Re: bug report: attributes ( chattr +a ) not respected by reiserfs 3,6, but this isn't listed in man mkreiserfs

[Oleg Drokin <green@namesys.com>]

Hello!

   I suggest you to mount with -o attrs (not remount) also look in the kernel logs for any problems,
   there is a requirement that before you have attrs code working, you need to have special flag in
   superblock set (which you can set with reiserfsck --clean-attributes)

Bye,
    Oleg
On Tue, Jul 15, 2003 at 03:10:55PM -0400, D.A.M. Revok wrote:

> I was absolutely stunned that reiserfs would throw-away attributes
> /by default/ but possibly it could know them?
> So, I tried
> su
> 	mount -o remount,attrs /mnt/md1
> exit
> echo "this and that" > test
> su
> 	chattr +a test
> 	lsattr test		# *same as before*, it lists the attribute
> exit
> cp /dev/null test
> ls -l test			# answer is size==0
> 
> So now ( now that I found your e-mail in all these damn spams! )
> I know that it doesn't respect attributes normally, or with the
> mount -o attrs
> option.
> 
> It /shows/ that it respects attributes, but they don't /change anything/
> and that is a problem.
> 
> Append-only logs work in ext3, but not with reiserfs.
> 
> On 2003-Jul-13, Sun 9h10, you wrote:
> >Hello!
> >
> >On Sat, Jul 12, 2003 at 10:10:07AM -0400, D.A.M. Revok wrote:
> >> Please declare this in man .*reiser.*
> >> ( and also in the --help listings for 'em ), since it is kind of
> >> important to know *when* one is setting-up a filesystem
> >> ( rather than after the system's been built... )
> >> so that no others will try setting
> >> chattr +a logfile
> >> to make it append-only, as part of system-security, because the
> >> attribute set is non-meaningful.  ext3 respects this attribute.
> >> This on SuSE 8.1 Pro and 8.2 Pro's kernel, maybe the stock kernel has
> >> it working, but I figure it'd be better to tell you people and let
> >> youse sort-it-out.
> >
> >How do you tell it is not meaningful? Hve you tried to
> >mount with -o attrs mount option?
> >
> >Bye,
> >    Oleg
> 
> -- 
> http://www.drawright.com/
>  - "The New Drawing on the Right Side of the Brain" ( Betty Edwards, 
> check "Theory", "Gallery", and "Exercises" )
> http://www.ldonline.org/ld_indepth/iep/seven_habits.html
>  - "The 7 Habits of Highly Effective People" ( this site is same 
> principles as Covey's book )
> http://www.eiconsortium.org/research/ei_theory_performance.htm
>  - "Working With Emotional Intelligence" ( Goleman: this link is 
> /revised/ theory, "Working. . . " is practical )
> http://www.leadershipnow.com/leadershop/1978-5.html
>  - Corps Business: The 30 /Management Principles/ of the U.S. Marines ( 
> David Freedman )