MSA Storage Disks Upgrade

[rianui]

Should be plain disks. See the output below:

#vxiod
0 volume I/O daemons running

Is there any other way to confirm this?

[Torsten.]

The disk is obviously not under LVM or VxVM control.

So probably it is a raw volume for the database.

I have no clue if the database can handle a "growing" disk, if we just make the logical drive "bigger".

Can you ask the database folks how the drive is used?

[rianui]

Growing the existing volume would have been the best option. However there is a risk. The client does not have a backup of the data on the server....faulty backup device...complicated.

Here is what I suggest; to create a new logical volume from the new drives and mount them seperately. This way the client can move anything accupying the current volume that is not critical eg. logs to the new volume thus freeing space on the current volume.

[rianui]

In future, (when backups exist ) should I want to undo the configuration I suggested, I will need to delete that volume and expand the existing volume, right?

[Torsten.]

Sounds good.

[rianui]

Hi Torsten,

The decision was finally made :-)

The two new disks will build their own logical drive and mount it seperately instead of expanding the existing one. So here is my action plan:

1. Run command to assign both unassigned drives using raid 1+0 and a stripe size of 16kb.

External       1    5    36.4 GB        UNASSIGNED

External       2    5    36.4 GB        UNASSIGNED

#  saconfig /dev/ciss4 -R 1+0 -S 16 -p 1:5 -p 2:5

2. Scan the new volume under UX, create and mount it. Is this good?

Regards,

Rianui

[Torsten.]

Sounds good.

Once the logical drive is created, do an ioscan, then create the VG and the LVOL(s).

[rianui]

Hi Torsten,

It is done! You are just the best and I want to say THANK YOU! This was a first for me....different from the EVAs I'm used to. Thank you, thank you, thank you for your invaluable support. See the end result below.

# saconfig /dev/ciss4 -R 1+0 -S 16 -p 1:5 -p 2:5

CISS: RAID SA controller on hardware path 0/4/1/0/4/0 has detected a logical
      drive status change:
        Logical drive 1 transitioned from NOT CONFIGURED to OK
        Drive type: RAID 1+0 - Disk Mirroring

# Logical drive 1 created

# saconfig /dev/ciss4

---------- PHYSICAL DRIVES ----------

Location       Ch   ID   Size           Status

External       1    0    36.4 GB        OK
External       1    1    36.4 GB        OK
External       1    2    36.4 GB        OK
External       1    3    36.4 GB        OK
External       1    4    36.4 GB        OK
External       1    5    36.4 GB        OK
External       2    0    36.4 GB        OK
External       2    1    36.4 GB        OK
External       2    2    36.4 GB        OK
External       2    3    36.4 GB        OK
External       2    4    36.4 GB        OK
External       2    5    36.4 GB        OK

# bdf

/dev/vg01/lvbackup 34816000    3336 34540704    0% /mnt/dsk2

Best Regards,

Rianui

[Torsten.]

You are welcome!