how to make repartition of disk Post: 302242100

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Operating Systems Solaris how to make repartition of disk Post 302242100 by admin@solaris on Wednesday 1st of October 2008 07:25:29 AM

10-01-2008

Registered User

Quote:

Originally Posted by smartgupta

hi I am working with sun solaris 9 and I have 40 GB hard disk and I want to recreate the partition.

1)how can I recreate the partition??
2) how can I take the back-up of my application so that I will not loose the data..

#sudo format

select your disk on which you have to make partition........

format> partition
print - check current status of your disk
modify - to create partition

Select partitioning base:
0. Current partition table (default)
1. All Free Hog
Choose base (enter number) [0]? 1

Part Tag Flag Cylinders Size Blocks
0 root wm 0 0 (0/0/0) 0
1 swap wu 0 0 (0/0/0) 0
2 backup wu 0 - 49149 60.00GB (49150/0/0) 125824000
3 unassigned wm 0 0 (0/0/0) 0
4 unassigned wm 0 0 (0/0/0) 0
5 unassigned wm 0 0 (0/0/0) 0
6 usr wm 0 0 (0/0/0) 0
7 unassigned wm 0 0 (0/0/0) 0

Do you wish to continue creating a new partition
table based on above table[yes]?
Free Hog partition[6]? 5
Enter size of partition '0' [0b, 0c, 0.00mb, 0.00gb]: 12gb
Enter size of partition '1' [0b, 0c, 0.00mb, 0.00gb]: 12gb
Enter size of partition '3' [0b, 0c, 0.00mb, 0.00gb]: 12gb
Enter size of partition '4' [0b, 0c, 0.00mb, 0.00gb]: 12gb
Enter size of partition '6' [0b, 0c, 0.00mb, 0.00gb]: 0gb
Enter size of partition '7' [0b, 0c, 0.00mb, 0.00gb]: 0gb

Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 9830 12.00GB (9831/0/0) 25167360
1 swap wu 9831 - 19661 12.00GB (9831/0/0) 25167360
2 backup wu 0 - 49149 60.00GB (49150/0/0) 125824000
3 unassigned wm 19662 - 29492 12.00GB (9831/0/0) 25167360
4 unassigned wm 29493 - 39323 12.00GB (9831/0/0) 25167360
5 unassigned wm 39324 - 49149 11.99GB (9826/0/0) 25154560
6 usr wm 0 0 (0/0/0) 0
7 unassigned wm 0 0 (0/0/0) 0

Okay to make this the current partition table[yes]? yes
Enter table name (remember quotes): new

Ready to label disk, continue? yes

After this we can create the file systems on each slice:

newfs /dev/rdsk/c0t0d0s and so on....

At this point we must create the mount points:

mkdir -p /mount/data (note -p makes the parent directories if they don't exist since

Now change ownership to oracle user for all file systems so oracle database can write to them:

sudo chown oracle:dba /mount/data

Finally, we're ready to edit the vfstab with the new entries:

/dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0 / ufs 2
no -

Now we can mount up the file systems:

sudo mount /mount/data

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LEARN ABOUT LINUX

kpartx

KPARTX(8)                                                  Linux Administrator's Manual                                                  KPARTX(8)

NAME

       kpartx - Create device maps from partition tables

SYNOPSIS

       kpartx [-a | -d | -l] [-v] wholedisk

DESCRIPTION

       This  tool,  derived  from  util-linux'  partx,  reads partition tables on specified device and create device maps over partitions segments
       detected. It is called from hotplug upon device maps creation and deletion.

OPTIONS

       -a     Add partition mappings

       -r     Readonly partition mappings

       -r     Read-only partition mappings

       -d     Delete partition mappings

       -u     Update partition mappings

       -l     List partition mappings that would be added -a

       -p     set device name-partition number delimiter

       -f     force creation of mappings; overrides 'no_partitions' feature

       -g     force GUID partition table (GPT)

       -v     Operate verbosely

       -s     Sync mode. Don't return until the partitions are created

EXAMPLE

       To mount all the partitions in a raw disk image:

              kpartx -av disk.img

       This will output lines such as:

              loop3p1 : 0 20964762 /dev/loop3 63

       The loop3p1 is the name of a device file under /dev/mapper which you can use to access the partition, for example to fsck it:

              fsck /dev/mapper/loop3p1

       When you're done, you need to remove the devices:

              kpartx -d disk.img

SEE ALSO

       multipath(8) multipathd(8) hotplug(8)

AUTHORS

       This man page was assembled By Patrick Caulfield for the Debian project. From documentation provided by  the  multipath  author  Christophe
       Varoqui, <christophe.varoqui@opensvc.com> and others.

                                                                     July 2006                                                           KPARTX(8)

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