My CentOS 5.1 server is using iSCSI attached disks connecting
to a dual controller storage array. I have also configured multipathd
to manage the multiple paths. Everything works well, and on
boot the dev nodes are automatically created in /dev/mapper.
On these devices, I have created logical volumes using lvm2.
My problem is that lvm does not recognize these iscsi/multipath
volumes on boot up. I need to manually run "vgchange -ay"
and mount the logical volumes by hand.
I tried running the vgchange and mount commands from
/etc/rc.local, but that has no effect. I have verified that
/etc/rc.local itself is executing correctly.
What do I need to put in my boot up scripts so logical volumes
in iscsi/multipathd devices are automatically recognized on boot?
TIA!
- Raja
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06-19-2008, 06:48 PM
Scott Silva
lvm with iscsi devices on boot
on 6-19-2008 11:42 AM Raja Subramanian spake the following:
Hi All,
My CentOS 5.1 server is using iSCSI attached disks connecting
to a dual controller storage array. I have also configured multipathd
to manage the multiple paths. Everything works well, and on
boot the dev nodes are automatically created in /dev/mapper.
On these devices, I have created logical volumes using lvm2.
My problem is that lvm does not recognize these iscsi/multipath
volumes on boot up. I need to manually run "vgchange -ay"
and mount the logical volumes by hand.
I tried running the vgchange and mount commands from
/etc/rc.local, but that has no effect. I have verified that
/etc/rc.local itself is executing correctly.
What do I need to put in my boot up scripts so logical volumes
in iscsi/multipathd devices are automatically recognized on boot?
TIA!
- Raja
LVM initialization is fairly early in the init. It is probably running long
before your iscsi connector is starting. Maybe you could try moving its
startup earlier?
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06-19-2008, 07:34 PM
"Ross S. W. Walker"
lvm with iscsi devices on boot
Raja Subramanian wrote:
> Hi All,
>
> My CentOS 5.1 server is using iSCSI attached disks connecting
> to a dual controller storage array. I have also configured multipathd
> to manage the multiple paths. Everything works well, and on
> boot the dev nodes are automatically created in /dev/mapper.
> On these devices, I have created logical volumes using lvm2.
>
> My problem is that lvm does not recognize these iscsi/multipath
> volumes on boot up. I need to manually run "vgchange -ay"
> and mount the logical volumes by hand.
>
> I tried running the vgchange and mount commands from
> /etc/rc.local, but that has no effect. I have verified that
> /etc/rc.local itself is executing correctly.
>
> What do I need to put in my boot up scripts so logical volumes
> in iscsi/multipathd devices are automatically recognized on boot?
I think the key here is to add the _netdev option in fstab for
those filesystems over iSCSI, even using LVM.
-Ross
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06-22-2008, 08:09 AM
"Raja Subramanian"
lvm with iscsi devices on boot
On Fri, Jun 20, 2008 at 1:04 AM, Ross S. W. Walker
<RWalker@medallion.com> wrote:
> I think the key here is to add the _netdev option in fstab for
> those filesystems over iSCSI, even using LVM.
I got a chance to reboot the server this weekend and happy
to report that my iscsi/multipath/lvm volumes are discovered
and automatically mounting on boot.
It worked! Thanks :-)
- Raja
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06-23-2008, 01:14 PM
"Ross S. W. Walker"
lvm with iscsi devices on boot
Title: Re: [CentOS] lvm with iscsi devices on boot
Subject: Re: [CentOS] lvm with iscsi devices on boot
On Fri, Jun 20, 2008 at 1:04 AM, Ross S. W. Walker
<RWalker@medallion.com> wrote:
> I think the key here is to add the _netdev option in fstab for
> those filesystems over iSCSI, even using LVM.
I got a chance to reboot the server this weekend and happy
to report that my iscsi/multipath/lvm volumes are discovered
and automatically mounting on boot.
It worked!* Thanks :-)
- Raja
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of this e-mail, you are hereby notified that any dissemination,
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is strictly prohibited. If you have received this e-mail in error,
please immediately notify the sender and permanently delete the
original and any copy or printout thereof.
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lvm with iscsi devices on boot
