We have been using the suspend option as part of our back up plan, since we moved to
UV 10.0.19 earlier this year, we are on AIX 5.2 ML3 at this time.
Our back up process is scripted at the AIX level. We suspend UniVerse, then run sync
several times, then break a 3rd set of mirrors, and unsuspend UniVerse. This process
takes about 10 minutes to complete. We were using the AIX snap on and snap off
commands, to take a snap shot of our system. However, IBM AIX has an issue with the
snap logic, which can cause the system to hang - and the only way to get it back, is a
hard reboot - which is not pretty. IBM AIX is working on this problem and with luck
will have a fix in the next few weeks. Once they do, using the snap at AIX, only takes
a minute or two and then UnVerse can be unsuspended. The back up then takes place on
the snap area, once the back up is completed, you "snap off" and the snap area is
removed.
Once IBM has the snap correction in place, we will be moving to AIX 5.2 ML4, which is
the version IBM is working on for the snap correction. It is my understanding that ML4
has other changes for UniVerse and for JFS2 file systems, which we are using.
We are 24X7 and this has worked great for us (other than the snap issue). The users
are able to continue to access the database for inquiry during the suspend, if they
try to write, they will "hang" until the database is unsuspended. Our users know what
time each night this will take place and know to not break out or reboot etc during
this time.
Hope this helps, feel free to drop me a note if you would like more information.
Thanks and have a great day!
Donald H. Cutting
A. N. Deringer, Inc.
D. B. A. / Systems Analyst
Tel. (802) 524-8172
[EMAIL PROTECTED]
www.anderinger.com
U.S. Customs Brokers, International Freight Forwarders, Warehousing
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Tom Dodds
Sent: Monday, October 25, 2004 9:47 AM
To: [EMAIL PROTECTED]
Subject: [U2] Suspend.files
Has anyone had any experience with using the SUSPEND.FILES command as a
method of acquiring a clean backup of a UniVerse system. We are running UV
10.2.2 under AIX 5.2.2.
Any insights would be appreciated.
Tom Dodds
[EMAIL PROTECTED]
630-235-2975 Cell
708-482-4510 Office
---
u2-users mailing list
[EMAIL PROTECTED]
To unsubscribe please visit http://listserver.u2ug.org/
---
u2-users mailing list
[EMAIL PROTECTED]
To unsubscribe please visit http://listserver.u2ug.org/
