Category Archives: Fiber Channel

slow detection of SAN LUNs

After moving our Xen cluster to new servers, we noticed a strange behavior: While the first VMs would start immediately,  later VMs (having started about 20 VMs) would not come up: The NPIV-configured LUNs couldn’t be attached in Dom0.

Posted in DSS, Fiber Channel, Linux, NPIV, SCST, SLES (SUSE Linux Enterprise Server) | Leave a comment

Booting SLES with root file system on “late media”

Sorry for the weird title – it’s about booting a SLES server when the device for the root file system will initialize later than expected. We’ve experienced this issue with our Fiber Channel setup and raised a bug report with … Continue reading

Posted in Fiber Channel, Linux, SLES (SUSE Linux Enterprise Server) | Leave a comment

Optimizing, it ain’t easy, but somebody’s got to do it!

Some problems can be solved by throwing big money at them. When it comes to storage performance, it could be spending your bucks on faster and/or more disks, or paying someone to optimize your environment. For people like me, that’s … Continue reading

Posted in DSS, Ethernet, Fiber Channel, Linux, NPIV, SCST | Tagged | Leave a comment