Related to "NAS" some file system (mounted volumes) were not writable

 
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Operating Systems Linux Red Hat Related to "NAS" some file system (mounted volumes) were not writable
# 1  
Old 11-30-2016
Related to "NAS" some file system (mounted volumes) were not writable

Dear friends,

I have been facing an issue with one of my red hat unix machine, suddenly lost to switch sudo users. My all colleagues lost to switch to access sudo users.

Then, we have realized its related to NAS issue which does not allowing to write the file. because of this we got so many failed alerts because of non writable access.

After reboot the server, everything is as expected, but how i could find the root cause of the issue?

Please help me to find the root cuase of the issue.

Pleas help me here, thanks

Regards,
Chand
# 2  
Old 11-30-2016
What network protocol does the NAS use? Is it NFS? Or something else?

The NAS might default to read-only access without logging-in with user credentials so in that case, if the NAS OS rebooted for some reason, all access would default to read-only. Most NAS implementations require some user/passwd credentials to grant write access.

This event may well just be a one-off and won't (or rarely) happen again.
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