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Date: Tue, 10 Dec 2013 15:19:43 +0100
From: Peter Rajnoha <prajnoha@redhat.com>
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Subject: Re: [linux-lvm] dev node change
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On 12/09/2013 04:13 PM, Umar Draz wrote:
> Hi All
> 
> I have a SCSI share which i am  using linux initiator on my ubuntu. Its
> available for me in /dev/sdb
> 
> No I have created lvm group using the /dev/sdb. Today I just logut and
> login my scsi share but this time ubutnu gave me this as /dev/sdc
> instead of /dev/sdb.
> 
> due to this my lvm group is stuck, and its giving me the error
> 
> Input/output error
> 
> on pvdisplay or vgdisplay,
> 
> Any body help me how I can reslove this issue.?
> 

You should always deactivate your LVM volumes before
disconnecting the underlying iSCSI volumes and then when
you reconnect the iSCSI back, activate the LVM volumes
(or if autoactivation is used - meaning use_lvmetad=1
is set in lvm.conf, this activation happens automatically).

Alternatively, you can call vgchange --refresh when the
iSCSI is connected back.

-- 
Peter