It's not clear to me which kernel you're using but there is a patch that went in a short while ago that addressed a similar problem I think. There seems to be a mismatch in the DLM lockspace list and the device files that make them up which that patch addresses. So it's worth checking that your kernel has this patch included: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=241817 -- Patrick Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SL4 ITE, UK. Registered in England and Wales under Company Registration No. 3798903 -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster