create vg with sam

[Arnulf Gercke]

Customer has connected an rx2620 with hp-ux 11.23 and one hba to an msa1000.
Two LUNs were created on msa1000, the first with raid5, the second with raid0.
Both MSA-LUNs are shown in ioscan incl. special device files.
Customer now wants to create VGs with the MSA-LUNs.
Customer uses SAM.
Costomer says, in SAM he could only see one MSA-LUN (the one with raid5 protection)!

But:
Both MSA-LUNs seem to be ok:
Customer creates VG via SAM with the MSA-LUN, which was seen in SAM.
It was also possible to create a VG with the second MSA-LUN via "pvcreate/mkdir/mknod/vgcreate".
Then, logical volumes and filesystems were created on both MSA-LUNs .
All seems to be fine.

Could there be a reason, why the the second MSA-LUN was not shown in SAM?

[harry d brown jr]

SAM sometimes just can't handle the truth, which is why it's important to know the command line.

live free or die
harry d brown jr

[renarios]

Hi Arnulf,

Just don't create vg's using SAM. Create a nice manual to do it and do it manually.
To keep thing "kiss" (keep it simple shorty), try to keep all minor numbers equal on all cluster nodes. SAM doesn't do that too!

Cheers,

Renarios

[HGN]

Hi

I would always pefer to use the command line, using SAM for lvm looks little complicated.Command line is good and you could always read the man pages for vgcreate/vgextend

Rgds

HGN

[Arnulf Gercke]

Ok, thank you folks.

It seems that SAM is not as perfect
as it should be.