documop.blogg.se - Fbackup keep previous backups

#Fbackup keep previous backups update
#Fbackup keep previous backups full

Vivek Gite is the founder of nixCraft, the oldest running blog about Linux and open source. man pages – rmt, frecover, tar, fbackup, mt, tar.# frecover -f /dev/rmt/0m -N Further readings: Note that the listing of files produced with the -N and -v options requires the reading of the entire backup, but is therefore a more accurate reflection of the backup’s contents than the index stored at the beginning of the backup (which was created at the start of the backup session, and is not changed during the course of the backup). This option is useful for verifying backup media contents in terms of validity (block checksum errors are reported), and contents (a listing of files can be produced by using the -N and -v options together). The -N option (no recovery) prevent frecover from actually recovering any files onto disk, but read the backup as if it was, in fact, recovering the data from the backup, producing the same output that it would on a normal recovery. -i /path/to/file : Recover only this file or directory.-x : Extracted / recover selected files / dires only specified by -i option.# frecover -f /dev/rmt/0m -x -v -i /home/vivek For example, just restore /home/vivek directory, enter: To restore selected files or directories use -i /path option. To restore all files and directories from tape, enter: # frecover -f /dev/rmt/0m -x -N -v How do I backup data with frecover command? # fbackup -f /dev/rmt/0m -u -1 -g /var/adm/fbackupfiles/ -v How do I view contents of an fbackup tape? # fbackup -f /dev/rmt/0m -u -0 -g /var/adm/fbackupfiles/ -v All files in the graph that have been modified since this date are backed. If no such entry is found, the beginning of time is assumed.

When doing an incremental backup of a particular graph at a particular level, the database of past backups is searched to find the date of the most recent backup of the same graph that was done at a lower level. Higher levels are generally used to perform incremental backups. This single-digit number is the backup level. The -0-9 option used to specify backup level.

#Fbackup keep previous backups full

# fbackup -f /dev/rmt/0m -g /var/adm/fbackupfiles/ -v How do I perform full and incremental backups? For example, backup full file system but exclude /tmp, /cdrom and /nfs, enet: You can also create a text file that contains a list of all files and directories to be included or excluded from the backup. # fbackup -f /dev/rmt/0m -i / -e /tmp -e /cdrom -e /nfs -v Using the normal tape location to do a full backup but exclude /tmp and /cdrom /nfs directories, insert a new tape and enter: Using the normal tape location to do a full backup, insert a new tape and enter: Only use this if you are using -g /path/to/file option.

#Fbackup keep previous backups update

-u : Update the database of past backups so that it contains the backup level, the time of the beginning and end of the session, and the graph file used for this fbackup session.

-g /var/adm/fbackupfiles/ : File that contains a list of files / dirs to be included / excluded from the tape backup.

-f /dev/rmt/0m : Specify tape device name.

If the -I option is omitted, no index file is generated. Each line contains the file size, the volume number on which that file resides, and the file name. It consists of one line for each file backed up during the session.

-I index.data : index.data specifies the name of the on-line index file to be generated.

There is no limit on how many times the -i option can be specified i.e. # fbackup -i /data -I index.data -f /dev/rmt/0m # mt -f /dev/rmt/0mnb rew How do I backup data with fbackup command?īackup /data directory to /dev/rmt/0m, enter: For example, Rewind the tape associated with the device file /dev/rmt/0mnb: When winding backwards, the tape always stops at the BOT marker, regardless of the number remaining in count.See mt command man page for more information. If count is not specified, one is assumed. Mt command winds the tape in the requested direction (forward or backward), stopping after the specified count EOF marks or records are passed.

Raw magnetic tape interface – /dev/rmt/*.

G] make_net_recovery or make_tape_recovery commands HP-UX Tape device namesįirst device will have name such as /dev/rmt/0m, /dev/rmt/1m and so on. B] vxdump / vxrestore (vxfs filesystem only)