Greetings,
System Information:
Server: Dell PowerEdge 2650
OS: CentOS 4.2 (fully updated)
SCSI Card: LSI Logic / Symbios Logic LSI8952U
Tape Unit: Exabyte Magnum 1x7 LTO-3 Tape Library w/
IBM Ultriam-TD3 drive
Bacula: 1.38.5 (SQLite RPM)
rpm -qi output and tapeinfo output are at the end of the email.
The Problem:
I'm having problems using bextract to get past a read-error on a backup
tape. I was asked to restore a specific directory and everything
underneath it from tape and encountered a read error during the restore,
so I set up a bextract command to pull all those files from the tape
volumes for me instead:
/usr/sbin/bextract -d 200 -i /tmp/bextract.files \
-p -V 'ARC002|MON008|MON009|MON010' \
/dev/nst0 /local/restore
/tmp/bextract.files:
/home/grad/fei/daffy/researches/Thermal
The bextract runs for a few minutes and then starts stuttering. It
hangs on a read() system call to /dev/nst0 (the tape devices for the
Ultrim-TD3) for anywhere from a few seconds to several minutes, and then
proceeds again for a while. This happens so much that I've been unable
to complete extracting the files.
When the bextract is hung, 'ps axf' shows it is in 'Dl+' status and
cannot be terminated by kill or 'kill -9'.
Solutions tried:
Rebooted the server
Cleaned the tape drive (multiple times)
Shut down all other activity on the backup server
Tried running the bextract on just ARC002 and MON008. Both exhibit the
problem.
I *have* successfuly completed a 'bls' of the ARC002 volume and this
configuration passes the btape tests with flying colors so I don't think
there is anything wrong with the basic configuration.
Anyone have advice to offer?
--[Lance]
$ rpm -qi bacula-sqlite output:
Name : bacula-sqlite Relocations: (not relocatable)
Version : 1.38.5 Vendor: The Bacula Team
Release : 1 Build Date: Thu Jan 19
15:07:04 2006
Install Date: Thu Jan 19 15:12:10 2006 Build Host:
riffraff.isds.duke.edu
Group : System Environment/Daemons Source RPM:
bacula-1.38.5-1.src.rpm
Size : 15002051 License: GPL v2
Signature : (none)
Packager : D. Scott Barninger <[EMAIL PROTECTED]>
URL : http://www.bacula.org/
Summary : Bacula - The Network Backup Solution
I rebuilt the RPM because at the time there was not an RPM for Centos4
available that I could find.
riffraff:brown /tmp $ sudo tapeinfo -f /dev/sg3
Password:
Product Type: Tape Drive
Vendor ID: 'IBM '
Product ID: 'ULTRIUM-TD3 '
Revision: '58R0'
Attached Changer: No
SerialNumber: '1210034166'
MinBlock:1
MaxBlock:16777215
SCSI ID: 1
SCSI LUN: 0
Ready: yes
BufferedMode: yes
Medium Type: 0x38
Density Code: 0x44
BlockSize: 0
DataCompEnabled: yes
DataCompCapable: yes
DataDeCompEnabled: yes
CompType: 0x1
DeCompType: 0x1
BOP: yes
Block Position: 0
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