The box hung again last night. No messages anywhere. Last time it happened after some kind of cfq scheduler error. I thought it was a good time to compile 2.6.11 with Con Kolivas’ 2.6.11-ck2 patchset. CITI’s 2.6.11 patches for NFSv4 applied cleanly on top, which includes all Trond Myklebust’s NFS fixes and CITI’s NFSv4 implementation. At some point I might actually get around to setting up NFSv4 even.

I ran,

sysctl -w vm.mapped=33
sysctl -w kernel.interactive=0

and it’s stable thus far. Excellent.

Unfortunately, after 48 hours it Oops’d when I brought it into single user mode for maintenance.