On Fri, 2013-10-18 at 22:03 +-0200, Helge Deller wrote: +AD4- On 10/18/2013 09:36 PM, Myklebust, Trond wrote: +AD4- +AD4- Also, could you please try a sysRQ-t the next time it happens, so that +AD4- +AD4- we can get a trace of where the mount program is hanging. Knowing that +AD4- +AD4- the mount is stuck in +ACIAXwBf-schedule()+ACI- is not really interesting unless we +AD4- +AD4- know from where that was called. +AD4- +AD4- Actually, the machine was still running in this state. +AD4- Here is sysrq-t: +AD4- +AFs-112009.084000+AF0- mount S 00000000401040c0 0 25331 1 0x00000010 +AD4- +AFs-112009.084000+AF0- Backtrace: +AD4- +AFs-112009.084000+AF0- +AFsAPA-0000000040113a68+AD4AXQ- +AF8AXw-schedule+0x500/0x810- +AD4- +AFs-112009.232000+AF0- +AD4- +AFs-112009.232000+AF0- mount.nfs D 00000000401040c0 0 25332 25331 0x00000010 +AD4- +AFs-112009.232000+AF0- Backtrace: +AD4- +AFs-112009.232000+AF0- +AFsAPA-0000000040113a68+AD4AXQ- +AF8AXw-schedule+0x500/0x810- That makes no sense unless sysrq-t works differently on parisc than on other platforms. I'd expect the backtrace to at least include a system call. Parisc experts? -- Trond Myklebust Linux NFS client maintainer NetApp Trond.Myklebust+AEA-netapp.com www.netapp.com -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html