IMFS on ram-disk

[Udit agarwal]

On Jul 24, 2018 7:45 PM, "Gedare Bloom" <gedare at rtems.org> wrote:

On Tue, Jul 24, 2018 at 10:12 AM, Gedare Bloom <gedare at rtems.org> wrote:
> On Tue, Jul 24, 2018 at 4:48 AM, Udit agarwal <dev.madaari at gmail.com>
wrote:
>> Hi all,
>> I've been trying to use IMFS with a ramdisk on BBB. Here's what i did:
>>
>> After creating a ram disk (block size:512, block count:262144), i used
>> mount_and_make_target_path("/dev/rda","/mnt",RTEMS_
FILESYSTEM_TYPE_IMFS,RTEMS_FILESYSTEM_READ_WRITE,NULL)
>>
>> There is no error during bootup, but when allocating a file(in the /mnt
>> directory) of size 10MB(or even of 1MB) it gives a file too large error.
>> I've used similar config for RFS too and that did worked, so probably
>> there's no issue while setting up the RAM disk.
>>
>> I've also tried testsuite/fstests/imfs_support setup, but looks like
similar
>> method doesn't work with ram-disks
>
> What did you get back from mount_and_make_target_path()? Did it
> succeed? I'm pretty sure this method should not be used for imfs, see
> fstests/imfs_support/fs_support.c
>

Oh, I take that back. Sebastian's comment is accurate. You can
probably make your approach work by replacing "/dev/rda" with NULL I
would guess. The IMFS doesn't need a source, since it is backed by the
heap.

Yes, Sebastian's approach worked. I'm able to generate some benchmarking
stats on IMFS too.


>> --
>> Regards,
>> Udit kumar agarwal
>> http://uditagarwal.in/
>>
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>> users at rtems.org
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