Hi -
I have had an ongoing problem with my backups not completing. I'm doing
backups at 4:30 AM, with the system still up. This machine is our web /
dns / mail server so there are no shell users logged in.
Following is the script that I run every night as root, via cron, and a
sample of the type of error I'm getting. I've tried cleaning the tape
drive. Is there something wrong with my script?
Any ideas would be very much appreciated. I'll summarize.
Thanks,
Derrick Miller
Herald-Mail Co.
Hagerstown, MD, USA
derrickm_at_herald-mail.com
phuture_at_fred.net
---------- Script I use for backup ----------
# full_nightly_backup.sh - backup both filesystems to tape
cd /
# Spit out stdio / stderr to be mailed to administrator each night
echo "Beginning backup for:"
date
# Commit disk writes
/usr/sbin/sync
# Bring tape drive online and rewind tape
/usr/bin/mt -f /dev/nrmt0h online
/usr/bin/mt -f /dev/nrmt0h rewind
# Backup / and /usr and /usr2 filesystems
/usr/sbin/dump -0uf /dev/nrmt0h /
/usr/sbin/dump -0uf /dev/nrmt0h /usr
/usr/sbin/dump -0uf /dev/nrmt0h /usr2
# Take tape drive offline
/usr/bin/mt -f /dev/nrmt0h rewoffl
# Audi
echo "Backup completed for:"
date
---------- Results of backup ----------
Beginning backup for:
Fri Feb 14 03:45:00 EST 1997
dump: Dumping from host mufasa.herald-mail.com
dump: Date of this level 0 dump: Fri Feb 14 03:45:22 1997 EST
dump: Date of last level 0 dump: the start of the epoch
dump: Dumping /dev/rrz0a (/) to /dev/nrmt0h
dump: Mapping (Pass I) [regular files]
dump: Mapping (Pass II) [directories]
dump: Estimate: 35023 tape blocks on 0.08 volume(s)
dump: Dumping (Pass III) [directories]
dump: Volume 1, tape # 0001, begins with blocks from i-node 2
dump: Dumping (Pass IV) [regular files]
dump: 1.43% done -- finished in 00:03
dump: Actual: 35087 tape blocks on 1 volume(s)
dump: Feet remaining on tape: 2119
dump: Volumes used: 1
dump: Level 0 dump on Fri Feb 14 03:45:22 1997 EST
dump: Dump completed at Fri Feb 14 03:46:20 1997 EST
dump: Dumping from host mufasa.herald-mail.com
dump: Date of this level 0 dump: Fri Feb 14 03:46:20 1997 EST
dump: Date of last level 0 dump: the start of the epoch
dump: Dumping /dev/rrz0g (/usr) to /dev/nrmt0h
dump: Mapping (Pass I) [regular files]
dump: Mapping (Pass II) [directories]
dump: Estimate: 491413 tape blocks on 1.10 volume(s)
dump: Dumping (Pass III) [directories]
dump: Volume 1, tape # 0001, begins with blocks from i-node 2
dump: 0.10% done -- finished in 00:49
dump: Dumping (Pass IV) [regular files]
dump: 35.95% done -- finished in 00:08
dump: Write error -- wanted to write: 10240, only wrote: -1
slave_work(): write(): I/O error
dump: Write error - /dev/nrmt0h, volume 1, 1261 feet -- cannot recover
dump: Cannot fopen /dev/tty for reading
query(): fopen(): No such device or address
dump: Cannot remove shared memory
remove_shared_memory(): shmctl(): Invalid argument
dump: SIGTERM received -- Try rewriting
dump: Unexpected signal -- cannot recover
dump: Dumping from host mufasa.herald-mail.com
dump: Date of this level 0 dump: Fri Feb 14 03:53:17 1997 EST
dump: Date of last level 0 dump: the start of the epoch
dump: Dumping /dev/rrz0h (/usr2) to /dev/nrmt0h
dump: Mapping (Pass I) [regular files]
dump: Mapping (Pass II) [directories]
dump: Estimate: 56418 tape blocks on 0.13 volume(s)
dump: Dumping (Pass III) [directories]
dump: Volume 1, tape # 0001, begins with blocks from i-node 2
dump: Dumping (Pass IV) [regular files]
dump: 0.89% done -- finished in 00:03
dump: Write error -- wanted to write: 10240, only wrote: -1
slave_work(): write(): I/O error
dump: Write error - /dev/nrmt0h, volume 1, 20 feet -- cannot recover
dump: Cannot fopen /dev/tty for reading
query(): fopen(): No such device or address
dump: Cannot remove shared memory
remove_shared_memory(): shmctl(): Invalid argument
dump: SIGTERM received -- Try rewriting
dump: Unexpected signal -- cannot recover
/dev/nrmt0h: No such device or address
Backup completed for:
Fri Feb 14 03:54:12 EST 1997
*************************************************
Cron: The previous message is the standard output
and standard error of one of your cron commands.
Received on Mon Feb 17 1997 - 18:30:01 NZDT