On Tue, Oct 03, 2000 at 06:23:13PM +0200, Frank van der Linden wrote:
> Date: Tue, 3 Oct 2000 18:23:13 +0200
> From: Frank van der Linden <fvdl@wasabisystems.com>
> To: Sam <sam@epita.fr>
> Cc: netbsd-users@netbsd.org, tech-kern@netbsd.org
> Subject: Re: Nfs clients get frozen when NFS server crashes...
> 
> On Tue, Oct 03, 2000 at 05:05:28PM +0000, Sam wrote:
> > 
> > When this hapenns all the netbsd clients that try to access the exported file systems 
> > which are not accessible, get stuck, and sometimes get completely frozen.
> 
> When this happens, could you, in addition to the other suggestions,
> run a 'ps xl' (as root) on a client that hangs, and report on its
> output? The "WCHAN" field is of importance, it shows what the processes
> are waiting for in the kernel.
> 
> - Frank


(rs@gamorreens 2)ps xl
  UID   PID  PPID CPU PRI NI   VSZ  RSS WCHAN  STAT TT       TIME COMMAND
    0     0     0   0 -18  0     0 16356 schedu DLs  ??    0:00.03 (swapper)
    0     1     0   0  10  0   228  144 wait   Is   ??    0:00.01 init 
    0     2     0   0 -18  0     0 16356 daemon DL   ??    0:00.00 (pagedaemon)
    0     3     0   0 -18  0     0 16356 reaper DL   ??    0:00.29 (reaper)
    0   104     1   0   2  0    96  428 select Is   ??    0:00.20 syslogd 
    0   108     1   0   2  0    64  444 select Is   ??    0:00.13 portmap -l 
    0   110     1   0   2  0   396  788 select Is   ??    0:02.22 ypserv 
    0   123     1   0   2  0    92  456 select Ss   ??    0:01.27 ypbind 
    0   137     1   0  10  0    16  352 nfsidl IL   ??    0:00.29 nfsiod -n 4 
    0   138     1   0  10  0    16  352 nfsidl IL   ??    0:00.02 nfsiod -n 4 
    0   139     1   0  10  0    16  352 nfsidl IL   ??    0:00.00 nfsiod -n 4 
    0   140     1   0  10  0    16  352 nfsidl IL   ??    0:00.00 nfsiod -n 4 
    0   166     1   0  18  0    16  336 pause  Is   ??    0:01.21 update 30 
    0   168     1   0  10  0   260  552 nanosl Is   ??    0:00.21 cron 
    0   170     1  22   2  0   124  512 select Is   ??    0:00.01 lpd 
    0   173     1   0   2  0    80  532 select Is   ??    0:00.01 inetd -l 
    0   176     1   0   2  0   168  948 select Is   ??    0:00.02 xdm 
    0   184   176   0   2  0  6336 20872 select Is   ??    1:14.29 /usr/X11R6/bin/X -bpp 16 -auth /usr/X11R6/lib/X11/xdm/authdir/authfiles/A
    0   186     1   0   2  0   208  884 select Is   ??    0:00.68 /usr/pkg/sbin/sshd 
    0   812   176   0  10  0   276 1556 wait   Is   ??    0:00.05 xdm: :0 session 
    0   868   845   0   2  0   408 1724 select I    ??    0:00.31 xterm 
    0   905   867   0   2  0   436 1752 select I    ??    0:02.25 xterm 
    0   921   867   0   2  0   396 1712 select I    ??    0:00.49 xterm 
    0   923   867   0   2  0   452 1768 select I    ??    0:00.22 xterm 
    0  4019   186   0   2  0   352 1196 select I    ??    0:00.10 sshd: rn@ttyp4 
    0  4044   186   0   2  0   344 1184 select S    ??    0:00.06 sshd: rs@ttyp5 
    0  4020  4019   0   3  0   556 1040 ttyin  Is+  p4    0:00.13 -tcsh 
    0  4025  4020   0  -1  0    64   40 nfsrcv D    p4    0:00.00 df 
    0  4027  4020   0  -1  0    64   40 nfsrcv D    p4    0:00.00 df 
    0  4033  4020   0  -1  0    64   40 nfsrcv D    p4    0:00.00 df 
    0  4035  4020   0  -1  0    64   40 nfsrcv D    p4    0:00.00 df 
    0  4041  4020   0  -1  0    64   40 nfsrcv D    p4    0:00.00 df 
    0  4050  4020   0  -1  0   204  136 nfsrcv D    p4    0:00.00 ls /nfs/s3/space 
    0  4045  4044   0  18  0   608 1100 pause  Ss   p5    0:00.08 -staff (tcsh)
    0  4053  4045   0  28  0   312  220 -      R+   p5    0:00.00 ps -xl 
    0   188     1   0   2  0   100  544 select S    E0-   0:00.25 (ns_host_exe)


the df and the ls are hung in nfsrcv state.


----
sam@epita.fr
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