[arch-releng] [PATCH 1/1] mkfs: limit size of ext4 block group descriptor table

[Christian Hesse]

Gerardo Exequiel Pozzi <vmlinuz386 at gmail.com> on Fri, 2014/08/22 14:39:
> On 08/22/2014 09:59 AM, Christian Hesse wrote:
> > From: Christian Hesse <mail at eworm.de>
> > 
> > The ext4 filesystems are create with a fixed size of 32GB. After mkfs
> > the empty filesystem already has a disk usage of about 4.3MB.
> > Limiting the size of ext4 block group descriptor table reduces this
> > to just 312KB.
> > ---
> >  archiso/mkarchiso | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/archiso/mkarchiso b/archiso/mkarchiso
> > index 2de026e..8c3bfbf 100755
> > --- a/archiso/mkarchiso
> > +++ b/archiso/mkarchiso
> > @@ -205,7 +205,7 @@ _mkairootfs () {
> >      if [[ ${quiet} == "y" ]]; then
> >          _qflag="-q"
> >      fi
> > -    mkfs.ext4 ${_qflag} -O ^has_journal -E lazy_itable_init=0 -m 0 -F
> > "${work_dir}/airootfs.img"
> > +    mkfs.ext4 ${_qflag} -O ^has_journal -E lazy_itable_init=0,resize=33G
> > -m 0 -F "${work_dir}/airootfs.img" tune2fs -c 0 -i 0
> > "${work_dir}/airootfs.img" &> /dev/null _msg_info "Done!"
> >      _mount_airootfs
> > 
> 
> Nice point. But I guess, should be better to disable it at all using
> ^resize_inode (304K, haha ;))

Ah, did not know that. Great! ;)
-- 
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putchar(b-1/(/*               gcc -o sig sig.c && ./sig    */b/42*2-3)*42);}
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