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
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! > > - RajaLVM 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? -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don't!!!! -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 258 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20080619/1ec280f1/attachment-0002.sig>
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?Check out: http://people.redhat.com/mchristi/iscsi/RHEL4/doc/readme I think the key here is to add the _netdev option in fstab for those filesystems over iSCSI, even using LVM. -Ross ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, 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.
Excellent! Glad it's working for you. -Ross ----- Original Message ----- From: centos-bounces at centos.org <centos-bounces at centos.org> To: CentOS mailing list <centos at centos.org> Sent: Sun Jun 22 04:09:59 2008 Subject: Re: [CentOS] lvm with iscsi devices on boot On Fri, Jun 20, 2008 at 1:04 AM, Ross S. W. Walker <RWalker at 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 _______________________________________________ CentOS mailing list CentOS at centos.org http://lists.centos.org/mailman/listinfo/centos ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, 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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20080623/530a2138/attachment-0002.html>