unix command

[Ed Velasco]

hi,

what are the commands in UNIX to check the following:

1) # of disk
2) check if they are mirrored or in RAID

thanks,
ed

[Jov]

1) ioscan -fnC disk
This will include removable media, so be aware of it.

2) do a man on vgdisplay and lvdisplay. e.g.
vgdisplay -v

Also you can use SAM if you feel more confy.


Jov

[Torsten.]

1) ioscan -fnCdisk will give you all disk devices (including alternate links)

2) vgdisplay -v & lvdisplay -v will give you information about LVM mirrors

If you have hardware mirror you will need special commands!

[Anshumali]

1) ioscan -fnC disk
2) SAM->Disks and file system->Logical Volumes->Look for "Mirror Copies."

[Aussan]

ioscan -fnC disk will show you the number of disks

and vgdisplay -v vg# and get the logical volumes

lvdisplay /dev/vg#/lvol# and look for Mirror copies

if it's 0 it's not mirrored if more then it is mirrored

regards

Aussan

[Sudalaimani]

Hi


#vgdisplay vgxx|grep "Cur PV " ---- This will give the current no. of physical disks in the VG.

#lvdisplay /dev/vg00/lvol3|grep "Mirror copies" -- If it is 1 then it is mirrored.

regards

Mani

[Ed Velasco]

thank you all for your reply.

how to check if they are on RAID5?

[skt_skt]

You are interested to find if the disk is part of any RAID if yes whihc RAID type.

Do you have any RAID card on the system?
do a diskinfo.if it is SAN disk check with the storage which raid group it belongs to.
You can find out if you have root access and the commands depends on the whihc storage you use

[Ed Velasco]

we have an MSA1000 storage with several disks. RAID5 is configured. i want to double-check or confirm if indeed RAID5 is configured and what disks are part of the RAID.

thanks

[Torsten.]

For your OS this is just a disk, shown as "COMPAQ MSA1000 VOLUME".
Use a windows/inux server with ACU or the serial connection to check the MSA config.