First step is to prepare hard drives for raid 0. So we will create one big partition that will span across whole drive. Run format and select first drive:
At this point we have disk 1 partitioned with slice 0 spanning from cyl 1 to the end of drive $. Instead of repeating same steps for disk 2 and disk 3, we will use Solaris prtvtoc to print disk's 1 partition table and fmthard to apply that table to disk 2 and 3 (all disks are identical).
Next step is to create replicas of metadevice state database. Metadevice database contains configuration and state of all metadevices and hot spare pools on the system. Since this information is important, we will be creating 3 replicas of this database, one per each drive. Metadevice state database can be created on any slice on hard drive, including slice that will later became part of metadevice. Also it's possible to create more than 1 replica of database per one slice. If one or more metadevice state databases fails, volume management compare other databases and based on majority consensus algorithm decides which replicas are valid. Command to create metadevice replicas is metadb.
-a is to add database replicas, and -f is to force adding (we have to force adding since there no metadevice state replicas exists). Use metadb -i to check state of metadevice replicas. In our case we can see that replicas are active a flag, and that they are up to date u flag
metadb's -c switch determines how many replicas per slice we want. If we have had issued -c 3 on three slices we would end up with 9 metadevice state database replicas:
Once we have metadevice state databases we will proceede with creating of metadevice. Command is metainit metadevice ame number of stripes width logical name for slice1 slice2 .... Number of stripes parameter determines how many stripes we want in metadevice. For example if number of stripes equals to 1, we are creating simple stripe, if it's equal to number of slices than we have concatenation. width specifies number of slices that make up a stripe. In our case number of stripes will be 1, and width 3
To verify stripe and get some info we use metastat command
And now final steps is to create 4 soft partitons within metadevice d0. For creating soft partitions we are using metainit with -p switch and specifying size of soft partition as last parameter (in our example it's 204gb/4 = 51gb)
you can verify this with metastat
after this you can use soft partitions as you would be using any other partition, format them, mount, udsdump, ufsrestore etc ... for example:
repeat this step for /dev/md/rdsk/d2 /dev/md/rdsk/d3 and /dev/md/rdsk/d4. when you'r finished you can happily mount soft partitions into locations where zones will be installed.
if you want to remove your metadevice/metadb use reversed steps:
first remove soft partitions from meta device
then remove metadevice
and finaly metadb
root@jsc-x4100-17:~# format
Searching for disks...done
AVAILABLE DISK SELECTIONS:
0. c2t0d0
/pci@7b,0/pci1022,7458@11/pci1000,3060@2/sd@0,0
1. c2t1d0
/pci@7b,0/pci1022,7458@11/pci1000,3060@2/sd@1,0
2. c2t2d0
/pci@7b,0/pci1022,7458@11/pci1000,3060@2/sd@2,0
3. c2t3d0
/pci@7b,0/pci1022,7458@11/pci1000,3060@2/sd@3,0
Specify disk (enter its number): 1
selecting c2t1d0
[disk formatted]
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
fdisk - run the fdisk program
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
save - save new disk/partition definitions
inquiry - show vendor, product and revision
volname - set 8-character volume name
! - execute , then return
quit
format>p
PARTITION MENU:
0 - change `0' partition
1 - change `1' partition
2 - change `2' partition
3 - change `3' partition
4 - change `4' partition
5 - change `5' partition
6 - change `6' partition
7 - change `7' partition
select - select a predefined table
modify - modify a predefined partition table
name - name the current table
print - display the current table
label - write partition map and label to the disk
! - execute , then return
quit
partition> 0
Part Tag Flag Cylinders Size Blocks
0 home wm 1 - 8920 68.33GB (8920/0/0) 143299800
Enter partition id tag[home]:home
Enter partition permission flags[wm]:wm
Enter new starting cyl[1]: 1
Enter partition size[143299800b, 8920c, 8920e, 69970.61mb, 68.33gb]: $
partition> label
Ready to label disk, continue? y
partition> q
FORMAT MENU:
disk - select a disk
type - select (define) a disk type
partition - select (define) a partition table
current - describe the current disk
format - format and analyze the disk
fdisk - run the fdisk program
repair - repair a defective sector
label - write label to the disk
analyze - surface analysis
defect - defect list management
backup - search for backup labels
verify - read and display labels
save - save new disk/partition definitions
inquiry - show vendor, product and revision
volname - set 8-character volume name
! - execute , then return
quit
format> q
At this point we have disk 1 partitioned with slice 0 spanning from cyl 1 to the end of drive $. Instead of repeating same steps for disk 2 and disk 3, we will use Solaris prtvtoc to print disk's 1 partition table and fmthard to apply that table to disk 2 and 3 (all disks are identical).
root@jsc-x4100-17:~# prtvtoc /dev/rdsk/c2t1d0s2 > /var/tmp/prtvtoc.c2t1d0s2 root@jsc-x4100-17:~# fmthard -s /var/tmp/prtvtoc.c2t1d0s2 /dev/rdsk/c2t2d0s2 fmthard: New volume table of contents now in place. root@jsc-x4100-17:~# fmthard -s /var/tmp/prtvtoc.c2t1d0s2 /dev/rdsk/c2t3d0s2 fmthard: New volume table of contents now in place.
Next step is to create replicas of metadevice state database. Metadevice database contains configuration and state of all metadevices and hot spare pools on the system. Since this information is important, we will be creating 3 replicas of this database, one per each drive. Metadevice state database can be created on any slice on hard drive, including slice that will later became part of metadevice. Also it's possible to create more than 1 replica of database per one slice. If one or more metadevice state databases fails, volume management compare other databases and based on majority consensus algorithm decides which replicas are valid. Command to create metadevice replicas is metadb.
root@jsc-x4100-17:~# metadb -a -f c2t1d0s0 c2t2d0s0 c2t3d0s0
-a is to add database replicas, and -f is to force adding (we have to force adding since there no metadevice state replicas exists). Use metadb -i to check state of metadevice replicas. In our case we can see that replicas are active a flag, and that they are up to date u flag
root@jsc-x4100-17:~# metadb -i
flags first blk block count
a u 16 8192 /dev/dsk/c2t1d0s0
a u 16 8192 /dev/dsk/c2t2d0s0
a u 16 8192 /dev/dsk/c2t3d0s0
r - replica does not have device relocation information
o - replica active prior to last mddb configuration change
u - replica is up to date
l - locator for this replica was read successfully
c - replica's location was in /etc/lvm/mddb.cf
p - replica's location was patched in kernel
m - replica is master, this is replica selected as input
W - replica has device write errors
a - replica is active, commits are occurring to this replica
M - replica had problem with master blocks
D - replica had problem with data blocks
F - replica had format problems
S - replica is too small to hold current data base
R - replica had device read errors
metadb's -c switch determines how many replicas per slice we want. If we have had issued -c 3 on three slices we would end up with 9 metadevice state database replicas:
root@jsc-x4100-17:~# metadb -a -f -c 3 c2t1d0s0 c2t2d0s0 c2t3d0s0
root@jsc-x4100-17:~# metadb -i
flags first blk block count
a u 16 8192 /dev/dsk/c2t1d0s0
a u 8208 8192 /dev/dsk/c2t1d0s0
a u 16400 8192 /dev/dsk/c2t1d0s0
a u 16 8192 /dev/dsk/c2t2d0s0
a u 8208 8192 /dev/dsk/c2t2d0s0
a u 16400 8192 /dev/dsk/c2t2d0s0
a u 16 8192 /dev/dsk/c2t3d0s0
a u 8208 8192 /dev/dsk/c2t3d0s0
a u 16400 8192 /dev/dsk/c2t3d0s0
r - replica does not have device relocation information
o - replica active prior to last mddb configuration change
u - replica is up to date
l - locator for this replica was read successfully
c - replica's location was in /etc/lvm/mddb.cf
p - replica's location was patched in kernel
m - replica is master, this is replica selected as input
W - replica has device write errors
a - replica is active, commits are occurring to this replica
M - replica had problem with master blocks
D - replica had problem with data blocks
F - replica had format problems
S - replica is too small to hold current data base
R - replica had device read errors
Once we have metadevice state databases we will proceede with creating of metadevice. Command is metainit metadevice ame number of stripes width logical name for slice1 slice2 .... Number of stripes parameter determines how many stripes we want in metadevice. For example if number of stripes equals to 1, we are creating simple stripe, if it's equal to number of slices than we have concatenation. width specifies number of slices that make up a stripe. In our case number of stripes will be 1, and width 3
