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The backup and restore strategy has become a more flexible
one with the 4.1 product vs the 3.12 product. This backup strategy
allows you to use the standard HP-UX backup and restore tools for
this purpose. It allows selective file restore and also operates
when the NetWare server is up. As the NetWare file system contains attributes, such as DOS
attributes or NetWare trustee security information, which are not
visible to the normal HP-UX backup utilities, the NetWare backup
tools provided with the product extract a snapshot of this information
so that it can be backed up by standard HP-UX backup utilities. To do so, this information is put into a separate "shadow"
file. Doing so, guarantees that the information will stay in a valid
state during an HP-UX backup. The NetWare backup program, nwbackupsync,
which creates the "shadow" file, must be run before
you begin the normal HP-UX backup. When you run nwbackupsync, it creates
a "shadow" file, called backup_shadow,
in the control path directory for each NetWare volume being backed
up. By default, the control path for a volume is /var/opt/netware4/NWControl/<volume>.
The shadow file contains NetWare-specific attributes for all directories
and files in the volume. This information includes NetWare trustee
information, such as trustee assignments and inherited rights masks;
NetWare file information, such as attributes, object IDs, and create/modify
times; and name space information. Notes about NetWare Backup | |
NetWare 4.1/9000 server must be UP
when running nwbackupsync. nwbackupsync, even of the SYS
volume where some key NDS files reside, is not an NDS backup (see
next section). nwbackupsync does not backup
file contents, only NetWare attributes. You can backup all NetWare volumes or only volumes
specified in the command. See the command syntax below. The size of the backup_shadow file is approximately
the size of the trustee.sys and usinodes files combined together. One backup_shadow file is created for each volume,
which is found in the NetWare control path for that volume. NOTE: nwbackup and nwrestore are two utilities that
exist, but CANNOT be called directly from the command line. These
two utilities are to be used instead: nwbackupsync and
nwrestoresync.
nwbackupsync | |
This tool
extracts NetWare file system-specific data, which is not visible
to standard HP-UX backup tools, and places this data in a backup_shadow
file for each volume that you have backed up. You can then use your
usual HP-UX backup utilities to back up your volume(s), including
the backup_shadow file. | | | |  | NOTE: nwbackupsync must be run while
the NetWare file server is up | | | | |
Syntax: -a Used to backup all NetWare volumes. -v volume Used to backup a specific volume(s). This
option can be repeated which enables you to backup one or more specified
NetWare volumes. You cannot specify the -a option with the -v option. -p Prints list of all NetWare volumes. -l [0|1|2|3] Specifies
logging verbosity level: 0 - only criticial error messages displayed. 1 - displays
major information and warning messages 2 - displays directories
being backed up 3 - displays all files being backed up. -h Displays command help information.
Procedure to Backup All Volumes: Check that the NetWare file server is up using: nwserverstatus. Allow users to log off the server. Check the connection
status using the command: conndata. This step is recommended, not
required. Run the command: nwbackupsync -a After the command completes, run the normal HP-UX
backup utilities. Be sure to backup both the volume data and the
backup_shadow file.
Procedure to Backup a Single Volume: Check that the NetWare file server is up using: nwserverstatus. Allow users to log off the server. Check the connection
status using the command: conndata. This step is recommended, not
required. Run the command: nwbackupsync -v volume_name After the command completes, run the normal HP-UX
backup utilities. Be sure to backup both the volume data and the
backup_shadow file.
nwrestoresync | |
This tool recovers NetWare file system-specific data from
a previously created backup_shadow file. The shadow file may already
exist on your system in the NetWare control directory (/var/opt/netware4/NWControl/volume),
or may be restored to an alternate location from tape. When restoring
an entire volume, the backup_shadow file is restored to its proper
location (the control directory). When you restore individual files
or directories, the shadow file should be restored to an alternate
location to avoid overwriting the existing shadow file. Syntax: -a Used to resynchronize all NetWare
volumes. -v volume [file | directory]... Used to
resynchronize one or more files or directories from a specific NetWare
volume. This option can be repeated on the command line. This enables
you to restore one or more specified NetWare volumes. You cannot
specify the -a option with the -v option. You must qualify the files
and directories to be restored relative to the root of the NetWare
volume. For example, the NetWare file SYS:public\ndir is
specified as: -v SYS public/ndir. -f <temp_shadow_file> [file|directory]
Resynchronize one or more files or directories from a specific NetWare
volume, using an alternative temp_shadow_file file, instead of the
default file associated with the volume. The -v and -a options are
not used in conjunction with the command. Files and directories
to be restored are specified using the HP-UX path name instead of
a NetWare path name. -p Prints list of all NetWare volumes. -l [0|1|2|3] Specifies
logging verbosity level: 0 - only critical error messages displayed. 1 - displays major
information and warning messages 2 - displays directories being
backed up 3 - displays all files being backed up. -h Displays command help information.
