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- Newsgroups: comp.unix.aix
- Path: sparky!uunet!mnemosyne.cs.du.edu!mercury.cair.du.edu!diana.cair.du.edu!mbrookov
- From: mbrookov@diana.cair.du.edu (Matthew B. Brookover)
- Subject: AIX 3.2.3 backup by inode problems
- Message-ID: <1992Dec17.000138.25794@mercury.cair.du.edu>
- Sender: news@mercury.cair.du.edu (netnews)
- Organization: University of Denver
- Date: Thu, 17 Dec 92 00:01:38 GMT
- Lines: 50
-
- Hi, I am in rather desperate need of some help with backup by inode in
- AIX 3.2.3. I just upgraded from AIX 3.1.7, where we were doing a backup by
- inode with the system up and running. AIX 3.2.3 seems to have a lot of
- problems with this.
-
- Some back ground data: The system is an RS 6000/550 with 5 Maxtor PO-12s
- disks and 2 IBM 400MB disks. The 2 IBM disks contain the root volume group,
- the 5 Maxtor disks are user data and are in separate volume groups.
-
- Under 3.1.7 we never had any problem doing backup by inode on an active file
- system, under 3.2.3 I get errors like these:
-
- backup: The lseek call failed
- backup: Cannot read /dev/rhd4 [block -1419576480]: count=1024 got=-1
-
- The block number is always impossibly large or small.
-
- sometimes the backup will fail with the message:
-
- backup: 0511-250 There are more than 32 block read errors from 537214592.
- backup: backup: There is an error from which the system cannot recover.
- backup: the backup command has ended abnormally.
-
- or this message will come up:
-
- backup: The directory is damaged at inode number 63503.
-
- In all cases the block/inode number will change. If I unmount the partitions
- the backup will run fine. fsck will also run fine.
-
- I get errors from backup about 1 out of 5 times.
-
- I know that the backup by inode should be ran on an unmounted file system,
- but I need to do backups with the system up and I need to do incremental
- backups. Under AIX 3.1.7 I never had any problems.
-
- Did IBM change any thing in backup between 3.1.7 and 3.2.3?
-
- How many people do backup by inode on an active file system? any problems
- under 3.2.3 or 3.1.7?
-
- Any help would be greatly appreciated.
-
- thanks
-
- --
- Matthew B. Brookover
- Computing and Information Resources
- University of Denver
- mbrookov@diana.cair.du.edu
-