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/etc/mnttab is zero length - I have done a silly thing
Post 302149104 by Smiling Dragon on Tuesday 4th of December 2007 10:42:02 PM
12-04-2007
/etc/mnttab is zero length - I have done a silly thing
Being the clever-clogs that I am, I have managed to clobber the contents of /etc/mnttab.
It started when I tried to unmount all the volumes in a prticular veritas disk group and neglected to include a suitable grep in my command line, thus attempting to unmount _all_ the filesystems on the server (for loop).
They all came back with a fs busy message so I was presuming no harm done. However, a df to check all was in order came back with no results, likewise running mount.
When I went to look in the mnttab itself I find it's zero length !?!
Everything appears ok in that the filesystems are still actually mounted and read/write.
If I try a mount or umount I get the message
"mount: Inappropriate ioctl for device"
I suspect a reboot would sort me out but that's a big hammer and I'd rather get to the bottom of it.
What have I done and how in the world do I fix it?
Running solaris 10 on a T2000, fairly recent patches applied. Bugger all running aside from base OS and SAN kit.
It started when I tried to unmount all the volumes in a prticular veritas disk group and neglected to include a suitable grep in my command line, thus attempting to unmount _all_ the filesystems on the server (for loop).
They all came back with a fs busy message so I was presuming no harm done. However, a df to check all was in order came back with no results, likewise running mount.
When I went to look in the mnttab itself I find it's zero length !?!
Everything appears ok in that the filesystems are still actually mounted and read/write.
If I try a mount or umount I get the message
"mount: Inappropriate ioctl for device"
I suspect a reboot would sort me out but that's a big hammer and I'd rather get to the bottom of it.
What have I done and how in the world do I fix it?
Running solaris 10 on a T2000, fairly recent patches applied. Bugger all running aside from base OS and SAN kit.
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LEARN ABOUT HPUX
automountd
automountd(1M) automountd(1M) NAME
automountd - autofs mount/unmount daemon SYNOPSIS
name=value] DESCRIPTION
is an RPC server that answers file system mount and unmount requests from the filesystem. It uses local files or name service maps to locate filesystems to be mounted. These maps are described with the command (see automount(1M)). The daemon is automatically invoked if the variable is set to 1 in Options Trace. Expand each RPC call and display it to Verbose. Log status messages to Turn off browsing for all mount points. This option overrides the map option on the local host. Force all mounts to the local host to be NFS mounts instead of the default LOFS mounts. This is necessary for highly available NFS mounts. Assign value to the indicated map substitution variable. These assignments cannot be used to substitute variables in the master map Tracing While is running, the signal can be sent to to turn tracing on. It logs messages in To turn tracing off, send the signal again. RETURN VALUE
returns: 0 successful 1 failure EXAMPLES
To turn on tracing, enter: or No messages are displayed by the trace. Check the results in WARNINGS
Any filesystems that are being managed by should never be manually mounted or unmounted. Even if the mount or unmount operation appears to complete successfully, the resulting change of state to the managed filesystem can lead to disruptive or unpredictable results, including but not limited to: commands hanging or not returning expected results, and applications failing due to their dependencies on those mounted filesystems. A reboot may be necessary to resolve these issues. AUTHOR
was developed by Sun Microsystems, Inc. FILES
master map for automounter log file for automountd daemon SEE ALSO
automount(1M). automountd(1M)