/files/lcnv/*20020417.dat.gz /opt/restore.
No problem so far....
But this takes very long
Result of restore:
Restore function invoked.
Session established with server ADSM: AIX-RS/6000
Server Version 4, Release 2, Level 2.7
Server date/time: 13-08-2002 11:46:50 Last access: 13-08-2002 11:22:06
ANS1247I Waiting for files from the server...
Restoring 46,592 /data11/oradata/PSVB/admin/files/lcnv -->
/opt/restore/lcnv [Done]
Restoring 5,673,249
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2A_TZS_CREDIT_DEBET_EURO_1_20
020417.
Restoring 7,556,400
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2A_TZS_CREDIT_DEBET_EURO_3_20
020417.
Restoring 11,659,832
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2A_TZS_CREDIT_DEBET_EURO_4_20
020417.
Restoring 50,129,976
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2B_TZS_CREDIT_DEBET_EURO_1_20
020417.
Restoring 31,002,144
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2B_TZS_CREDIT_DEBET_EURO_2_20
020417.
Restoring 32,800,605
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2B_TZS_CREDIT_DEBET_EURO_3_20
020417.
Restoring 38,666,328
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2B_TZS_CREDIT_DEBET_EURO_4_20
020417.
Restore processing finished.
Total number of objects restored: 8
Total number of objects failed: 0
Total number of bytes transferred: 169.53 MB
Data transfer time: 10.80 sec
Network data transfer rate: 16,063.53 KB/sec
Aggregate data transfer rate: 27.44 KB/sec
Elapsed processing time: 01:45:25
tsm>
There isn't action on the TSM server or on the client.
Top output.
last pid: 1655; load averages: 0.02, 0.01, 0.02
13:04:09
52 processes: 51 sleeping, 1 on cpu
CPU states: 99.9% idle, 0.0% user, 0.1% kernel, 0.0% iowait, 0.0% swap
Memory: 1024M real, 657M free, 106M swap in use, 1156M swap free
PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND
1655 root 1 50 0 2536K 1632K cpu/3 0:00 0.25% top
224 root 12 58 0 2688K 1400K sleep 15:07 0.00% mibiisa
216 root 1 59 0 27M 26M sleep 3:58 0.00% Xsun
1482 root 6 59 0 9032K 6376K sleep 0:11 0.00% dsmc
23409 root 1 59 0 6872K 2192K sleep 0:09 0.00% sdtperfmeter
23405 root 8 59 0 8808K 4240K sleep 0:05 0.00% dtwm
155 root 1 48 0 1952K 1072K sleep 0:04 0.00% cron
23398 root 6 49 0 8168K 4712K sleep 0:04 0.00% dtsession
23408 root 1 48 0 10M 3608K sleep 0:03 0.00% dtfile
23407 root 1 49 0 7640K 3496K sleep 0:01 0.00% dtterm
136 root 5 58 0 4040K 2640K sleep 0:01 0.00% automountd
146 root 10 58 0 3200K 1584K sleep 0:01 0.00% syslogd
23417 root 1 59 0 1800K 664K sleep 0:01 0.00% rpc.rstatd
23420 root 1 2 0 1032K 256K sleep 0:00 0.00% sh
23347 root 1 10 0 2304K 440K sleep 0:00 0.00% fbconsole
Restore from archive:
tsm> retrieve /data11/oradata/PSVB/admin/files/lcnv/*20020417.dat.gz
/opt/restore/
Retrieve function invoked.
Retrieving 46,592 /data11/oradata/PSVB/admin/files/lcnv -->
/opt/restore/lcnv [Done]
** Interrupted **
ANS1114I Waiting for mount of offline media.
Retrieving 7,556,400
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2A_TZS_CREDIT_DEBET_EURO_3_20
020417
Retrieving 11,659,832
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2A_TZS_CREDIT_DEBET_EURO_4_20
020417
Retrieving 31,002,144
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2B_TZS_CREDIT_DEBET_EURO_2_20
020417
Retrieving 32,800,605
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2B_TZS_CREDIT_DEBET_EURO_3_20
020417
Retrieving 38,666,328
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2B_TZS_CREDIT_DEBET_EURO_4_20
020417
Retrieving 5,673,249
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2A_TZS_CREDIT_DEBET_EURO_1_20
020417
Retrieving 50,129,976
/data11/oradata/PSVB/admin/files/lcnv/euro_stap2B_TZS_CREDIT_DEBET_EURO_1_20
020417
Retrieve processing finished.
Total number of objects retrieved: 8
Total number of objects failed: 0
Total number of bytes transferred: 169.28 MB
Data transfer time: 9.76 sec
Network data transfer rate: 17,750.91 KB/sec
Aggregate data transfer rate: 1,751.29 KB/sec
Elapsed processing time: 00:01:38
tsm>
What can be the reason? What a difference in time?
Restore backupset 01:45
Retrieve 00:02
Thanks in advance.
Greetings Miguel
/////
(o o)
==============oOO==(_)==OOo==============
Miguel Demaerel
System Engineer
Schlumberger
Raketstraat 98, B-1130 Brussels, Belgium
Tel +32 (0)2 724 93 17
Fax +32 (0)2 724 92 92
Email Miguel.Demaerel AT SLB DOT COM
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