I'm having an issue with LVM2 right now that has me a little worried. I have a system set up with a few RAID arrays attached via FC. Because there are multiple paths, I've configured one of these RAID arrays via multipathd. I set it up, configured it with multipath (it shows up under /dev/dm-18) and then used pvcreate to "mark" it as an LVM2 device. I then used vgcreate to create a volume group (called "raid50") using this pv as the only device in the volume group. This worked quite well for quite a while, until I deleted a LVM volume in a *different* volume group and now the raid50 volume group has disappeared. It gets stranger because the two volumes that are active on this volume group were exported with iSCSI and are still available. The devices entires in /dev/mapper and links in /dev/raid50 are still there and still appear to be working. However, none of the LVM2 commands will show this volume group or its member volumes. This has me a little worried as to what the result is going to be when I reboot the system, restart multipath, etc. So, I'm wondering if anyone has any diagnostic or recovery steps they can walk me through to diagnose why this has happened, what I might be able to do to recover it (without a reboot - this is a production iSCSI target server), and whether I'm going to see the volumes next time I reboot. Here's some information on versions of software, etc., I have running: - rPath Linux (it's actually the Openfiler 2.2 appliance) - Kernel Version: 2.6.19.7-0.1.x86.i686.cmov - LVM Version Info: LVM version: 2.02.09 (2006-08-17) Library version: 1.02.09 (2006-08-15) Driver version: 4.10.0 - Multipath Version: 0.4.7 I'd greatly appreciate any hints or advice in the matter. Thanks, Nick This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
