I'm using a cygwin script as a wrapper around ntbackup on a number of servers, running windows 2000 and 2003 server.
Basically, the script does
mt -f /dev/st0 status dd if=labelfile of=/dev/st0 ntbackup [ lots of options ] mt -f /dev/st0 offline
After doing cygwin updates, backups started failing. mt and/or dd would hang, ntbackup wouldn't detect the tape drive
This usually happened the second day. One day everything would work, the next day, the backup would hang. Rebooting would be the only way to get a good backup the next day. On one server, a cold reboot was always necessary to release the tape.
Reverting back to cygwin 1.5.9 and mt 2.1 resolved my problems.
Pim
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