On Mon, 2009-05-11 at 12:17 -0500, Eugene Vilensky wrote: > Hi folk, > > I tried to remove some NetApp LUNs from a RHEL 4.6 system, and > originally stale mappings remained in multipath -ll which I was not > able to flush. In production instance, I am unable to remove the > multipath mappings because the vg is missing. How can I deactivate a > missing vg? dmsetup remove <device name> In the future you probably want to unmount file systems, deactivate volume groups, delete kpartx mappings etc. and flush the multipath devices from the host before you delete the LUNs from the storage. This way everything on the Linux side can finish up cleanly and you aren't left with stale devices lying around. > However, the four paths remain in my /dev/ heirarchy, and vgscan > returns this for each of the devices that are no longer really there: > > /dev/sdf: read failed after 0 of 4096 at 0: Input/output error Once you've made sure nothing's left that's using these you should be able to remove the SCSI device using sysfs: echo 1 > /sys/block/<dev>/device/delete For each SCSI device that you have removed. Regards, Bryn. _______________________________________________ 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/