root@jsc-x4100-17:~# metainit d0 1 3 c2t1d0s0 c2t2d0s0 c2t3d0s0 d0: Concat/Stripe is setup
To verify stripe and get some info we use metastat command
root@jsc-x4100-17:~# metastat
d0: Concat/Stripe
Size: 429835140 blocks (204 GB)
Stripe 0: (interlace: 32 blocks)
Device Start Block Dbase Reloc
c2t1d0s0 16065 Yes Yes
c2t2d0s0 16065 Yes Yes
c2t3d0s0 16065 Yes Yes
Device Relocation Information:
Device Reloc Device ID
c2t1d0 Yes id1,sd@SSEAGATE_ST973401LSUN72G_3710ZJ07____________3LB0ZJ07
c2t2d0 Yes id1,sd@SSEAGATE_ST973401LSUN72G_3710ZGLR____________3LB0ZGLR
c2t3d0 Yes id1,sd@SSEAGATE_ST973401LSUN72G_3710Z1DG____________3LB0Z1DG
And now final steps is to create 4 soft partitons within metadevice d0. For creating soft partitions we are using metainit with -p switch and specifying size of soft partition as last parameter (in our example it's 204gb/4 = 51gb)
root@jsc-x4100-17:~# metainit d1 -p d0 51g d1: Soft Partition is setup root@jsc-x4100-17:~# metainit d2 -p d0 51g d2: Soft Partition is setup root@jsc-x4100-17:~# metainit d3 -p d0 51g d3: Soft Partition is setup root@jsc-x4100-17:~# metainit d4 -p d0 51g d4: Soft Partition is setup
you can verify this with metastat
root@jsc-x4100-17:home# metastat
d4: Soft Partition
Device: d0
State: Okay
Size: 106954752 blocks (51 GB)
Extent Start Block Block count
0 320864384 106954752
d0: Concat/Stripe
Size: 429835140 blocks (204 GB)
Stripe 0: (interlace: 32 blocks)
Device Start Block Dbase State Reloc Hot Spare
c2t1d0s0 16065 Yes Okay Yes
c2t2d0s0 16065 Yes Okay Yes
c2t3d0s0 16065 Yes Okay Yes
d3: Soft Partition
Device: d0
State: Okay
Size: 106954752 blocks (51 GB)
Extent Start Block Block count
0 213909600 106954752
d2: Soft Partition
Device: d0
State: Okay
Size: 106954752 blocks (51 GB)
Extent Start Block Block count
0 106954816 106954752
d1: Soft Partition
Device: d0
State: Okay
Size: 106954752 blocks (51 GB)
Extent Start Block Block count
0 32 106954752
Device Relocation Information:
Device Reloc Device ID
c2t1d0 Yes id1,sd@SSEAGATE_ST973401LSUN72G_3710ZJ07____________3LB0ZJ07
c2t2d0 Yes id1,sd@SSEAGATE_ST973401LSUN72G_3710ZGLR____________3LB0ZGLR
c2t3d0 Yes id1,sd@SSEAGATE_ST973401LSUN72G_3710Z1DG____________3LB0Z1DG
after this you can use soft partitions as you would be using any other partition, format them, mount, udsdump, ufsrestore etc ... for example:
root@jsc-x4100-17:~# echo y|newfs /dev/md/rdsk/d1 /dev/md/rdsk/d1: 106954752 sectors in 17408 cylinders of 48 tracks, 128
sectors
52224.0MB in 1088 cyl groups (16 c/g, 48.00MB/g, 5824 i/g)
super-block backups (for fsck -F ufs -o b=#) at:
32, 98464, 196896, 295328, 393760, 492192, 590624, 689056, 787488, 885920,
Initializing cylinder groups:
.....................
super-block backups for last 10 cylinder groups at:
105978656, 106077088, 106175520, 106273952, 106372384, 106470816, 106569248,
106667680, 106766112, 106864544
repeat this step for /dev/md/rdsk/d2 /dev/md/rdsk/d3 and /dev/md/rdsk/d4. when you'r finished you can happily mount soft partitions into locations where zones will be installed.
if you want to remove your metadevice/metadb use reversed steps:
first remove soft partitions from meta device
root@jsc-x4100-17:~# metaclear -p d0 d4: Soft Partition is cleared d3: Soft Partition is cleared d2: Soft Partition is cleared d1: Soft Partition is cleared
then remove metadevice
root@jsc-x4100-17:~# metaclear d0 d0: Concat/Stripe is cleared
and finaly metadb
root@jsc-x4100-17:~# metadb -f -d c2t1d0s0 c2t2d0s0 c2t3d0s0
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