Hi,

I am testing IBR-DTN features and I would like to transmit big amount of data between wireless nodes. The devices that I use are TP-LINK 3040 v:2.x , flushed with OpenWRT and IBR-DTN 0.13.0-335. Due to insufficient memory space, I have performed an extroot, using a USB storage(32GB).

root@OpenWrt:~# df

Filesystem 1K-blocks Used Available Use% Mounted on

rootfs 30642708 9891116 19188328 34% /

/dev/root 2048 2048 0 100% /rom

tmpfs 14452 528 13924 4% /tmp

/dev/sda1 30642708 9891116 19188328 34% /overlay

overlayfs:/overlay 30642708 9891116 19188328 34% /

tmpfs 512 0 512 0% /dev

I have formatted my USB storage in ext3 format (mkfs.ext3 /dev/sda1)

I have changed the configuration file in both sender and receiver, so the bundles and the blobs path to be under /overlay.

config daemon 'main'

option uri 'dtn://host12'

option logfile '/overlay/TMP/ibrdtn.log'

option errfile '/overlay/TMP/ibrdtn.err'

option fragmentation 'yes'

option scheduling 'yes'

option routing 'epidemic'

config daemon 'safemode'

option forwarding 'no'

option storage '64M'

option maxblock '16M'

config daemon 'storage'

option engine 'simple'

option blobs '/overlay/TMP/blobs'

option bundles '/overlay/TMP/bundles'

I am trying to send a 100MB file, between two nodes. I have synchronized the clocks of the two nodes and:

@Sender:

1) tar -cf file.tar file

2) dtnsend dtn://hostX/inboxReceiver file.tar

I can see the bundle of 100M created @ sender

@Receiver:

3)dtninbox -w /overlay/inboxFolder /overlay/Folder

I can see the entire bundle received correctly under /overlay/TMP/bundles, but when I run the above command, after some time a message "Killed" is appeared. As a result, part of the whole bundle is received (around 10-11 MB), while under /overlay/inboxFolder I can see a blob with the entire size of 100MB.

I would be grateful if you had any hint about this behavior and how I can fix it.

Thanks in advance,

Theodoros