On Wed, 2008-11-12 at 19:14 +0530, lingu wrote: > cluquorumd[1921]: <warning> Disk-TB: Detected I/O Hang! Eep. This means that I/O to shared storage has gotten slow. Strange. I heard reports of this on another cluster (after going from U3->U8), but I don't know what the cause is. With this cluster, we straced the cluquorumd process and found that it was slowing down *a lot* in the write() call when writing to shared storage. You can try the current U9+erratum clumanager or the test release if you want to (it makes unlock more robust when I/O performance is slow for some reason). However, someone really needs to profile the kernel if you're seeing slow write times while stracing cluquorumd... -- Lon -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
