FreeBSD Kernel Panic during backup to USB external drive.

[Robert Jameson]

Hello everyone, recently i've been experience kernel panics whenever
attempting to run my backup to my usb external drive.
Here is the information i have, whatever else is needed please reply, thank
you.


(02:11 PM):(root at cube)/var/crash$ kgdb /boot/kernel/kernel
/var/crash/vmcore.1
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...

Unread portion of the kernel message buffer:
panic: ffs_clusteralloc: map mismatch
cpuid = 1
Uptime: 4d10h42m10s
Physical memory: 2546 MB
Dumping 249 MB: 234 218 202 186 170 154 138 122 106 90 74 58 42 26 10

Reading symbols from /boot/kernel/acpi.ko...Reading symbols from
/boot/kernel/acpi.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/acpi.ko
Reading symbols from /boot/kernel/pflog.ko...Reading symbols from
/boot/kernel/pflog.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/pflog.ko
Reading symbols from /boot/kernel/pf.ko...Reading symbols from
/boot/kernel/pf.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/pf.ko
Reading symbols from /boot/kernel/linux.ko...Reading symbols from
/boot/kernel/linux.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/linux.ko
#0  doadump () at pcpu.h:196
196     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) quit


my backup script:

#!/usr/local/bin/bash -x
#
# creates backups of essential files
#
DATA="/usr/home /root"
CONFIG="/etc /usr/local/etc /var/lib /etc/namedb"
LIST="/tmp/backlist_$$.txt"
#
mount /backup
set $(date)
#
if test "$1" = "Sun" ; then
        # weekly a full backup of all data and config. settings:
        #
        tar cfz "/backup/data/data_full_$6-$2-$3.tgz" $DATA
        rm -f /backup/data/data_diff*
        #
        tar cfz "/backup/config/config_full_$6-$2-$3.tgz" $CONFIG
        rm -f /backup/config/config_diff*
else
        # incremental backup:
        #
        find $DATA -depth -type f \( -ctime -1 -o -mtime -1 \) -print >
$LIST
        tar cfzT "/backup/data/data_diff_$6-$2-$3.tgz" "$LIST"
        rm -f "$LIST"
        #
        find $CONFIG -depth -type f  \( -ctime -1 -o -mtime -1 \) -print >
$LIST
        tar cfzT "/backup/config/config_diff_$6-$2-$3.tgz" "$LIST"
        rm -f "$LIST"
fi
#
# create sql dump of databases:
mysqldump -u root --password=XXXXXXXXX --opt information_schema >
"/backup/database/information_schema_$6-$2-$3.sql"
gzip "/backup/database/information_schema_$6-$2-$3.sql"
mysqldump -u root --password=XXXXXXXXX --opt denora >
"/backup/database/denora_$6-$2-$3.sql"
gzip "/backup/database/denora_$6-$2-$3.sql"
mysqldump -u root --password=XXXXXXXXX --opt evilnet >
"/backup/database/evilnet_$6-$2-$3.sql"
gzip "/backup/database/evilnet_$6-$2-$3.sql"
mysqldump -u root --password=XXXXXXXXX --opt mysql >
"/backup/database/mysql_$6-$2-$3.sql"
gzip "/backup/database/mysql_$6-$2-$3.sql"
mysqldump -u root --password=XXXXXXXXX --opt quotes_db  >
"/backup/database/quotes_db_$6-$2-$3.sql"
gzip "/backup/database/quotes_db_$6-$2-$3.sql"

#
umount /backup


fstab:

# Device                Mountpoint      FStype  Options         Dump
 Pass#
/dev/ad0s1b             none            swap    sw              0       0
/dev/ad0s1a             /               ufs     rw              1       1
/dev/ad1s1d             /usr/home       ufs     rw              1       1
/dev/acd0               /cdrom          cd9660  ro,noauto       0       0
/dev/da0s1d             /backup         ufs     rw,noauto       1       1

-- 
----------------
Island Information Services

Robert Jameson
Cell: (843) 298-6648
E-Mail: rj at dawnshosting.com