topic Re: raid 1 in Operating System - HP-UX

raid 1

Joe Lear — Thu, 03 Sep 2009 17:03:15 GMT

I have a disk thats mirrored, but I can't see the mirror. Is there a way to verify that raid 1 (hardware) is in effect?

thanks in advance

Re: raid 1

Tingli — Thu, 03 Sep 2009 17:08:00 GMT

Depends on where are those disks located, and how they are mirrored and etc..

Re: raid 1

James R. Ferguson — Thu, 03 Sep 2009 17:09:12 GMT

Hi Joe:

Assuming that you have a SmartArray :

# sasmgr get_info -D /dev/sasd0 -q raid

Regards!

...JRF...

Re: raid 1

Torsten. — Thu, 03 Sep 2009 17:13:10 GMT

Please post

# model

# ioscan -fn

Re: raid 1

Joe Lear — Thu, 03 Sep 2009 17:25:23 GMT

sorry:

MODEL:9000/800/rp4440

Class I H/W Path Driver S/W State H/W Type Description
=============================================================================
root 0 root CLAIMED BUS_NEXUS
ioa 0 0 sba CLAIMED BUS_NEXUS System Bus Adapter (880)
ba 0 0/0 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
tty 0 0/0/1/0 asio0 CLAIMED INTERFACE PCI SimpleComm (103c1290)
/dev/diag/mux0 /dev/mux0 /dev/tty0p0
tty 1 0/0/1/1 asio0 CLAIMED INTERFACE PCI Serial (103c1048)
/dev/GSPdiag1 /dev/diag/mux1 /dev/mux1 /dev/tty1p0 /dev/tty1p2 /dev/tty1p4
usb 0 0/0/2/0 hcd CLAIMED INTERFACE NEC USB Interface
usbhub 0 0/0/2/0.1 hub CLAIMED DEVICE USB Root Hub
usb 1 0/0/2/1 hcd CLAIMED INTERFACE NEC USB Interface
usbhub 1 0/0/2/1.1 hub CLAIMED DEVICE USB Root Hub
/dev/hub
usb 2 0/0/2/2 ehci CLAIMED INTERFACE NEC USB Interface
sideba 0 0/0/3/0 side_ba CLAIMED INTERFACE CMD IDE controller
ext_bus 0 0/0/3/0.0 side CLAIMED INTERFACE IDE Primary Channel
target 0 0/0/3/0.0.0 tgt CLAIMED DEVICE
disk 0 0/0/3/0.0.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-N
/dev/cdrom /dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
target 1 0/0/3/0.0.7 tgt CLAIMED DEVICE
ctl 0 0/0/3/0.0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c0t7d0
ext_bus 1 0/0/3/0.1 side CLAIMED INTERFACE IDE Secondary Channel
target 2 0/0/3/0.1.7 tgt CLAIMED DEVICE
ctl 1 0/0/3/0.1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c1t7d0
ba 1 0/1 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
ext_bus 2 0/1/1/0 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011
/dev/mpt2
target 3 0/1/1/0.0 tgt CLAIMED DEVICE
disk 1 0/1/1/0.0.0 sdisk CLAIMED DEVICE HP 300 GST3300655LC
/dev/dsk/c2t0d0 /dev/rdsk/c2t0d0
target 6 0/1/1/0.1 tgt CLAIMED DEVICE
disk 2 0/1/1/0.1.0 sdisk CLAIMED DEVICE HP 300 GST3300655LC
/dev/dsk/c2t1d0 /dev/rdsk/c2t1d0
target 4 0/1/1/0.7 tgt CLAIMED DEVICE
ctl 2 0/1/1/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c2t7d0
ext_bus 3 0/1/1/1 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011
/dev/mpt3
target 5 0/1/1/1.7 tgt CLAIMED DEVICE
ctl 3 0/1/1/1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c3t7d0
lan 0 0/1/2/0 iether CLAIMED INTERFACE HP AB352-60001 PCI/PCI-X 1000Base-T Dual-port Core
lan 1 0/1/2/1 iether CLAIMED INTERFACE HP AB352-60001 PCI/PCI-X 1000Base-T Dual-port Core
ba 2 0/2 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
ba 3 0/4 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
ba 4 0/5 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
ba 5 0/6 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
memory 0 8 memory CLAIMED MEMORY Memory
ipmi 0 16 ipmi CLAIMED INTERFACE IPMI Controller
/dev/ipmi
processor 0 128 processor CLAIMED PROCESSOR Processor
processor 1 129 processor CLAIMED PROCESSOR Processor

Re: raid 1

Joe Lear — Thu, 03 Sep 2009 17:28:29 GMT

Sorry, that was a bit messy, lets try this again...:

