[Linux-cluster] statfs() call on a GFS filesystem in recovery is blocking.

[Mathieu Avila]

Hello GFS team,

On a GNBD+GFS cluster, i am running a statfs() system call while 
crashing another node. The statfs() system call is blocked (this is 
normal) , but also uses 100% of the CPU, as if there was a busy waiting. 
When the fencing request is responded, the system call returns and all 
is back to normal.

I'm currently using a packaged version of GFS-6.1.5, not the latest 
stable branch of the CVS.

I have looked at gfs-kernel/src/gfs/super.c in "stat_gfs_async" and 
"stat_gfs_sync" to search for an active waiting but i'am just a GFS user 
so i don't understand all that it does.

Is this normal ? Any thoughts on this ?

--
Mathieu