topic Re: Create RAID 1 on RX6600 in Integrity Servers

Create RAID 1 on RX6600

AZayed — Mon, 07 Feb 2011 12:17:04 GMT

Dears,
Good day,

We ordered a RX6600 with 6 disks and the built in SAS controller. Now, I need to create two RAID 1 volumes but my the system giving me "Bad addresses", what am I doing wrong ?

# sasmgr -N get_info -D /dev/sasd1 -q raid

Mon Feb 7 14:14:46 2011

---------- PHYSICAL DRIVES ----------
LUN dsf SAS Address Enclosure Bay Size(MB)

/dev/rdisk/disk10 0x5000c50031c0b859 1 7 286102
/dev/rdisk/disk11 0x5000c50031c08a7d 1 5 286102
/dev/rdisk/disk6 0x5000c50031b71a2d 1 3 286102
/dev/rdisk/disk7 0x5000c50031bff6b5 1 4 286102
/dev/rdisk/disk8 0x5000c50031c0596d 1 6 286102
/dev/rdisk/disk9 0x5000c50031c0b83d 1 8 286102

#
# sasmgr add -D /dev/sasd1 -q raid -q level=1 -q enc_bay=1:3,1:4

WARNING: If the disks are of different size,
then the remaining disk space of the larger disk
will be wasted and the volume cannot be expanded.

WARNING: Make sure that the disks are not being
used for BOOT, SWAP, DUMP, LVM, VxVM or any other
purpose.

This operation will overwrite the data on the disks.

Do you want to continue ?(y/n) [n]...

WARNING: This operation may take a few seconds.

ERROR: Unable to add a RAID volume: Bad address
#

escsi_ctlr 1 0/4/1/0 sasd CLAIMED INTERFACE HP PCI/PCI-X SAS MPT Adapter
ext_bus 0 0/4/1/0.0.0 sasd_vbus CLAIMED INTERFACE SAS Device Interface

Thanks a lot

Re: Create RAID 1 on RX6600

Jorge Pons — Mon, 07 Feb 2011 12:25:42 GMT

Hi

Can you post ioscan -funC disk.
I supposed you boot from other disks

Regards, Jorge

Re: Create RAID 1 on RX6600

AZayed — Mon, 07 Feb 2011 12:38:04 GMT

Hi,

# ioscan -funC disk
Class I H/W Path Driver S/W State H/W Type Description
=====================================================================
disk 5 0/4/1/0.0.0.0.0 sdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/dsk/c0t0d0 /dev/dsk/c0t0d0s2 /dev/rdsk/c0t0d0 /dev/rdsk/c0t0d0s2
/dev/dsk/c0t0d0s1 /dev/dsk/c0t0d0s3 /dev/rdsk/c0t0d0s1 /dev/rdsk/c0t0d0s3
disk 3 0/4/1/0.0.0.1.0 sdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/dsk/c0t1d0 /dev/rdsk/c0t1d0
disk 0 0/4/1/0.0.0.2.0 sdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/dsk/c0t2d0 /dev/rdsk/c0t2d0
disk 2 0/4/1/0.0.0.3.0 sdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/dsk/c0t3d0 /dev/rdsk/c0t3d0
disk 1 0/4/1/0.0.0.4.0 sdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/dsk/c0t4d0 /dev/rdsk/c0t4d0
disk 4 0/4/1/0.0.0.5.0 sdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/dsk/c0t5d0 /dev/dsk/c0t5d0s2 /dev/rdsk/c0t5d0 /dev/rdsk/c0t5d0s2
/dev/dsk/c0t5d0s1 /dev/dsk/c0t5d0s3 /dev/rdsk/c0t5d0s1 /dev/rdsk/c0t5d0s3
disk 12 255/1/0.0.0 sdisk CLAIMED DEVICE Optiarc DVD RW AD-5590A
/dev/dsk/c1t0d0 /dev/rdsk/c1t0d0
#
#
# ioscan -NfunC disk
Class I H/W Path Driver S/W State H/W Type Description
===================================================================
disk 6 64000/0xfa00/0x0 esdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/disk/disk6 /dev/disk/disk6_p2 /dev/rdisk/disk6 /dev/rdisk/disk6_p2
/dev/disk/disk6_p1 /dev/disk/disk6_p3 /dev/rdisk/disk6_p1 /dev/rdisk/disk6_p3
disk 7 64000/0xfa00/0x1 esdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/disk/disk7 /dev/rdisk/disk7
disk 8 64000/0xfa00/0x2 esdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/disk/disk8 /dev/rdisk/disk8
disk 9 64000/0xfa00/0x3 esdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/disk/disk9 /dev/disk/disk9_p2 /dev/rdisk/disk9 /dev/rdisk/disk9_p2
/dev/disk/disk9_p1 /dev/disk/disk9_p3 /dev/rdisk/disk9_p1 /dev/rdisk/disk9_p3
disk 10 64000/0xfa00/0x4 esdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/disk/disk10 /dev/rdisk/disk10
disk 11 64000/0xfa00/0x5 esdisk CLAIMED DEVICE HP EG0300FAWHV
/dev/disk/disk11 /dev/rdisk/disk11
disk 13 64000/0xfa00/0x6 esdisk CLAIMED DEVICE Optiarc DVD RW AD-5590A
/dev/disk/disk13 /dev/rdisk/disk13
#

Re: Create RAID 1 on RX6600

Jorge Pons — Mon, 07 Feb 2011 13:08:24 GMT

Hi

It looks Ok.
The only thing I append in command is size:

-q size=285000

Regards, Jorge

Re: Create RAID 1 on RX6600

AZayed — Mon, 07 Feb 2011 13:28:34 GMT

Thanks it's now working. Yesterday I used size option but I think the size was large.

