Sponsored Content
Operating Systems Linux Red Hat After umount -lf: kernel: nfs: server HOSTNAME not responding, timed out Post 302659395 by Arsene Lupen on Wednesday 20th of June 2012 11:19:58 PM
Old 06-21-2012
After umount -lf: kernel: nfs: server HOSTNAME not responding, timed out

Greetings!

I'm testing a failover solution for NFSv4 on RHEL6 with latest updates.
My script umounts (umount -lf /share) the faulty NFS share if it sees that's hanging on the client (the NFS daemon is down on the NFS server) and it mounts the share from another healthy NFS server.

Sometimes I can see that a process/thread is still in the memory and producing the messages in the $SUBJ - 'kernel: nfs: server SERVER not responding, timed out'
I already have the new healthy NFS share from another server and 'nfsstat -m' shows that this is the only share on the NFS client system.

I've tested the following commands to find the stacked process/thread:
  • lsof -i | egrep 'SERVER|SERVER_IP'
  • lsof +d /share
  • fuser -fvm /share
  • netstat -anop | egrep 'SERVER|SERVER_IP
  • ... and a couples of others with lsof.. but no PID.
Thread? ..the ps command thread related options don't show IP addresses/host names.. But the kernel is continuously logging the error.

Any suggestion is welcome to detect it.

Thank you Arsene
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

NFS SERVER.....not responding

Hi i am using HPUX11.00 and i am facing a starnge problem after some time when i log on a message is coimng NFS server not responding still trying....and it keps on coming there is no other way but to log out..form the server and start once again... there is no file system exported or NFS... (3 Replies)
Discussion started by: Prafulla
3 Replies

2. UNIX for Dummies Questions & Answers

Mounting nfs filesystems with /net/hostname

Ok ive inherited a number of unix boxes who have drives mounted in different ways. Mostly the nfs filesystems are named in vfstab but some mount points for remote servers are not mentioned in vfs tab and are in fact links to /net/hostname/directory Does anyone know how this is setup? (1 Reply)
Discussion started by: MBGPS
1 Replies

3. UNIX for Dummies Questions & Answers

Solaris 9 server not responding

I'm in panic mode. This isn't a production server, however, is very vital to office. Sun V240 with Solaris 9, stopped accepting ftp sessions. When I tried to remote into box, it didn't respond. I have tried rebooting to boot in single user mode, no luck. I can see that it is ON but I can't get it... (3 Replies)
Discussion started by: mkeis1144
3 Replies

4. Solaris

Locate NFS "not responding still trying" application on client

At times I have unknown applications that hang for long periods of time over and over again after a network glitch. These are sometimes nfs4 but usually nfs3 clients and are always solaris10 systems. nfs: NFS server hostname not responding still trying nfs: NFS server hostname ok nfs: NFS... (1 Reply)
Discussion started by: HPAVC
1 Replies

5. UNIX for Dummies Questions & Answers

Simple way to umount NFS mount in linux

Hello... I've mounted a share using standard nomenclature for the NFS mount command with the following command line: mount -t nfs -o rw {IP address1}:/ /mnt_for_70 / {IP address2}(rw) mnt_for_70 is a mount point I created on {IP address2} I'm confuse and want to be sure I use the... (1 Reply)
Discussion started by: blaine.miller
1 Replies

6. UNIX for Advanced & Expert Users

NFS server <servername> not responding still trying

Hi gurus, OS = SunOS 5.8 Not sure whether to post this in the scripting one or to advance and experts. Am posting on both since there is two things that am wanting to achieve. Am currerntly having NFS server errors below. At this stage, I am not sure whether I am having a SAN storage issue... (2 Replies)
Discussion started by: newbie_01
2 Replies

7. UNIX for Dummies Questions & Answers

Make sure kernel was compiled with NFS server support

Hi there, I have a Debian Squeeze server. How can I check if my kernel was compiled with NFS server support? Extra question: if it is not, how do I enable NFS support in my kernel? Thanks for your help. Santiago (3 Replies)
Discussion started by: chebarbudo
3 Replies

