mirror disk

[TSYO]

Hi,

I would like know what is the command to make a mirror disk. I don't need a synchronous vol, but a vol formed by a mirrorized disk.

Have I explained myself with clarity?

Thanks

[Jakes Louw]

Hi

"lvextend -m 1 lv_path [pv_path....|pvg_name....]"

Do man on lvextend.

[David_246]

what Volume Mnagaement Software are you using?

Regs David

[G. Vrijhoeven]

Hi,


If the disk is mirrored using lvm. ( MirrorUX) It is mirrored on logical volume level.

So lvdisplay /dev/vg??/lvol?? will give you info on the mirror status.

Mirror copies 1

HTH,

Gideon

[Stefan Farrelly]

Im not sure what you mean but to create a mirror disk is easy;

1) locate a spare unused disk at least the same size as existing disk to be mirrored.
2) pvcreate -B it
3) mkboot it
4) add it to your VG
5) lvextend -m 1 each lvol to create the mirror.

You need the MIRROR/UX software installed to do this.

[G. Vrijhoeven]

Hi,

Sorry,

lvcreate -m 1 /dev/vg0?/lvol is the command to add a mirror copy. lvdisplay is the command to view.

Gideon

[Fabio Ettore]

Hi,

by using MirroDisk/UX it is logical volume-based. I mean that you should extend mirror on another disk for each logical volume:

# lvextend -m 1 /dev/vgXX/lvolX /dev/dsk/cYtYdY

Best regards,
Ettore

[TSYO]

I have two new disks. I want make a mirror of them. I don´t want "lvcreate -m1....".

Can i do this or I can only make a mirrorized lvol?

Thanks again

[Jakes Louw · Accepted solution]

You can only make mirrored LVOLs with LVM.

[Jakes Louw]

However: you can do a dd to create a copy, but I need to understand your motives for this:

dd if=/dev/dsk/sourcedisk of=/dev/dsk/destinationdisk bs=1024k

[TSYO]

Ops...

I wanted it to be able to create volumenes without worrying to select the option to me of the mirror.

On this host several people works. It is necessary to control that they did not create volumenes without mirrror.

Thank you very much by your aid.

[Mark Grant]

No, you can only mirror on a logical volume basis. This is not a limitation, it makes for things being much more flexible.