Re: f2fs space usage

[Jaegeuk Kim <jaegeuk.kim@samsung.com>]

Hi,

2014-01-23 (목), 17:32 +0800, Chris Ruehl:
> Hi Kim,
> 
> I recently work with f2fs and wondering about the system usage.
> I have a NAND flash 128MB on my SoC used for uBoot and a root
> partion (f2fs)
> 
> when I install the busybox binaries I nearly run out of space
> busybox binary
> 
> root@gtsir24:/mnt# du -sh /mnt/.
> 4.8M    /mnt/.
> 
> but df -h show a 97% usage

For such the small sized partition, the space is pretty much dependent
on the overprovision ratio.
So, if you want to get more space, you can format the partition with -o
option.

When I tested with 128MB, it seems that 20% is best, which shows 62MB
for avaliable space occupying 45% utilization.

The command is like this:

# mkfs.f2fs -o 20 $dev

Thanks,

> 
> root@gtsir24:/mnt# df -h
> Filesystem      Size  Used Avail Use% Mounted on
> rootfs          3.6G  574M  2.8G  17% /
> /dev/root       3.6G  574M  2.8G  17% /
> devtmpfs        125M     0  125M   0% /dev
> tmpfs            25M  156K   25M   1% /run
> tmpfs           5.0M     0  5.0M   0% /run/lock
> tmpfs            50M     0   50M   0% /run/shm
> /dev/mtdblock4  119M  101M  3.3M  97% /mnt
> 
> I'm running a next-20140115.
> 
> Can you comment please.
> Chris

-- 
Jaegeuk Kim
Samsung



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