Last question, is this SAS controller support Root Disk? Is it better than DiskMirror ??

Thanks

Re: Create RAID 1 on RX6600

Jorge Pons — Mon, 07 Feb 2011 14:38:20 GMT

Hi

Yes, it support.
When you talk about root disk, are you talking about DRD?
DRD is different from Mirror Disk.
DRD is for test boot environment and Mirror is for availability

Regards, Jorge

Re: Create RAID 1 on RX6600

Torsten. — Mon, 07 Feb 2011 14:47:06 GMT

>> is this SAS controller support Root Disk? Is it better than DiskMirror ??

Yes, such a mirror can be used as boot disk.

Yes, IMHO it is better to such the hardware mirror than the LVM mirror with such SAS disks, because the replacement is much, much easier.

Re: Create RAID 1 on RX6600

AZayed — Mon, 07 Feb 2011 14:47:33 GMT

Hi Jorge,

Actually, I was talking about SAS mirroring. In my case if I need to create a mirror on root disk I will write :

sasmgr add -D /dev/sasd1 -q raid -q level=1 -q enc_bay=1:8,1:7 -q size=286080

Does it work?

Re: Create RAID 1 on RX6600

Jorge Pons — Mon, 07 Feb 2011 14:50:05 GMT

Hi

Yes, it works.

Regards, Jorge

Re: Create RAID 1 on RX6600

Torsten. — Mon, 07 Feb 2011 14:52:27 GMT

CAUTION: If you do this on your current (non-RAID) boot disks (and you are doing so), the disks will be overwritten and the OS installation is GONE!

Re: Create RAID 1 on RX6600

Torsten. — Mon, 07 Feb 2011 14:55:17 GMT

Looks like disk6 and disk9 are your boot disks. In your first attempt you worked with disk6, now with disk9.

>>
WARNING: Make sure that the disks are not being
used for BOOT, SWAP, DUMP, LVM, VxVM or any other
purpose.

This operation will overwrite the data on the disks.

Re: Create RAID 1 on RX6600

Jorge Pons — Mon, 07 Feb 2011 14:55:22 GMT

Hi

Torsten is right.
if you do from sasmgr, you lose OS.
if you do from mirror-ux (lvextend -m1 ....) you can do online and you dont lose anything.

Regards, Jorge

Re: Create RAID 1 on RX6600

AZayed — Mon, 07 Feb 2011 14:55:26 GMT

Hi Torsten,

why it will be gone ?? HP installed the OS on disk on bay number 8 and I'm putting this as my first disk in the command.

Re: Create RAID 1 on RX6600

Torsten. — Mon, 07 Feb 2011 14:59:48 GMT

The command is telling you:

This operation will overwrite the data on the disks.

Reason is, the hardware raid will use the very last block on the disk, where currently the backup partition table is. Loosing the partition table means loosing the disk contents.

You will loose all data on the disk.

Re: Create RAID 1 on RX6600

AZayed — Mon, 07 Feb 2011 15:02:46 GMT

Okay guys, thanks a lot. but to make sure if I get it:

This command :
sasmgr add -D /dev/sasd1 -q raid -q level=1 -q enc_bay=1:8,1:7 -q size=286080

will overwrite the disk on bay 8 with the data on bay 7 witch mean I'm going to loos my OS.

As I told you the OS is on disk bay 8 and disk 7 is empty blank disk.

Thanks

Re: Create RAID 1 on RX6600

Torsten. — Mon, 07 Feb 2011 15:06:31 GMT

>> will overwrite the disk on bay 8 with the data on bay 7

No. It will just delete the data on both disks and create an *empty* mirrored disk.

Re: Create RAID 1 on RX6600

AZayed — Mon, 07 Feb 2011 15:13:02 GMT

Oh God, so at the end I have only MirrorDisk left to do it + DRD for disaster

Re: Create RAID 1 on RX6600

Torsten. — Mon, 07 Feb 2011 15:25:47 GMT

I would do one of the following:

1) backup with ignite, create the RAID, restore the image

2) create a DRD clone, create the RAID, boot the clone and LVM mirror the clone to the RAID, boot from RAID

3) create the RAID, LVM mirror the current boot disk to the RAID, unmirror from the non-RAID disk

Re: Create RAID 1 on RX6600

AZayed — Tue, 08 Feb 2011 07:38:49 GMT

Thanks a lot