MODEL:9000/800/rp4440

Class I H/W Path Driver S/W State H/W Type Description
=============================================================================
root 0 root CLAIMED BUS_NEXUS
ioa 0 0 sba CLAIMED BUS_NEXUS System Bus Adapter (880)
ba 0 0/0 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
tty 0 0/0/1/0 asio0 CLAIMED INTERFACE PCI SimpleComm (103c1290)
/dev/diag/mux0 /dev/mux0 /dev/tty0p0
tty 1 0/0/1/1 asio0 CLAIMED INTERFACE PCI Serial (103c1048)
/dev/GSPdiag1 /dev/diag/mux1 /dev/mux1 /dev/tty1p0 /dev/tty1p2 /dev/tty1p4
usb 0 0/0/2/0 hcd CLAIMED INTERFACE NEC USB Interface
usbhub 0 0/0/2/0.1 hub CLAIMED DEVICE USB Root Hub
usb 1 0/0/2/1 hcd CLAIMED INTERFACE NEC USB Interface
usbhub 1 0/0/2/1.1 hub CLAIMED DEVICE USB Root Hub
/dev/hub
usb 2 0/0/2/2 ehci CLAIMED INTERFACE NEC USB Interface
sideba 0 0/0/3/0 side_ba CLAIMED INTERFACE CMD IDE controller
ext_bus 0 0/0/3/0.0 side CLAIMED INTERFACE IDE Primary Channel
target 0 0/0/3/0.0.0 tgt CLAIMED DEVICE
disk 0 0/0/3/0.0.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-N
/dev/cdrom /dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
target 1 0/0/3/0.0.7 tgt CLAIMED DEVICE
ctl 0 0/0/3/0.0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c0t7d0
ext_bus 1 0/0/3/0.1 side CLAIMED INTERFACE IDE Secondary Channel
target 2 0/0/3/0.1.7 tgt CLAIMED DEVICE
ctl 1 0/0/3/0.1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c1t7d0
ba 1 0/1 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
ext_bus 2 0/1/1/0 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011
/dev/mpt2
target 3 0/1/1/0.0 tgt CLAIMED DEVICE
disk 1 0/1/1/0.0.0 sdisk CLAIMED DEVICE HP 300 GST3300655LC
/dev/dsk/c2t0d0 /dev/rdsk/c2t0d0
target 6 0/1/1/0.1 tgt CLAIMED DEVICE
disk 2 0/1/1/0.1.0 sdisk CLAIMED DEVICE HP 300 GST3300655LC
/dev/dsk/c2t1d0 /dev/rdsk/c2t1d0
target 4 0/1/1/0.7 tgt CLAIMED DEVICE
ctl 2 0/1/1/0.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c2t7d0
ext_bus 3 0/1/1/1 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011
/dev/mpt3
target 5 0/1/1/1.7 tgt CLAIMED DEVICE
ctl 3 0/1/1/1.7.0 sctl CLAIMED DEVICE Initiator
/dev/rscsi/c3t7d0
lan 0 0/1/2/0 iether CLAIMED INTERFACE HP AB352-60001 PCI/PCI-X 1000Base-T Dual-port Core
lan 1 0/1/2/1 iether CLAIMED INTERFACE HP AB352-60001 PCI/PCI-X 1000Base-T Dual-port Core
ba 2 0/2 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
ba 3 0/4 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
ba 4 0/5 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
ba 5 0/6 lba CLAIMED BUS_NEXUS Local PCI-X Bus Adapter (783)
memory 0 8 memory CLAIMED MEMORY Memory
ipmi 0 16 ipmi CLAIMED INTERFACE IPMI Controller
/dev/ipmi
processor 0 128 processor CLAIMED PROCESSOR Processor
processor 1 129 processor CLAIMED PROCESSOR Processor

Re: raid 1

Steven E. Protter — Thu, 03 Sep 2009 17:28:30 GMT

Shalom,

raid 1 hardware is not visible to the system.

The hardware raid presents a single disk to the system.

You can see the configuration if you have the PSP for HP-UX software package installed. You can connect to a web server and see hardware configuration.

Or you can boot the system at the console and bring up the BIOS based configuration and display utility.

SEP

Re: raid 1

Torsten. — Thu, 03 Sep 2009 17:30:25 GMT

Sorry, but there is hardware RAID.

Please post

# strings /etc/lvmtab

# vgdisplay -v vg00

Re: raid 1

Torsten. — Thu, 03 Sep 2009 17:31:04 GMT

Sorry, but there is **NO** hardware RAID.

Re: raid 1

TTr — Thu, 03 Sep 2009 17:35:49 GMT

> ext_bus 2 0/1/1/0 mpt CLAIMED INTERFACE SCSI Ultra320 A6961-60011 /dev/mpt2
> target 3 0/1/1/0.0 tgt CLAIMED DEVICE
disk 1 0/1/1/0.0.0 sdisk CLAIMED DEVICE HP 300 GST3300655LC /dev/dsk/c2t0d0 /dev/rdsk/c2t0d0
> target 6 0/1/1/0.1 tgt CLAIMED DEVICE
disk 2 0/1/1/0.1.0 sdisk CLAIMED DEVICE HP 300 GST3300655LC

Re: raid 1

Tingli — Thu, 03 Sep 2009 17:37:00 GMT

Right. rp4440 has 2 local disk drive in the system. I think it need soft mirror instead of hard mirror.

Re: raid 1

TTr — Thu, 03 Sep 2009 17:37:29 GMT

I fast fingered my previous reply. There are only two SCSI disks on the server and as pointed out, no HW raid. You should hope that the two disks are OS (most likely LVM) mirrored.

Re: raid 1

mvpel — Thu, 03 Sep 2009 18:20:44 GMT

Look at the output of "lvdisplay" for one of the logical volumes, or do "vgdisplay -v" for the volume group.

Mirrored logical volumes will have twice as many physical extents (PE) as logical extents (LE) in that output.

And if you do "lvdisplay -v" on a volume, it will show you the entire list of extents, and which physical extents they're mapped to. A mirrored disk will have two columns of physical extents.