LV & PV issue !!!!

[SoorajCleris]

That was a stunning explanation .. I admire your Thorsten.. Keep going.

100 points from me :)

[Yogesh M Puranik]

@Torsten:Looks like you access the SAN via 1 switch only. Where is the connection to the other SAN?

- - - - -
u mean to say...the SAN access is happening via 1 switch only and not with other switch isn't it ??

but i will be very greatful to u if can u please explain me in brief,how u can predict the same?? and what is the relation of the same causing difference between cueernt and active PV??

appritiate ur help .

[Torsten.]

I was probably wrong. You are using a dual port HBA, 2/0/8/1/0/4/0... and 2/0/8/1/0/4/1..., I overlooked this.

However,
Cur PV 16
Act PV 11
means, there are 16 configured "disks", but only 11 are available. So you have no access to 5 disks/LUNs. Compare your ioscan with the VG configurations to find out which are missing.

[Sharma Sanjeev]

Hi Yogesh,

You can use vgreduce -f option,

This option does not require a physical volume to be supplied on the command line. vgreduce obtains the name of each physical volume belonging to the volume group from the file /etc/lvmtab. It then reads the LVM structures from each PV and compares these with that held by the kernel to work out which PVs are missing. PVs which are missing will be candidates for removal. If all the physical extents on the missing PV are free then it will be removed from the volume group


Regards
Sanjeev