I reformatted the backup drive with ext2 to see if that made any
difference. Fedora still wedged during the backup, twice.
The first time it wedged when I was switching screens and
the keyboard went completely dead. No response to anything,
not even a blink for Caps Lock. No response to Power button
either.
The second time Fedora wedged I was able to execute some
commands as long as I didn't reference the /u file system
in any way. An ll /tmp command given with the shell in
/u printed the total and then wedged. The identical command
given from /tmp worked normally. The only command that
referenced the /u file system in any way that worked was df.
During this time the backup from /y to /b was proceeding
normally. I was able to suspend the backup with Ctrl-Z.
I waited for disk activity to die down. I gave a sync command
detached; it did not complete. The backup responded to a
"fg" command to restart.
Note that /y and root were still working normally despite
being on the same hard drive as the wedged /u file system.
I then issued a reboot command. It stalled after printing
the first line of its usual sequence.
[caf@omen ~]$ uname -a
Linux omen.com 2.6.27.19-170.2.35.fc10.x86_64 #1 SMP Mon Feb 23 13:00:23
EST 2009 x86_64 x86_64 x86_64 GNU/Linux
After a hardware reset I mounted the backup drive -o sync.
The backup has been proceeding for the last six or so hours
at a snail's pace, but it has not wedged the system. The
backup drive is seeking its heart out! A full backup of
/u /y and /var normally completes in a few hours but
this will take at least an order of magnitude longer, with
much more strain on the physical drive. This is not
a useful solution.
/dev/sdb3 on / type ext4 (rw)
/proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda1 on /oldroot type ext4 (rw)
/dev/sdb7 on /x type ext4 (rw)
/dev/sdb2 on /y type ext4 (rw)
/dev/sda3 on /v type ext4 (rw)
/dev/sdb5 on /u type ext4 (rw)
/dev/sdb1 on /boot type ext2 (rw)
tmpfs on /dev/shm type tmpfs (rw)
/dev/sdc3 on /w type ext4 (rw)
/dev/sdd2 on /z type ext4 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
nfsd on /proc/fs/nfsd type nfsd (rw)
gvfs-fuse-daemon on /u/caf/.gvfs type fuse.gvfs-fuse-daemon
(rw,nosuid,nodev,user=caf)
/dev/sde1 on /b type ext2 (rw,sync)
--
Chuck Forsberg caf@xxxxxxxx www.omen.com 503-614-0430
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231 FAX 629-0665
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