| Title: | LSM |
| Moderator: | SMURF::SHIDERLY |
| Created: | Mon Jan 17 1994 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 803 |
| Total number of notes: | 2852 |
Hi,
I have to move current mirrored system disks (/, /usr, swap1 and
swap2 - respectively on partitions a, g, b, h) from bus #2 and #4
(rz17 and rz33) to bus #0 and #1 (rz1 and rz9).
The reason is that the system is to become a member of an ASE
cluster, so bus 2 and 4 will be used for shared disks, and system disks
must be removed from bus #2 and #4.
The platform is AlphaServer 8200 / DU v3.2G
I intend to temporarily make a mirror with 4 plexes (the existing
rz17 and rz33 plus the new rz1 and rz9) and then remove rz17 and rz33
from the mirror.
Are the following steps correct/sufficient:
0 Plug in rz1 and rz9 (of course -;)
1 # disklabel rz0 and rz9 with partition offsets identical to those of
rz17 and rz33 (all disks are RZ28D)
2 # volsetup rz0 rz9
3 # volrootmir rz0 and rz9
4 # voldisk init rz1 rz1b rz1g rz1h rz9 rz9b rz9g rz9h
5 # voldg adddisk rz1 rz1b rz1g rz1h rz9 rz9b rz9g rz9h
6 # voldctl add disk rz1 rz9
7 # volassist mirror vol-rz1g and vol-rz9g
8 # halt
9 >>>set bootdef_dev dka100 dka900 dka1700 dka3300
10 >>>boot -fl s
11 remove rz17 and rz33 from the volumes
12 # halt
13 >>> set bootdef_dev dka100 dka900
Any help appreciated, thanks
Herv�
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 790.1 | oops | BALZAC::QUENIVET | Haec marginis exiguitas non caparet | Tue May 06 1997 09:59 | 1 |
In .0, please read rz1 instead of rz0. | |||||
| 790.2 | BACHUS::DEVOS | Manu Devos NSIS Brussels 856-7539 | Tue May 06 1997 18:02 | 22 | |
Herve,
> I have to move current mirrored system disks (/, /usr, swap1 and
> swap2 - respectively on partitions a, g, b, h) from bus #2 and #4
> (rz17 and rz33) to bus #0 and #1 (rz1 and rz9).
> The reason is that the system is to become a member of an ASE
> cluster, so bus 2 and 4 will be used for shared disks, and system
> disks must be removed from bus #2 and #4.
First of all, I want to say that its is not a good idea to have the
swap1 and swap2 areas on the same physical disk. The swap algorythm is
striping the pages to the two areas causing thus the disk to seek
between them... It is beter to have only one swap in this case.
Otherwyse, your procedure can work, except that in step 2, you should
replace the volsetup by a voldisksetup (surely a typo ...:-)
Also, you speak about Bus #2 and #4. has your system a KFTIA-A (with
embedded bus #0 to #3 ) or a KFTHA-AA ?
Manu.
| |||||
| 790.3 | BALZAC::QUENIVET | Haec marginis exiguitas non caparet | Wed May 07 1997 05:10 | 27 | |
Salut Manu (french speaking here)
> First of all, I want to say that its is not a good idea to have the
> swap1 and swap2 areas on the same physical disk.
I agree with you, but this is the way the customer has configured his
system.
> Otherwyse, your procedure can work, except that in step 2, you should
> replace the volsetup by a voldisksetup (surely a typo ...:-)
Grrmble. Wasn't a typo, it was an error. I'm so baffled with all those
vol* commands...so I'm often in doubt about which command is doing
what and when to use it with which args ... ;-)
> Also, you speak about Bus #2 and #4. has your system a KFTIA-A
> (with embedded bus #0 to #3 ) or a KFTHA-AA ?
The system currently has 1 KFTIA and will be upgraded with a KFTHA.
The customer intends to add more storage capacities (currently 40 disks
in a SW800)
Thanks for your advice
Herv�
| |||||