Date: Sat, 5 Mar 2016 14:21:22 +0300 From: Dmitry Sivachenko <trtrmitya@gmail.com> To: FreeBSD Stable ML <stable@freebsd.org> Subject: nfs_getpages: error 4 Message-ID: <A2A32332-4D9D-40DF-9DEC-EE9000879416@gmail.com>
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Hello, I am running a number of machines with /home mounted via nfs (FreeBSD 10.3-PRERELEASE #0 r294799, rw,bg,intr,soft). Sometimes I get the following messages in syslog: nfs_getpages: error 4 vm_fault: pager read error, pid NNN (myprog) After that I see I lot of processes stuck in "pfault" state (these are computational processes which use some files from NFS mount), they use 0% of CPU after that. On NFS server machine I see nothing strange in logs. procstat -kk for such stuck processes shows: PID TID COMM TDNAME KSTACK 85274 102056 myprog - mi_switch+0xbe sleepq_wait+0x3a _sleep+0x287 vm_waitpfault+0x8a vm_fault_hold+0xdd0 vm_fault+0x77 trap_pfault+0x180 trap+0x52c calltrap+0x8 What can be the reason of this? Thanks.help
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