Hi, I couldn't get any error when replaying your scenario on my arm board. So, could you send the backtrace of any hanged process?
# cat /proc/[pid]/stack Thanks, 2013-12-20 (금), 12:29 -0800, John Grub: > Hello, > > I can't seem to write larger files on my f2fs mount. > My hardware is an embedded arm platform with an 8GB eMMC nand flash > chip: Golbalscale D2Plug > I have two of these pieces of hardware and I see this issue on both of > them. There is no issue when I use ext4. > I am running kernel version 3.13.0-rc4 > I've compiled f2fs-tools from here > http://git.kernel.org/cgit/linux/kernel/git/jaegeuk/f2fs-tools.git @ > 11d187cdfa2dcf504aa25b5a1aab4228f19f22ff > > > I've followed the installation and usage instructions in > linux/Documentation/filesystems/f2fs.txt to format my 8GB eMMC nand > flash as f2fs. > > > I'm getting freezes when writing larger files to my f2fs partition. > Here is an experiment I've done to show this. > First create 3 test files of different sizes: > # cat /dev/urandom | head -c 50k > /tmp/50k > # cat /dev/urandom | head -c 100k > /tmp/100k > > # cat /dev/urandom | head -c 150k > /tmp/150k > > > > Test case #1: Repeatedly copy the same 50k file to j2fs: > # cp /tmp/50k /mnt/j2fs/ <-- this copy always works fine > # cp /tmp/50k /mnt/j2fs/ <-- this copy always works fine > # cp /tmp/50k /mnt/j2fs/ <-- this copy always hangs forever > For the failing copy, I've seen 4k, 8k and 12k copied correctly before > it stops. > > > Test case #2: Repeatedly copy the same 100k file to f2fs: > # cp /tmp/100k /mnt/f2fs/ <-- this copy works fine > # cp /tmp/100k /mnt/f2fs/ <-- this copy hangs forever > > For the failing copy, I've seen 4k, 8k and 12k copied correctly before > it stops. > > > > Test case #3: Copy a 150k file to f2fs: > # cp /tmp/150k /mnt/f2fs/ > > This never completes and will hang forever if I don't kill it. It > always seems to fail at 120k. > > > > Any help would be appreciated. > > > Thanks, > John Grub > ------------------------------------------------------------------------------ > Rapidly troubleshoot problems before they affect your business. Most IT > organizations don't have a clear picture of how application performance > affects their revenue. With AppDynamics, you get 100% visibility into your > Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! > http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk > _______________________________________________ Linux-f2fs-devel mailing list > Linux-f2fs-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel -- Jaegeuk Kim Samsung ------------------------------------------------------------------------------ Rapidly troubleshoot problems before they affect your business. Most IT organizations don't have a clear picture of how application performance affects their revenue. With AppDynamics, you get 100% visibility into your Java,.NET, & PHP application. Start your 15-day FREE TRIAL of AppDynamics Pro! http://pubads.g.doubleclick.net/gampad/clk?id=84349831&iu=/4140/ostg.clktrk _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
