lssavevg Command

Purpose

Lists or restores the contents of a volume group backup on a specified media.

Syntax

lssavevg [ -b blocks ] [ -f device ] [ -a ] [ -c ] [ -l ] [ -n ] [ -r ] [ -s ] [ -d path ] [ -B ] [ -D ] [ -L ] [ -V ] [ file_list ]

Description

The lssavevg command lists the contents of a volume group backup from tape, file, CD-ROM, or other source and can be used to restore files from a valid backup source. The lssavevg command also works for multi-volume backups such as multiple CDs, DVDs, USB disks, or tapes.

The lssavevg -r and restorevgfiles commands perform identical operations and must be considered interchangeable.

Flags

Item	Description
-a	Verifies the physical block size of the tape backup, as specified by the -b block flag. You might need to alter the block size if necessary to read the backup. The -a flag is valid only when a tape backup is used.
-b blocks	Specifies the number of 512-byte blocks to read in a single input operation, as defined by the blocks parameter. If the blocks parameter is not specified, the number of blocks read defaults to 100.
-B	Prints the volume group backup log to stdout. This flag displays the past 256 backups (roughly). The log is in alog format and is kept in /var/adm/ras/vgbackuplog. Each line of the log is a semicolon-separated list of the file or device name, the command that is used to make backup, date, shrink size, full size of the backup, and recommended maintenance or technology level (if any). Note: The shrink size is the size of the data on all file systems. The full size is total size of each file system (unused + data).
-c	Produces colon-separated output. This flag works only with the -l and -L flags.
-d path	Specifies the directory path to which the files are restored, as defined by the path parameter. If the -d parameter is not used, the current working directory is used. This can be a problem if the current working directory is root. We recommend writing to a temporary folder instead of to root.
-D	Produces debug output.
-f device	Specifies the type of device containing the backup (file, tape, CD-ROM, or other source) as defined by the device parameter. When -f is not specified, device will default to /dev/rmt0.
-l	Displays useful information about a volume group backup. This flag requires the -f device flag. This flag causes lssavevg to display information such as volume group, date and time backup was made, uname output from backed up system, oslevel, recommended maintenance or technology level, backup size in megabytes, and backup shrink size in megabytes. The shrink size is the size of the data on all file systems. The full size is the total size of each file system (unused + data). The -l flag also displays the logical volume and file system information of the backed up volume group, equivalent to running "lsvg -l vgname".
-L	Displays lpp fileset information about a mksysb backup only. This flag requires the -f device flag and displays the equivalent information to that produced by invoking "lslpp -l" on the running backed up system. This flag does not produce output about any volume group backup other than that produced by mksysb.
-n	Does not restore ACLs, PCLs, or extended attributes
-r	Specifies to restore the backup files, as defined by the file-list parameter. If the file-list parameter is not specified, then all files in the backup are restored. If the -r flag is not used, then executing the lssavevg command lists only the files in the specified backup.
-s	Specifies that the backup source is a user volume group and not rootvg.
-V	Verifies a tape backup. This flag requires the -f device flag and works for tape devices only. The -V flag causes lssavevg to verify the readability of the header of each file on the volume group backup and print any errors that occur to stderr.

Parameters

Item	Description
file_list	Identifies the list of files to be restored. This parameter is used only when the -r flag is specified. The full path of the files relative to the current directory must be specified in the space-separated list. All files in the specified directory are restored unless otherwise directed. If you are restoring all files in a directory, we recommend writing to a temporary folder instead of to root.

Examples

To list the contents of the system backup that is on the default device /dev/rmt0, enter the following command:
```
lssavevg
```
To list the contents of the system backup that is on device /dev/cd1, enter the following command:
```
lssavevg -f /dev/cd1
```
To list the contents of the system backup that is on device /dev/cd1, which is a user volume group that is not rootvg, enter the following command:
```
lssavevg -f /dev/cd1 -s
```
To restore /etc/filesystems from the system backup that is on device /dev/cd1, enter the following command:
```
lssavevg -f /dev/cd1 -r ./etc/filesystems
```
To restore all files in the /myfs/test directory of the non-rootvg backup, which is on device /dev/cd1, and write the restored files to /data/myfiles, enter the following command:
```
lssavevg -f /dev/cd1 -r -s -d /data/myfiles ./myfs/test
```
To display colon-separated lpp information about a mksysb backup tape that is on device /dev/rmt0, enter the following command:
```
lssavevg -Lc -f /dev/rmt0
```
To display the volume group backup log to stdout, enter the following command:
```
lssavevg -B
```
To list volume group and general backup data about a backup that is on /tmp/mybackup, enter the following command:
```
lssavevg -l -f /tmp/mybackup
```
To verify the readability of each header on a volume group backup tape in /dev/rmt0, enter the following command:
```
lssavevg -V -f /dev/rmt0
```
To list the contents of the system backup that is on device /dev/usbms0, enter the following command:
```
lssavevg –f /dev/usbms0
```

Files

Item	Description
/usr/bin/lssavevg	Contains the lssavevg command