Re: ubifs mount size

Artem Bityutskiy
2008-08-25T15:54:46Z

Hi,

On Thu, 2008-08-21 at 20:24 +0300, Artem Bityutskiy wrote:
> > root@tsi-sa2410:~# ubimkvol /dev/ubi1 -N root -s 55MiB
> > Volume ID 0, size 3755 LEBs (57676800 bytes, 55.0 MiB), LEB size 15360
> > bytes (15.0 KiB), dynamic, name "root", alignment 1
> > root@tsi-sa2410:~# mount -t ubifs ubi1:root /mnt/linux2-root/
> > UBIFS: default file-system created
> > UBIFS: background thread "ubifs_bgt1_0" started, PID 930
> > UBIFS: mounted UBI device 1, volume 0, name "root"
> > UBIFS: file system size: 57292800 bytes (55950 KiB, 54 MiB, 3730 LEBs)
> > UBIFS: journal size: 2872320 bytes (2805 KiB, 2 MiB, 187 LEBs)
> > UBIFS: default compressor: LZO
> > UBIFS: media format 4, latest format 4
> > root@tsi-sa2410:~# df
> > Filesystem 1k-blocks Used Available Use% Mounted on
> > rootfs 8059 5284 2366 69% /
> > /dev/root 8059 5284 2366 69% /
> > /dev/root 8059 5284 2366 69% /dev/.static/dev
> > ubi1:root 33968 0 31204 0% /mnt/linux2-root
>
> I've explored this a little. Currently UBIFS indeed reports 15%-20% less
> free space than it actually has, and we'll try to fix this.

We have improved UBIFS free space reporting and it should be much better
now. Please, pull master branch of the ubifs-2.6.git tree to find the
fixes.