0

This is a linux system with a MegaRaid controller. MegaCli is installed. I currently have:

Virtual Drive: 0 (Target Id: 0)
Name                :
RAID Level          : Primary-6, Secondary-0, RAID Level Qualifier-3
Size                : 25.466 TB
...

Virtual Drive: 1 (Target Id: 1)
Name                :
RAID Level          : Primary-0, Secondary-0, RAID Level Qualifier-0
Size                : 223.062 GB
...

Virtual Drive: 2 (Target Id: 2)
Name                :
RAID Level          : Primary-0, Secondary-0, RAID Level Qualifier-0
Size                : 118.718 GB
...

Virtual Drive: 3 (Target Id: 3)
Name                :
RAID Level          : Primary-0, Secondary-0, RAID Level Qualifier-0
Size                : 111.281 GB
...

Now I would like to create another VD with a new disk that has been put in the system, but I don't want to have to put the server offline to do it via the MegaRaid tool/bios. I can do

megacli -CfgLdAdd -r0 [4:0] -a0

where 4 is the enclosure device ID and 0 is the slot number, and this should do the job just fine. However I am concerned with how it will affect the existing arrays and VDs. The 25TB array should remain untouched and I am simply concerned if creating the new VD from the new physical disk is safe to do, or am I risking the existing setup and, even worse, risking the data?

Will I be fine running the above command on the live system?

Thanks!

1

LV - Logical Volume

PD - Physical Disk

I did same thing multiple times with active raid1 LV built from two disk within. No data lose as a result. Moreover megacli will refuse to add new LV when PD is used in other LV.

0

Space out multiple VD add/delete operations on a given host by 60 seconds, as each locks up the HBA for a short time, and you don't want that to happen back to back.

Also, why are you still using megacli when storcli is available?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.