UNIX for Dummies Questions & Answers

Is this correct if I have to create 2 partions of 100 Gigs each? (spread accross (6) 36 Gig drives)

AVAILABLE DISK SELECTIONS:
0. c0t0d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3/sd@0,0
1. c0t1d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3/sd@1,0
2. c1t1d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3,1/sd@1,0
3. c1t2d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3,1/sd@2,0
4. c1t3d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3,1/sd@3,0
5. c1t4d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3,1/sd@4,0
6. c1t5d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3,1/sd@5,0
7. c1t6d0 <SUN36G cyl 24620 alt 2 hd 27 sec 107>
/pci@1f,4000/scsi@3,1/sd@6,0


1) Format each disk and create 2 - 17 G partitions on each drive(slice 4 and slice 5 for each disk)

2) create initial state database replicas (1 on each disk)

e.g. metadb -a -f c1t1d0 c1t2d0 c1t3d0 c1t4d0 c1t5d0 c1t6d0

3) use disksuite to join slices together making a logical partion of 100gig each?

Current partion of disks 2-7:
Part Tag Flag Cylinders Size Blocks
0 root wm 0 - 90 128.37MB (91/0/0) 262899
1 swap wu 91 - 181 128.37MB (91/0/0) 262899
2 backup wu 0 - 24619 33.92GB (24620/0/0) 71127180
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 182 - 24619 33.67GB (24438/0/0) 70601382
7 unassigned wm 0 0 (0/0/0) 0


Will I have to format these and reserve a small slice for database replica ? (This is the way they were purchased.)

I have read the documentation but I am confused as to the state of disk before creationg DB replicas? Should the whole disk(each slice) be unassigned?

Sol 8 installed on disk 0. Having trouble understanding how I should start and how disksuite will handle partions.

please help...

Hi,

I think you should be very carefull now !!!
Please always note down th excisting config of the format command before you take action !!

In this case your c0 disk will almost always be your root-disk. You definitly don't want to change that config !!!

So always start at c1 in this case. As you have all disks on the same controller there is no need to do split mirroring, etc. Just use a whole disk on c1t?d0s2 .Slice 2 is always the complete disk, so no need for re-config.

Please read the docs that can be found on sunsolve.sun.com This is the best site ever for finding Sun solution.
Be proud to do Sun maintenance !! Take your time to read the apropriate docs.

Regs David

I am confused as to the state of disk before creationg DB replicas? Should the whole disk(each slice) be unassigned?

What should the disk look like before adding replicas?

Ouch, I think I missed it here. Sorry !

Was reading about databases and stuff not reading well enough.

A replica DB should be always at least 1034 blocks. I don't think you will make it this way.
But isn't it that for root-disks you have a free Veritas license ? I believe so. Sorry to tell, but Solstice is not where you should be up to anymore.
You should just leave it the way it is now and encapsure these disks under Veritas, not bothering about replica databases and stuff anymore

If you still want it, I'dd definitly deep into sunsolve.sun.com or in this case maybe even better docs.sun.com
It has all you ever need. More than just a simple explanory of disksuite.

Regs David

Don't have the option to use veritas...........Thanks.


Should I repartition the 6 drives (say slice 0 = 128mb for database replica), slice 5 - 17 gig, slice 6 17 gig, for all 6 drives? (having 1 database replica for each drive on slice 0). Is this the way the disk is prepared to be use by disksuite?

I need to have 2 100 gig partitions when I am done.

If anyone can help,...it would be appreciated....

I am not real sure what you're asking. But disksuite uses slices as its building blocks. So you are going to need slices.

And all it can do is connect the slices. If you want a 100 gig partition, then you will need some slices that add up to 100 gigs.

As a standard in our company, every disksuite disk must have a database. So that's the only way that I have done it. Make this slice as small as format will allow.

to get 2 100 GB you have to stripe them (concart) [but i would prefer raid5.....]
what ever.....
prepair the disks:
slice 0 35,xxGB
slice 1 25mb

on each disk should be an replica (in my way s1),
metadb -a -f c0t0d0s1 cxtxdxs1 .....

now you can set up your stripe....

question:
c0t0d0 ? /pci@1f,4000/scsi@3/sd@0,0
ohh!?! isn't that your internal system (boot) disk? (or is it an ide maschine).... you should not include your system disks into the stripe... if one of the disks dies the system will die....
[[
why do you need so much space... make your system redundant..
c0t0d0 <--systemmirror--> c1t1d0
RAID5 >> the others
(1 hotspare)
]]