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тАО11-26-2008 10:07 AM
тАО11-26-2008 10:07 AM
LUNS not getting visible
I have configured a rx2660 server and presented LUNS to it from EVA4400. The OS installed is 11i v2.
When the system is shutdowned and then powered on, all the LUNS are visible and everything is fine...
Now when i reboot the system, the LUNS disappears...
1. When I do
# vgdisplay -v vg01
vgdisplay: Volume group not activated.
vgdisplay: Cannot display volume group "vg01".
2. When I do
# vgchange -a y vg01
vgchange: Warning: Couldn't attach to the volume group physical volume "/dev/dsk/c4t0d1":
The path of the physical volume refers to a device that does not
exist, or is not configured into the kernel.
vgchange: The path of the physical volume refers to a device that does not
exist, or is not configured into the kernel.
vgchange: Warning: couldn't query physical volume "/dev/dsk/c4t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query physical volume "/dev/dsk/c6t0d1":
The specified path does not correspond to physical volume attached to
this volume group
vgchange: Warning: couldn't query all of the physical volumes.
vgchange: Couldn't activate volume group "vg01":
Quorum not present, or some physical volume(s) are missing.
3. But when I do
# ioscan -fnCdisk
It shows all physical volume as CLAIMED
... and then ALLOWS me to ACTIVATE Volume Group "vg01"
The file /etc/lvmtab also looks fine...
Can ne1 help me out with this problem. Its urgent...
Regards,
Rajiv
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тАО11-26-2008 10:28 AM
тАО11-26-2008 10:28 AM
Re: LUNS not getting visible
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тАО11-26-2008 10:35 AM
тАО11-26-2008 10:35 AM
Re: LUNS not getting visible
but still it did not work
Even then LUNS happens to be INVISIBLE after reboot
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тАО11-26-2008 10:38 AM
тАО11-26-2008 10:38 AM
Re: LUNS not getting visible
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тАО11-26-2008 10:43 AM
тАО11-26-2008 10:43 AM
Re: LUNS not getting visible
But will that make any difference...
Cos after giving a proper shutdown command:
# shutdown -h now
the LUNS gets visible... its only during reboot that causes a problem...
Is it b'cos of some OS patch???
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тАО11-26-2008 11:24 AM
тАО11-26-2008 11:24 AM
Re: LUNS not getting visible
Is it b'cos of it???
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тАО11-26-2008 04:39 PM
тАО11-26-2008 04:39 PM
Re: LUNS not getting visible
Older firmware that might need upgrade.
Might want to see if putting a ioscan (with no options) in the lvmrc script before it activates all of the vgs help. This might "wakeup" the eva controller and make it more reliable.
Agree this is a stopgap till you diagnose the real issue. Any other systems on the san experiencing the same issue with that EVA ?
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тАО11-27-2008 01:44 AM
тАО11-27-2008 01:44 AM
Re: LUNS not getting visible
# switchshow
have a look for the port number that the cable is pluged into, and see if you can see the WWN. If you can see the WWN, the basic connection is there. It may be a masking issue on the EVA.
Sime.
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тАО11-30-2008 10:35 PM
тАО11-30-2008 10:35 PM
Re: LUNS not getting visible
Are using any Multipath Software.
Sometimes it is possible that the Multipath Software is positioned to run after the vgactivation . Which could cause the LUNS not available when vg activation takes.
Sagar
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тАО11-30-2008 10:55 PM
тАО11-30-2008 10:55 PM
Re: LUNS not getting visible
Are you able to see other's luns if not then check you cables which is connected to Storege box and check your syslog.log file also.
Before shutting down the box are you able to see those LUN's ?
Suraj