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fbackup(1M)
If sparse files are backed up without using data compression, a very large amount of media can be con-
sumed.
fbackup
creates volumes with a format that makes duplication of volumes by
Copying an
fbackup
fbackup
volume on the new media because the formats of volumes on raw magnetic tape, on a regular
file, and on rewritable optical disks are not identical.
When configuring the parameter
maximum allowed for the tape drive. Common record sizes include 128 blocks for DLT and DDS tape
drives, and 60 blocks for the HP 7980. Note also that the blocksize used in earlier releases (7.0 and before)
was 512 bytes, whereas it is now 1024 bytes. This means that the same value specified in blocksperrecord
in an earlier release creates blocks twice their earlier size in the current release; for example, a blocksper-
record parameter of 32 would create 16-Kbyte blocks at Release 7.0, but now creates 32-Kbyte blocks. If
blocksperrecord exceeds the byte count allowed by the tape drive, the tape drive rejects the write, causing
an error to be communicated to
error message resembles the following:
fbackup (3013): Write error while writing backup at tape block 0.
Diagnostic error from tape 11...... SW_PROBLEM
fbackup (3102): Attempting to make this volume salvageable.
etc.
DEPENDENCIES
NFS
Access control lists of networked files are summarized (as returned in
copied to the new file (see stat(2)).
fbackup
does not support QIC-120 and QIC-150 formats on QIC devices. If
these formats,
fbackup
mt lu X: Write must be a multiple of 512 bytes in QIC 120 or QIC 150
AUTHOR
was developed by HP.
fbackup
FILES
/var/adm/fbackupfiles/dates
SEE ALSO
cpio(1), ftio(1), dump(1M), frecover(1M), restore(1M), rmt(1M), stat(2), acl(5), mt(7).
HP-UX 11i Version 2: December 2007 Update
volume created on one media type to another media type does not produce a valid
blocksperrecord
which
fbackup
fbackup
fails and the following message is displayed :
database of past backups
− 7 −
dd
(see
-c
option), the record size is limited by the
interprets as a bad tape. The resulting write
(printed by driver on console)
st_mode
fbackup
Hewlett-Packard Company
fbackup(1M)
impossible (see dd(1)).
by
stat()
), but not
is attempted for
247
f
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