Re: f2fs space usage

[Chris Ruehl <chris.ruehl@gtsys.com.hk>]

On Friday, January 24, 2014 10:12 AM, Jaegeuk Kim wrote:
> 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,

Yes its made the trick!
/dev/mtdblock4  119M   53M   52M  51% /mnt


Thanks a lot for your advice.
Chris
>> 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


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