3 Copies Mirror

[Benoît]

Hi,

I have a mirror between disks (36GB) c0t2d0 and c0t3d0 for lvoldata.
Assume that I have c1t0d0 (73GB)
If I want a third copy of this mirror, is it right to do:
vgextend vgdata /dev/c1t0d0
lvextend -m 2 lvoldata /dev/c1t0d0

Is that ok?

Thanks

[Gavin Clarke]

Looks good to me.

[melvyn burnard]

looks good with minor change:
vgextend vgdata /dev/c1t0d0 ->
vgextend vgdata /dev/dsk/c1t0d0
lvextend -m 2 lvoldata /dev/c1t0d0 ->
lvextend -m 2 /dev/vgdata/lvoldata /dev/dsk/c1t0d0

[Gavin Clarke]

Doh, I should have spotted the missing dsk. I interpreted the lvoldata to be the full path, which was a bit of a rash assumption too I guess.

It will probably take a while.

[Benoît]

Of course Melvyn!
This was just writen a bit too fast :-)

Thanks guys!

[Pedro Cirne]

Hi,

That's OK.

Just check:

-Max PE per PV...if vg was created with the defaults, probably you'll not be able to use a 73Gb PV on vgdata

-Max number of PV, are you able to add one more PV to your VG?

Enjoy :)

Pedro

[melvyn burnard]

Gavin/Benoit
No problem, we are all human and as they say:
To err is human,
to really foul it up takes a computer

[Benoît]

Talking about problems ...

There is one!

Just installed new SCSI card with 2 Disk Array 2100, one disk in each.

Disks are UNCLAIMED:
unknown -1 0/8/0/0 SCAN UNKNOWN PCI SCSI (10000021)
unknown -1 0/8/0/1 SCAN UNKNOWN PCI SCSI (10000021)

What shall I do ?

[melvyn burnard]

looks like a driver is missing from the kernel, either a scsi driver (does it claim the I/O card?)
or a disc driver (disc3?)
depends on the system and OS release.

[Benoît]

I don't see the card.

ba 6 0/8 lba CLAIMED BUS_NEXUS Local PCI Bus Adapter (782)
unknown -1 0/8/0/0 UNCLAIMED UNKNOWN PCI SCSI (10000021)
unknown -1 0/8/0/1 UNCLAIMED UNKNOWN PCI SCSI (10000021)

Should be there, no?