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List: hpux-admin
Subject: [HPADM] Multiple paths to a SAN disk
From: "Shaw, Marco" <Marco.Shaw () aliant ! ca>
Date: 2008-09-24 14:56:59
Message-ID: B708C920604DF74A9B259056B737AD8903984BB6 () nbexmb04 ! aliant ! icn
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Next question for today...
I might not explain this clearly enough...
Our HP-UX servers have 2 fiber connections acting as redundant paths to
our SAN. Basically, we use pvlinks for path failover. The system has
just been provided a new disk. Ioscan is listing the device twice
basically with a different c/t/d.
I can't find anything on how to configure this dual-path device to put
it into LV management. I run pvcreate against both, for example, then
move on? Pvlinks only comes into play after I have a VG?
Ultimately, I need to use this new disk to increase an existing LVOL.
In the lab, my plan is to use a existing disk to create a VG/LVOL, then
use this new disk to extend it.
(Our docs have gone missing, and our memory is starting to fail.)
I can't remember if pvlinks applies to disks or VGs. Likely the latter,
but I'm going to look that up after lunch.
Marco
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<p class=MsoNormal>Next question for today…<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I might not explain this clearly enough…<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Our HP-UX servers have 2 fiber connections acting as
redundant paths to our SAN. Basically, we use pvlinks for path failover.
The system has just been provided a new disk. Ioscan is listing the
device twice basically with a different c/t/d.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I can’t find anything on how to configure this
dual-path device to put it into LV management. I run pvcreate
against both, for example, then move on? Pvlinks only comes into play
after I have a VG?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Ultimately, I need to use this new disk to increase an
existing LVOL. In the lab, my plan is to use a existing disk to
create a VG/LVOL, then use this new disk to extend it.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>(Our docs have gone missing, and our memory is starting to
fail.)<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I can’t remember if pvlinks applies to disks or
VGs. Likely the latter, but I’m going to look that up after \
lunch.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Marco<o:p></o:p></p>
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