Sharing and Migrating File Systems Exercise
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Host A (Tape Drive)						                     |
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Migrating a file system
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1) # umount /export/home
2) # fsck /export/home

#! These steps ensure the existing /export/home FS is clean.

3) # mount /export/home
4) # ufsdump 0uvf /dev/rmt/0 /export/home
5) # ufsrestore t

#! Step 5 checks the integrity of the tape.

6) # newfs /dev/rdsk/c0t1d0s1
7) # fsck /dev/rdsk/c0t1d0s1
8) # umount /export/home
8) # mount /dev/dsk/c0t1d0s1 /export/home
9) # cd /export/home
10) # ufsrestore rvf /dev/rmt/0
11) # ls -l

#! The FS should be restored

12) # umount /export/home
13) # fsck /dev/rdsk/c0t1d0s1
14) # vi /etc/vfstab

~
/dev/dsk/c0t1d0s1	/dev/rdsk/c0t1d0s1	/export/home	ufs	2	yes	-
~

#! This entry should replace the old /export/home entry. Remember that all files are tab delimited.
#! DO NOTinclude extra tabs in the file. They will cause fsck errors at mount.

15) # mountall -l
16) # df -k

#! Be sure that /export/home is mounted on c0t1d0s1

Sharing a file system
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#! From / directory.

1) # mkdir /export/home/backup
2) # tar cvf /export/home/backup/expt.tar ./export/home
3) # vi /etc/dfs/dfstab

share -F nfs -o ro /export/home/backup

4) # cd /etc/init.d
5) # ./rpc stop
6) # ./rpc start
7) # ./nfs.server start

#! Steps 4-7 are only nessecary if this is the first time Host A will be an NFS server. 

8) # dfshares hosta

#! Host A should be sharing out the directory /export/home/backup.

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Host B										    |
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Migrating a File System
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1) # newfs /dev/rdsk/c0t1d0s1
2) # fsck /dev/rdsk/c0t1d0s1

#! Prepare the new partition

3) # umount /export/home
4) # fsck /export/home

#! These steps ensure the existing /export/home FS is clean.

5) # mount /export/home
6) # ufsdump 0uvf /dev/rmt/0  /export/home
7) # ufsrestore tf /dev/rmt/0
8) # mount /dev/dsk/c0t1d0s1 /export/home
8) # cd /export/home
9) # ufsrestore rvf /dev/rmt/0
10) # ls -l

#! The FS should be restored

11) # umount /export/home
12) # fsck /dev/rdsk/c0t1d0s1
13) # vi /etc/vfstab

~
/dev/dsk/c0t1d0s1	/dev/rdsk/c0t1d0s1	/export/home	ufs	2	yes	-
~

#! This entry should replace the old /export/home entry. Remember that all files are tab delimited.  
#! DO NOT include extra tabs in the file. They will cause fsck errors at mount.

14) # mountall -l
15) # df -k

#! Be sure that /export/home is mounted on c0t1d0s1

Mounting a remote file system
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1) # dfshares hosta

#! If you receive an rpc error, have Host A stop and start the rpc and nfs.server processes in the  
#! /etc/init.d directory

2) # mkdir -p /backups/filesys
3) # vi /etc/vfstab

hosta:/export/home/backup	-	/backups/filesys	nfs	-	yes	soft,bg

#! Host B does not need to specify a device to fsck or fsck pass. This should all be  
#! handled on the server. Host B has to put  a "-" to denote skipped fields. Be sure 
#! not to include any extra tabs. This will causefsck errors at mount. The "soft,bg"
#! for options allow Host B to retry the remote mount in the background and continue
#! with the process. The default will cause Host B to wait 12,000 seconds for
#! the resource to become available.

4) # umountall
5) # mountall
6) # mount -v

#! Host B should now report Host A's file system being mounted locally on /backups/filesys.

7) # cd /backups/filesys
8) # ls -l

#! Host B should now see the contents of Host A's /export/home/backup.