02-28-2017
The boot file system is EAFS, the root and any other (/u) file systems default to HTFS.
You cannot re-size an HTFS partition without losing the data that is on it. So you will not be able to add the /u file system without doing a full backup and standalone restore.
From an operational point of view, it will make no difference if /u is a file system, or simply another directory in the root file system.
If you must, do a full backup, boot from the Edge recovery media, re-size the partitions, and do full restore.
---------- Post updated at 08:02 PM ---------- Previous update was at 07:20 PM ----------
I now what happened. When you restored the old data, you restored /etc/default/filesys, which has the file system configuration. Unfortunately the one that has been restored contains info on /u but that file system no longer exists.
Just use a text editor and remove the references to /u.
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LEARN ABOUT OSF1
btextract
btextract(8) System Manager's Manual btextract(8)
NAME
btextract - Extracts the file systems from tape in single-user mode in memory
SYNOPSIS
/usr/sys/bin/btextract
DESCRIPTION
The btextract utility is a shell script that restores file systems from tapes that contain the bootable Standalone System (SAS) kernel.
The SAS kernel is created using the btcreate utility. You can perform a DEFAULT restore or an ADVANCED restore operation.
A DEFAULT restore is used by system administrators who want to duplicate the customized system on more than one machine of the same hard-
ware platform type. When you perform a DEFAULT restore, you cannot specify which disk partitions to use for the restore operation.
Instead, the btextract utility restores file systems using the disk partition information gathered during the btcreate session; all exist-
ing information is overwritten.
Note
To perform a DEFAULT restore, the disk configuration of the system you backed up must be the same as the system you are restoring.
During an ADVANCED restore, you are prompted to enter the name of the disk partition where the file systems are to be restored.
Note
During an ADVANCED restore, the btextract utility assigns the b partition of the root disk as the swap partition.
A file system which is more than 100% full cannot be restored in a partition of the same size as the original partition. During the restore
of the UFS file system, the /sbin/restore command adds a new file named restoresymtable. The presence of this restoresymtable file can make
the restored file system larger than the source partition size listed in the /sbin/disklabel output.
For example, on the source system, the disklabel shows the target h partition to be:
h: 86758 1212416 4.2BSD
And the ufs file system is as follows:
Filesystem 512-blocks Used Available Capacity Mounted on /dev/dsk8h 83812 83786 0 112% /bootable
The file system is 112% full. This file system cannot be restored on the target file system of 86758 (512-blocks), as the following file is
created by the /sbin/restore command.
-rw-r--r-- 1 root system 27368 Jul 2 09:33 restoresymtable
The command /sbin/restore creates a restoresymtable file that exceeds the 112% range. The solution is to use a partition of about 86996
(512-blocks), about 3.8% larger than the actual file size.
USING btextract
To use the btextract utility, place the system in a halt state, initialize the system, then boot from the tape as follows: >>> init >>>
show dev >>> boot -fl "nc" MKA500
In the previous example, the show dev command provides the device name under BOOTDEV and MKA500 is the BOOTDEV.
Once the initial boot is complete, the shell invokes the btextract utility. If you created a /usr/lib/sabt/sbin/custom_install.sh script
during the btcreate session, the btextract utility invokes the custom_install.sh script before exiting. See the btcreate reference page for
more information.
You also have the option to label disks using your own disklabel script. If a customized disklabel script is not present, the btextract
command will label the disks in the usual manner. A customized disklabel script has the following restrictions: It must be located in the
/usr/lib/sabt/etc directory. It must be named custom_disklabel_file.
After the btextract utility completes, you must shut down the system, then reboot the system from the restored disk as follows: # shutdown
-h now >>> boot DKA100
In the previous example, DKA100 is the BOOTDEV.
RETURN VALUES
Success. An error occurred.
FILES
Log of the btextract process in memory Copy of the btextract process on the restored root file system Script used to customize the restored
image A custom disklabel file read by btextract
SEE ALSO
Commands: addvol(8), btcreate(8), df(1), disklabel(8), lmf(8), mkfdmn(8), mkfset(8), newfs(8), restore(8), sh(1), vrestore(8)
btextract(8)