3.1.2 MxFS-Linux Release Notes

Matrix File Serving Solution Pack for Linux 2

• Defect 12667. Under heavy I/O load conditions, it was possible for a

probe I/O request for an export group to be outstanding when the next

scheduled probe I/O was started. If this I/O load persisted for a period

of time, a large number of monitor threads could accumulate until the

I/O device became available again.

• Defect 12881. In previous releases, there was an unintended

interaction between the transition of IP addresses across cluster nodes

and the NFS locking subsystem. Occasionally a deadlock would occur,

halting the operation of an important component of PolyServe cluster

management. The potential for deadlock has now been removed.

• Defect 13095. The NSM vstatd daemon could terminate in error when

an NLM client concluded its locking activity.

• Defect 13315. The exportfssync process had difficulty parsing certain

valid export records, resulting in incomplete or corrupt records in

/etc/exports.

• Defect 13192. A small memory leak has been removed from a legacy

code path used by exportfssync.

• Defect 13547. In Linux kernels 2.6 through 2.6.11, a race condition in

the kernel RPC cache mechanism corrupted cache hash chains and

possibly triggered other problems related to memory corruption. The

race condition has been removed.

• Defect 13555. Given sufficient incoming work, an nfsd process could

monopolize a processor. The nfsd work loop now yields to other

runnable processes each time it processes an NFS operation.

• Defect 13602. The tool tip help for the “all_squash” and

“no_all_squash” Export Record options was reversed.

• Defect 13746. Export Records were not always parsed correctly in

accordance with domain wildcard rules and netmask rules.

• Defect 13758. A shut down of the nfsd kernel module could race with

configuration of transient-error suppression flags, resulting in bad

memory references inside the kernel. This race has been removed.

• Defect 14005. The NSM vstatddaemon was not monitored by the

Export Group probe.