On Sun, Apr 8, 2012 at 2:21 PM, Canek Peláez Valdés <can...@gmail.com> wrote: > On Sun, Apr 8, 2012 at 11:44 AM, <meino.cra...@gmx.de> wrote: >> Mick <michaelkintz...@gmail.com> [12-04-08 18:40]: >>> On Sunday 08 Apr 2012 16:56:23 David W Noon wrote: >>> > On Sun, 8 Apr 2012 17:26:03 +0200, meino.cra...@gmx.de wrote about >>> > >>> > [gentoo-user] Extended file attributes: ext4: >>> > > is it possible to go from an ext4-filesystem with no extended file >>> > > attributes to one with extended file attributes without reformatting >>> > > the disk or other very risky low level things just by adding this >>> > > feature to the kenrel (?) ? >>> > >>> > Yes, it's simple. >>> > >>> > You need to ensure that your kernel configuration has the extended >>> > attribute support (ACL is a good idea too) and you have booted with the >>> > ext4 driver so configured. >>> > >>> > You then add the xattr option in /etc/fstab for the filesystem(s) where >>> > you want extended attribute support. If you do that before you reboot >>> > (as above) then you will have full extended attribute support. >>> >>> I thought that you are meant to pass such options on the CLI at the time you >>> are formatting the partition ... is this incorrect? >>> >>> Of course if you must format the drive with such options then the data won't >>> survive. >>> -- >>> Regards, >>> Mick >> >> >> Hi, >> >> thank you very much for all the input. >> >> To clearify things a little: >> >> Status quo: System with ext4 and no extended attributes. >> Where I want to be: The same system with extended attributes. >> >> Way to go: No reformatting and mkfs and all that things. Only kernel >> reconfiguring / recompiling / rebooting and emerging some tools. >> >> Possible? > > As others had said, this is possible. I used this guide: > > http://www.debian-administration.org/articles/643 > > You need basically to enable the ext4-only features: > > tune2fs -O extents,uninit_bg,dir_index <partition>
Um, why? Ext3 had extended attribute support, and ISTR the ext4 code being able to handle ext3 filesystems. -- :wq
