Re: [foxboro] Question about error at end of tape backup of AW51D I/Aver 6.3
- From: <Jack.Easley@xxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Wed, 8 Oct 2008 08:54:00 -0500
This is from UNIX 6.12, not 6.3, so take it with a grain of salt.
If a bad block on your hard drive is causing the dump/dd to fail as
indicated below, run the "format-0-analyze-read" utility first on the
hard drive which will remove the bad block(s) and allow the dump/dd to
succeed. I am assuming your hard-drive is disk 0 in my examples of the
format utility. The "format-0-analyze-read" utility will remove only bad
blocks, which are not functional anyway. If the format utility prompts
you to actually remove each bad block it finds; always answer yes. Any
bad blocks are an indication your hard-drive is starting to fail. I
always replace hard-drives if a bad block(s) is/are found on more than
one occasion on a hard drive.
Be aware that although removing bad blocks do not cause the next reboot
to fail, they are an indication that a block(s) somewhere on your hard
drive has failed. If this block happens to be part of a required boot
file, the station will not come back up. Of course, if such was the
case, the station would have not rebooted with the bad block anyway.
Anytime I run format-0-analyze-read and do find a bad block, I always do
a backup in multi-user mode before rebooting, to savage what I can in
case the station will not reboot. Some additional precautions to take if
this is an AP or AW are to make fresh savealls for the AW and save any
historian configuration(s) to a file before making your multi-user
backup.
Jack Easley
Sr. I&C Technician
Luminant Power, Martin Lake Plant
Phone 903.836.6241
jack.easley@xxxxxxxxxxxx
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Gardner, Mark
Sent: Wednesday, October 08, 2008 8:00 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] Question about error at end of tape backup of
AW51D I/Aver 6.3
The message is indicating a "read" error on the Informix partition.
This slice is a "raw data" partition "NOT" a "ufsdump" of a unix file
system (UFS). The Informix partition id "dd" to the tape.
As a test to verify there are some bad blocks on this partition
You can try the following and expect to see the same or similar error
message.
From the utility line try:
# dd if=/dev/dsk/c0t0d0s5 of=/dev/null bs=128b
The backups of your UFS file systems may be fine.
You can check the integrity of those using the "ufsrestore" utility.
For more information using the "ufsrestore" try the man pages or
Document B0193ND I/A Series(r) System Administration Guide
for 50 Series Systems (Solaris(tm) 2.X) section 3 Restore utilitys.
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
On Behalf Of Rarden, Tim
Sent: Tuesday, October 07, 2008 1:43 PM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] Question about error at end of tape backup of AW51D
I/Aver 6.3
Group,
Getting the following error during backup of AW51D. Has I/A ver 6.3
installed. Is my backup OK? Any help would be appreciated!!
Backing up Informix Raw-Partition
Warning: /pci@1f,0/pci@1,1/ide@3/dad@0,0 (dad0):
Uncorrectable data error: Block d5ff0
Warning: /pci@1f,0/pci@1,1/ide@3/dad@0,0 (dad0):
Warning: interrupt level 4 not serviced
Warning: md: d13: read error on /dev/dsk/c0t0d0s5
Read: I/O Error
3429 + 0 Records in
3429 + 0 Records out
Backing Up Raw_Partition /dev/rdsk/c0t0d0s3
dad0: disk okay
read: I/O Error
95 + 0 records in
95 + 0 records out
Remove Tape and store
Dump Complete
Best Regards,
Tim Rarden
Process Control Engineer
SMART PAPERS HOLDINGS LLC
"You're Brilliant. We're SMART. Imagine the Possibilities"
601 N. B Street
Hamilton, OH 45013
(Direct) 513-869-5278
(Cell) 513-240-6680
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