Failed files due to Permission denied

Last post 09-12-2018, 8:26 AM by efg. 1 replies.
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  • Failed files due to Permission denied
    Posted: 09-11-2018, 6:14 PM

    Hi,

     

    We are getting a large number of failed files on a Linux NFS monut, which are failing due to Permission denied errors.

    Doing a quick check, the failed files have rw- r-- r-w  permissions, while successful have rw-rw-r-x

    I understood commvault backup runs as root (or with root permissions), so do not know why having a group with read only would cause this, or is there another reason for this error?

     

    Thanks

  • Re: Failed files due to Permission denied
    Posted: 09-12-2018, 8:26 AM
    • efg is not online. Last active: 11-12-2018, 4:59 PM efg
    • Top 10 Contributor
    • Joined on 02-02-2010
    • CommVault Tinton Falls NJ
    • Expert
    • Points 1,567

    How is the NFS directory being mounted?  Is no-root-squash enabled?  If not, root does not have full permissions on files in an NFS mounted share.   The NFS server needs to export the file systems with root-squash or no-root-squash which will either block or permit root from accessing files.

    You can check this by trying to create a file in the NFS mounted path, and then check the ownership of the file.  If root-squash is enabled, then the ownership of the file will probably be "nobody".  Typically root-squash is the default.

    check with the owner of the NFS share and see if it was exported with root-squash or no-root-squash.

    Some links on NFS: 

    https://linux.die.net/man/5/exports

    http://blmrgnn.blogspot.com/2015/06/what-is-use-of-rootsquah-and.html

    Let us know if this helps...


    Ernst F. Graeler
    Product Specialist
    Applications and File Systems
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