[VServer]: Question about iunlink attributes

From: Eric Deschenes <eric.deschenes_at_cisco.com>
Date: Wed 27 Jun 2007 - 22:45:56 BST
Message-ID: <4682DA94.4030603@cisco.com>

Hi VServer Experts,

    I have a question about iunlink attributes.

    Problem description:
    -----------------------
    The issue I'm facing right now is that setting attributes using
"setattr --iunlink <link>" does not survive a unmount/mount operation.

    I'd like to know if the attributes IU are stored in the file system
or in the memory somehow.

    Setup:
    ------
    I use vserver version 2.0.1 with vserver-util 0.30.210 - I'm limited
to this patch by my project's kernel version :(
    I use reiserfs.

    More background info:
    ----------------------
    I use the pre-COW links vserver image and vserver-utils. I'm using
setattr to actually restrict some files from the vserver instances to
prevent application in the vserver to modify those files (link targets).
    What I'm currently seeing is that when I use "setattr -iunlink
<link> on a link (inside the vserver), I can see it take effect with
showattr (so good so far), but those attribute go away when I unmount
the partition and remount it. (I tried without rebooting and I'm sure
this is the cause of the attribute lost)

    I assumed that the setattr flags for iunlink (UI) where set in the
file system and were non-volatile (survive a unmount/mount operation).

    Is this the expected behavior?
    Is there a workaround or documentation that could help me out with this?

Thanx for your time.

/Éric
_______________________________________________
Vserver mailing list
Vserver@list.linux-vserver.org
http://list.linux-vserver.org/mailman/listinfo/vserver
Received on Thu Jun 28 00:00:40 2007

[Next/Previous Months] [Main vserver Project Homepage] [Howto Subscribe/Unsubscribe] [Paul Sladen's vserver stuff]
Generated on Thu 28 Jun 2007 - 00:01:24 BST by hypermail 2.1.8