[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now


Filesystem Mounting problem with solaris system

Posted on 2005-04-24
Medium Priority
Last Modified: 2013-12-21
  I have two solaris system. I am mounting the filesystem of one system to another. But it works fine for few hours, but after say 2/3 hours is shows dead (when cheked by df -k). I am very new to this system and don't know much about the mounting and other stuffs. Any information will be helpful.


Question by:hello_kets

Expert Comment

ID: 13857798
I assume when you say that you are mounting the filesystems from one to the other, that you are doing this via NFS ??? If you are mounting via NFS there is the option for dismounting the filesystems if it has been inactive for a period of time. Can you clarify exactly what you are doing here? If these file systems are being shared over a SAN or such like, you may have access control issues (if the two hosts are independant and not clusterd).

Author Comment

ID: 13864295
Yes you are right i am using NSF mount. below are the share and mount files from server and client machines. Please can u explain what do u mean by "option for dismounting filesystem". Here i think by default the value is "hard" unless mentioned as "soft". I am able to ping the machine. and it works fine for 1/2 hours.

This is from server machine CM_CASE_S02

#       Place share(1M) commands here for automatic execution
#       on entering init state 3.
#       Issue the command '/etc/init.d/nfs.server start' to run the NFS
#       daemon processes and the share commands, after adding the very
#       first entry to this file.
#       share [-F fstype] [ -o options] [-d "<text>"] <pathname> [resource]
#       .e.g,
#       share  -F nfs  -o rw=engineering  -d "home dirs"  /export/home2
share -F nfs -o rw=pcm0001 /usr1/4pe_wbdm
share -F nfs /usr2

The below is from client man=chine "PCM0001"
#device         device          mount           FS      fsck    mount   mount
#to mount       to fsck         point           type    pass    at boot options
fd      -       /dev/fd fd      -       no      -
/proc   -       /proc   proc    -       no      -
/dev/dsk/c1t1d0s1       -       -       swap    -       no      -
/dev/dsk/c1t1d0s0       /dev/rdsk/c1t1d0s0      /       ufs     1       no-
swap    -       /tmp    tmpfs   -       yes     -
cm_case_s02:/usr1/4pe_wbdm      -       /mnt/4pe_wbdm   nfs     -       yes
LVL 16

Accepted Solution

Hanno P.S. earned 250 total points
ID: 13874018
What do you mean by "show dead"? Does the "df -k" command hang when you try
to list the filesystems? Or is your mount simply gone? Can you unmount the filesys
when its "dead"?

NFS filesystems can be mounted "static" or "automatic" (using the automounter).

What you are using via vfstab is a static mount. If you'd mount automatically via
automounted, the filesystem will get unmounted after some minutes whe it has
not been accessed.
I suspect that there gets something else mounted at /mnt (usually, mnt is empty
to allow manual mounts (on the fly) of any kind of filesystems. You should use a
different directory to get your stuff mounted.

To try the aoutomouter:
# ln -s /net/cm_cas_s02/usr1/4pe_wbdm /usr/4pe_wbdm
# df -k      (the remote fs should not be mounted now)
# ls /usr/4pe_wbdm
# df -k      (now, you should see that it's mounted)
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.


Author Comment

ID: 13884617
  In my case i have used vfstab file. So is it means i have static mount? So static and automatic mount should not be an issue. But is there any specific reason for not using "/mnt". The mounted system is used for data storage. Will large data trafic affect the mount?
LVL 16

Expert Comment

by:Hanno P.S.
ID: 13884964
It's just common sense not to use /mnt for "real" mounts that stay for longer. Technically, it's not an issue.

Once mounted, a fs should stay there forever (means: until you explicitly unmount it or shut down your system)

Again: What exactly do you mean by "show dead" when issuing "df -k"?

LVL 10

Expert Comment

ID: 13888558
you may want to put the mount-options "soft,bg" into your vfstab.

Even though technically seen a softmount would be less stable than a hardmount, it could help in your case, as after a timeout statd and lockd could try to remount it.

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Installing FreeBSD… FreeBSD is a darling of an operating system. The stability and usability make it a clear choice for servers and desktops (for the cunning). Savvy?  The Ports collection makes available every popular FOSS application and packag…
Why Shell Scripting? Shell scripting is a powerful method of accessing UNIX systems and it is very flexible. Shell scripts are required when we want to execute a sequence of commands in Unix flavored operating systems. “Shell” is the command line i…
Learn how to find files with the shell using the find and locate commands. Use locate to find a needle in a haystack.: With locate, check if the file still exists.: Use find to get the actual location of the file.:
Learn how to navigate the file tree with the shell. Use pwd to print the current working directory: Use ls to list a directory's contents: Use cd to change to a new directory: Use wildcards instead of typing out long directory names: Use ../ to move…
Suggested Courses

872 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question