ioscan NO_HW but disks visible & usable

[Adriaan Mosseveld_2]

We are running an rx7620 with version 11.23 and external storage is provided by an IBM DS4300.

When I run ioscan, all external disks show up as NO_HW however we can see and use the disks with no apparent issues. However, when I try to assign additional storage to the server, the new disks do not show up in the ioscan list.

I know there was a patch for ioscan running under 11.11 to fix a similar issue with disk paths starting with 255 (which these ones do), but cannot find a similar patch for 11.23

Any advice on this one would be appreciated.

Thanks, Adriaan

[NMory]

How does you volume groups should up?, when you run vgdisplay, pvdisplay, etc...

What happends if you do a pvdisplay in one of those disks that show up like that?

Have you run vgchange at some point, and have you made some recent changes?

LN

[NMory]

Sorry, retyping...

How does your volume groups show up?, when you run vgdisplay, pvdisplay, etc...

What happends if you do a pvdisplay in one of those disks that show up like that?

Have you run vgchange at some point, and have you made some recent changes?

LN

[IT_2007]

Try to run ioscan -fn; insf -e
and check that you are seeing new devices. NO_HW devices might be old device files and not usable since something is changed like removed from LVM.

[Adriaan Mosseveld_2]

Thanks for the quick replies. The disks are current, not old device files. vgdisplay is as expected, and pvdisplay shows the correct information - in fact, if ioscan was not reporting NO_HW, I would have no concerns, as the filesystems are useable but we would obviously like to resolve this discrepancy as the users have some concerns that the system is showing some inconsistency in the information it is returning.

Looking at the ioscan again, we seem to have the same issue with the DVD rom and the rereporting problem with the disks appears to start with the iscsi card.

iscsi 0 255/0 iscsi CLAIMED VIRTBUS iSCSI Virtual N
ode
ext_bus 4 255/0/0.0 iscsial NO_HW INTERFACE iSCSI-SCSI Prot
ocol Interface
target 7 255/0/0.0.0 tgt NO_HW DEVICE
disk 3 255/0/0.0.0.0 sdisk NO_HW DEVICE FALCON IPSTOR
DISK
/dev/dsk/c4t0d0 /dev/rdsk/c4t0d0
disk 4 255/0/0.0.0.1 sdisk NO_HW DEVICE FALCON IPSTOR
DISK
/dev/dsk/c4t0d1 /dev/rdsk/c4t0d1
disk 5 255/0/0.0.0.2 sdisk NO_HW DEVICE FALCON IPSTOR
DISK
/dev/dsk/c4t0d2 /dev/rdsk/c4t0d2
disk 6 255/0/0.0.0.3 sdisk NO_HW DEVICE FALCON IPSTOR
DISK
/dev/dsk/c4t0d3 /dev/rdsk/c4t0d3
disk 7 255/0/0.0.0.4 sdisk NO_HW DEVICE FALCON IPSTOR
DISK
/dev/dsk/c4t0d4 /dev/rdsk/c4t0d4
disk 8 255/0/0.0.0.5 sdisk NO_HW DEVICE FALCON IPSTOR
DISK
/dev/dsk/c4t0d5 /dev/rdsk/c4t0d5

I will keep looking and if I find anything I will post it here.

[Steven E. Protter]

Shalom Adriaan,

You do seem to have an anamoly here.

Controller 4 shows NO-HW yet the disks are good.

I think the problem with the controller will eventually cause disk problems so have hardware replace the controller and be done with it.

SEP