HP-UX Reference (11i v1 00/12) - 1M System Administration Commands N-Z (vol 4)
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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man1m/naaagt.1m
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vxdump(1M) vxdump(1M)
• Files with VxFS extent attributes (see setext(1M)) cannot be restored on a file system of a type that does
not support extent attributes.
If you use vxdump to produce a dump intended for an earlier version of vxrestore, and if the dump
requires multiple tapes, you should use the -s, -d,or-B option.
Dumps produced by older versions of vxdump can be read by the current version of vxrestore.
NOTES
Perform dumps with the file system unmounted or the system in single-user environment (see init(1M)) to
ensure a consistent dump. If you have the HP OnLineJFS product installed, the dump can be performed in
the multi-user environment using a snapshot file system with the online backup facility (see the
snapof=file option of mount_vxfs(1M)).
Up to 32 read errors on the file system are ignored.
Each reel requires a new process; parent processes for reels already written remain until the entire tape is
written.
vxdump does not dump information about ACLs, therefore vxrestore does not restore information
about ACLs.
A version of vxdump resides in /sbin for use when the system is in single user state.
EXAMPLES
In the following example, assume that the file system
/mnt is normally attached to the file tree at the root
directory, (/).
In this example, the entire file system (/mnt) is dumped on /dev/rmt/0m and the size of the tape is 2
gigabytes.
vxdump -0 -B 2g -f /dev/rmt/0m /mnt
Using the traditional command line syntax and specifying the tape size in logical records:
vxdump 0Bf 2097152 /dev/rmt/0m /mnt
The option argument 2097152 goes with the option letter B as it is the first option letter that requires
an option argument. The option argument /dev/rmt/0m goes with the option letter f as it is the
second option letter that requires an option argument.
AUTHOR
vxdump and rvxdump are based on the dump and rdump programs from the 4.4 Berkeley Software
Distribution, developed by the the University of California, Berkeley, and its contributors.
FILES
/dev/rmt/0m Default tape unit to dump to.
/var/adm/dumpdates New format-dump-date record.
/etc/fstab Dump table: file systems and frequency.
/etc/mnttab Mounted file system table.
/etc/group Used to find group operator.
SEE ALSO
close(2), ctime(3C), dump(1M), fstab(4), getopt(3C), init(1M), mount_vxfs(1M), open(2), rmt(1M),
setext(1M), vxrestore(1M), wall(1M).
Section 1M−−1046 − 3 − HP-UX Release 11i: December 2000
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