[libvirt-users] [libvirt] Libvirtd running as root tries to access oneadmin (OpenNebula) NFS mount but throws: error: can’t canonicalize path

[Martin Kletzander]

On Tue, Apr 12, 2016 at 03:55:45PM -0400, TomK wrote:
>On 4/12/2016 3:40 PM, Martin Kletzander wrote:
>> [ I would be way easier to reply if you didn't top-post ]
>>
>> On Tue, Apr 12, 2016 at 12:07:50PM -0400, TomK wrote:
>>> On 4/12/2016 11:45 AM, John Ferlan wrote:
>>>> What got my attention was the error message "initializing FS storage
>>>> file" with the "file:" prefix to the name and 9869:9869 as the uid:gid
>>>> trying to access the file (I assume that's oneadmin:oneadmin on your
>>>> system).
>>>>
>>
>> I totally missed this.  So the only thing that popped on my mind now was
>> checking the whole path:
>>
>>  ls -ld /var{,/lib{,/one{,/datastores{,/0{,/38{,/disk.1}}}}}}
>>
>> You can also run it as root and oneadmin, however after reading through
>> all the info again, I don't think that'll help.
>>
>I top post by default in thunderbird and we have same setup at work with
>M$ LookOut.  Old habits are to blame I guess.  I'll try to reply  like
>this instead.  But yeah it's terrible for mailing lists to top post.
>Here's the output and thanks again:
>
>[oneadmin at mdskvm-p01 ~]$ ls -ld
>/var{,/lib{,/one{,/datastores{,/0{,/38{,/disk.1}}}}}}
>drwxr-xr-x. 21 root     root       4096 Apr 11 07:10 /var
>drwxr-xr-x. 45 root     root       4096 Apr 12 07:58 /var/lib
>drwxr-x---  12 oneadmin oneadmin   4096 Apr 12 15:50 /var/lib/one

Look ^^, maybe for a quick workaround you could try doing:

  chmod o+rx /var/lib/one

Let me know if that does the trick (at least for now).

>drwxrwxr-x   6 oneadmin oneadmin     46 Mar 31 02:44 /var/lib/one/datastores
>drwxrwxr-x   6 oneadmin oneadmin     42 Apr  5 00:20
>/var/lib/one/datastores/0
>drwxrwxr-x   2 oneadmin oneadmin     68 Apr  5 00:20
>/var/lib/one/datastores/0/38
>-rw-r--r--   1 oneadmin oneadmin 372736 Apr  5 00:20
>/var/lib/one/datastores/0/38/disk.1
>[oneadmin at mdskvm-p01 ~]$
>
>That's the default setting but I think I see what you're getting at that
>permissions get inherited?
>

No, I just think you need eXecute on all parent directories.  That
shouldn't hinder your security and could help.

>Cheers,
>Tom K.
>-------------------------------------------------------------------------------------
>
>
>Living on earth is expensive, but it includes a free trip around the sun.
>
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