Procedure to Restore All Volumes: | | | | | NOTE: If you are restoring all volumes on a NetWare server,
you probably lost the entire file server in a catastrophic event.
If so, you may have also lost your NDS information, including either
an NDS master or replica database that existed on the server. If
this is the case, you must review the next section, "Backup
and Restore NDS" before continuing with this procedure. | | | | |
Check that the disk space required for resoration of each
volume is available. If you don't know the HP-UX path names
of the volumes you have lost, you can determine the names with the
nwrestoresync -p command or in SAM. For additional information,
see the section, "Add NetWare Volume." If the NetWare server is up, shut it down using
the command: stopnw. Use your normal backup/restore utilities to restore
the lost volumes, giving HP-UX paths determined in step 2 above.
Also, be sure to restore the backup_shadow file for each volume
that was lost. The backup_shadow files are found in the control
directory for that volume: /var/opt/netware4/NWControl/volume_name Run SAM and check that each volume is still configured.
Refer to the section "Add NetWare Volume" in this
chapter for this procedure. If any volumes are missing, add them
in the SAM configuration tool. Start the NetWare file server using the command:
startnw Wait for the following message to appear on the
system console: NetWare server servername is up Run the command: nwrestoresync -a
Procedure to Restore a Single Volume: Check that the disk space required for resoration of the volume
is available. If you don't know the HP-UX path names
of the volume you have lost, you can determine the name with the
nwrestorsync -p command or in SAM. For additional information, see
the section, "Add NetWare Volume." If the NetWare server is up, shut it down using
the command: stopnw Use your normal backup/restore utilities to restore
the lost volume, giving HP-UX paths determined in step 2 above.
Also, be sure to restore the backup_shadow file for the volume that
was lost. The backup_shadow file is found in the control directory
for that volume: /var/opt/netware4/NWControl/volume_name Run SAM and check that the volume is still configured.
Refer to the section "Add NetWare Volume" in this
chapter for this procedure. If volume is missing, add it in the
SAM configuration tool. Start the NetWare file server using the command:
startnw Wait for the following message to appear on the
system console: NetWare server servername is up Run the command: nwrestoresync -v volume_name
Procedure to Restore Selected Directories or Files: Check that the NetWare file server is up. To do so, run the
command: nwserverstatus Restore all lost files from tape to their original
locations in the NetWare volume using your preferred HP-UX restore
tool. If you don't know the HP-UX path name of the volume
for the file(s) you have lost, you can determine this with the nwrestorsync
-p command or in SAM. For additional information, refer to the section,
"Adding a NetWare Volume." Determine the location of the backup_shadow file
on the tape, which will be in the control path for the volume: /var/opt/netware4/NWControl/volume_name. Restore the backup_shadow file to a temporary location
such as /tmp/backup_shadow.volume_name. Change the HP-UX current working directory to the
parent of the lost file(s). Run the command: nwrestoresync -f /tmp/backup_shadow.volume file|dirname
| | | | | NOTE: The file or directory names specified when you restore
using the -f option must be in the form of an HP-UX path name, not
VOL:dir\file. | | | | |
Example: For the NetWare file name, VOL:DIR1\FILE1, the HP-UX
file name is: /var/opt/ netware4/vol/dir1/file1. The restore commands example for this file would be: cd /var/opt/netware4/vol/dir1 nwrestoresync -f /tmp/backup_shadow.vol file1 Troubleshooting a restoreIf you encounter errors when restoring entire volumes, such
as:
nwrestore:
Unable to open file
Error: 0x50-/var/opt/netware4/volume/dir1/file nwrestore: Unable to open file
Error:
0x40 - /var/opt/netware4/volume/dir1/file2 stat
of file failed with errno 2 complete the steps below: Stop the NetWare server with the stopnw command. Change the HP-UX working directory to the control
path of the troubled volume: /var/opt/netware4/NWControl/volume_name Verify the backup_shadow file exists in this directory. Remove the usinodes, trustee.sys and extendedNames
files. Restart the NetWare server with the startnw command. Wait for the message: NetWare
server servername is up. Attempt nwrestoresync again on the problem volume
with the command: nwrestoresync
-v volume_name.
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