8. Solaris

nfs mount: RPC: Rpcbind failure - RPC: Timed out

Fails to mount the server (10.125.224.22) during installation of a software on client, throwing the below error: nfs mount: 10.125.224.22: : RPC: Rpcbind failure - RPC: Timed out nfs mount: retrying: /cdrom This happened after complete shutdown of the lab. The server came up fine but most... (1 Reply)
Discussion started by: frintocf
1 Replies

9. SCO

NFS umount shows the "Device busy (Error 16)"

Hi there After making a backup copy of it sometimes happens that when I want to unmount an NFS indicates the error:umount: /path_mount busy: Device busy (Error 16) if I run lsoff, I can not find the process that is blocking the application. I'm using OpenServer 5.0.2c as one NFS server ... (14 Replies)
Discussion started by: flako
14 Replies

10. UNIX for Beginners Questions & Answers

NFS server xxxxx not responding still trying

Hello, I got the below error on my AIX system when doing a df command NFS server xxx not responding still trying We check and know that the NFS server is not available anymore. So we would like to unmount it, but no help. / > umount /mountpoint/ umount: Could not find anything to... (4 Replies)
Discussion started by: Phat
4 Replies
OD(1)									FSF								     OD(1)

NAME
od - dump files in octal and other formats SYNOPSIS
od [OPTION]... [FILE]... od --traditional [FILE] [[+]OFFSET [[+]LABEL]] DESCRIPTION
Write an unambiguous representation, octal bytes by default, of FILE to standard output. With more than one FILE argument, concatenate them in the listed order to form the input. With no FILE, or when FILE is -, read standard input. All arguments to long options are mandatory for short options. -A, --address-radix=RADIX decide how file offsets are printed -j, --skip-bytes=BYTES skip BYTES input bytes first -N, --read-bytes=BYTES limit dump to BYTES input bytes -s, --strings[=BYTES] output strings of at least BYTES graphic chars -t, --format=TYPE select output format or formats -v, --output-duplicates do not use * to mark line suppression -w, --width[=BYTES] output BYTES bytes per output line --traditional accept arguments in traditional form --help display this help and exit --version output version information and exit Traditional format specifications may be intermixed; they accumulate: -a same as -t a, select named characters -b same as -t oC, select octal bytes -c same as -t c, select ASCII characters or backslash escapes -d same as -t u2, select unsigned decimal shorts -f same as -t fF, select floats -h same as -t x2, select hexadecimal shorts -i same as -t d2, select decimal shorts -l same as -t d4, select decimal longs -o same as -t o2, select octal shorts -x same as -t x2, select hexadecimal shorts For older syntax (second call format), OFFSET means -j OFFSET. LABEL is the pseudo-address at first byte printed, incremented when dump is progressing. For OFFSET and LABEL, a 0x or 0X prefix indicates hexadecimal, suffixes may be . for octal and b for multiply by 512. TYPE is made up of one or more of these specifications: a named character c ASCII character or backslash escape d[SIZE] signed decimal, SIZE bytes per integer f[SIZE] floating point, SIZE bytes per integer o[SIZE] octal, SIZE bytes per integer u[SIZE] unsigned decimal, SIZE bytes per integer x[SIZE] hexadecimal, SIZE bytes per integer SIZE is a number. For TYPE in doux, SIZE may also be C for sizeof(char), S for sizeof(short), I for sizeof(int) or L for sizeof(long). If TYPE is f, SIZE may also be F for sizeof(float), D for sizeof(double) or L for sizeof(long double). RADIX is d for decimal, o for octal, x for hexadecimal or n for none. BYTES is hexadecimal with 0x or 0X prefix, it is multiplied by 512 with b suffix, by 1024 with k and by 1048576 with m. Adding a z suffix to any type adds a display of printable characters to the end of each line of output. --string without a number implies 3. --width without a number implies 32. By default, od uses -A o -t d2 -w 16. AUTHOR
Written by Jim Meyering. REPORTING BUGS
Report bugs to <bug-coreutils@gnu.org>. COPYRIGHT
Copyright (C) 2002 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU- LAR PURPOSE. SEE ALSO
The full documentation for od is maintained as a Texinfo manual. If the info and od programs are properly installed at your site, the com- mand info od should give you access to the complete manual. od (coreutils) 4.5.3 February 2003 OD(1)
All times are GMT -4. The time now is 10:02 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy