Hello Chao, I was holding for a while and taking care of other things, but now since I upgraded to kernel v4.13 (in fact I jumped to 4.13.3), I seem to be no longer affected by this problem.
My system has been running fine for over two weeks. I appreciate your help in this matter. Should I experience it once more, I'll ping you again. Thanks! On Wed, Sep 13, 2017 at 11:22 PM, Chao Yu <yuch...@huawei.com> wrote: > Hi Marcelo, > > Please add "f2fs: show flush list status in sysfs" first in your repo. > > And please try: > 1. mount without flush_merge option and do the test to see whether it is > caused > by issue of the feature or lower block layer. > > For disabling the feature: > mount -o noflush_merge > > 2. do test with last codes in dev-test branch. > > If the problem is still there, please dump info with: > echo l > /proc/sysrq-trigger > echo w > /proc/sysrq-trigger > dmesg > cat /sys/kernel/debug/f2fs/status > > Thanks, > > On 2017/9/1 12:54, Marcelo "Marc" Ranolfi wrote: >> Hi, >> >> no problem at all. >> >> No, I never did ro remount before it happened. In fact its been a long >> while since I used ro. >> >> >> Regards >> >> On Thu, Aug 31, 2017 at 8:01 AM, Chao Yu <yuch...@huawei.com> wrote: >>> Hi Marcelo, >>> >>> Sorry for the delay, :( >>> >>> I'd like ask, any possible that we did ro remount before the problem >>> happened? >>> >>> Thanks, >>> >>> On 2017/8/24 1:26, Marcelo "Marc" Ranolfi wrote: >>>> Chao, >>>> >>>> I just had the same problem, with kernel 4.12.8 with patch _f2fs: fix >>>> out-of-order execution in f2fs_issue_flush_. >>>> >>>> On Tue, Aug 22, 2017 at 2:00 PM, Marcelo "Marc" Ranolfi >>>> <marc.2...@gmail.com> wrote: >>>>> Hi Chao >>>>> >>>>> I'm testing the kernel with your patch since last night. Will give new >>>>> feedback a couple of days/weeks about how it goes. >>>>> >>>>> >>>>> Thank you. >>>>> >>>>> >>>>> >>>>> On Mon, Aug 21, 2017 at 11:58 AM, Chao Yu <c...@kernel.org> wrote: >>>>>> Hi Marcelo, >>>>>> >>>>>> Thanks for the report! >>>>>> >>>>>> Would you have a try with below patch? >>>>>> >>>>>> f2fs: fix out-of-order execution in f2fs_issue_flush >>>>>> >>>>>> Thanks, >>>>>> >>>>>> On 2017/8/16 15:24, Marcelo "Marc" Ranolfi wrote: >>>>>>> Just wanted to let you all know that this is still an issue, even with >>>>>>> the 4.12.7 kernel. >>>>>>> >>>>>>> The two most affected applications are qemu-system-x86_64 and totem. >>>>>>> >>>>>>> On Wed, Aug 9, 2017 at 3:04 AM, Marcelo "Marc" Ranolfi >>>>>>> <marc.2...@gmail.com> wrote: >>>>>>>> What follows is a bug report. >>>>>>>> >>>>>>>> I've been experiencing system lockups somewhat randomly. Sometimes an >>>>>>>> application freezes, and when I go check its properties, it says the >>>>>>>> process' Wait Channel is _f2fs_issue_flush_. >>>>>>>> >>>>>>>> Sometimes it's the qemu process (which I use via libvirt), other times >>>>>>>> it's Firefox, or Gnome Videos (totem) and it happened to Nemo once as >>>>>>>> well. I have screenshots if necessary. >>>>>>>> >>>>>>>> I've been tracking this with screenshots, and it's happenning every 4 >>>>>>>> days - on average. >>>>>>>> >>>>>>>> When this happens, the process stays unresponsive no matter what. I >>>>>>>> tried: >>>>>>>> >>>>>>>> - Restarting swap >>>>>>>> - Restarting the Display Manager >>>>>>>> - Graceful shutdown / reboot - takes forever, doesn't work >>>>>>>> - Shutdown -k and unmounting filesystems from command line - root >>>>>>>> can't be unmounted unless -l used, no solution >>>>>>>> >>>>>>>> The only working solution is to reset the machine via power button or >>>>>>>> #reboot -f. >>>>>>>> >>>>>>>> I have: >>>>>>>> >>>>>>>> - Kingston SV300S37A120G - hardware is fine, I have other OS / >>>>>>>> filesystems on it >>>>>>>> - f2fs filesystem in a 40 GB partition, GPT >>>>>>>> - kernel 4.12.4 with systemd 234.11 - typical up-to-date Arch Linux >>>>>>>> setup. >>>>>>>> >>>>>>>> You gentlemen let me know if I provide more help. >>>>>>>> >>>>>>>> Best, >>>>>>>> Marc >>>>>>> >>>>>>> ------------------------------------------------------------------------------ >>>>>>> Check out the vibrant tech community on one of the world's most >>>>>>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >>>>>>> _______________________________________________ >>>>>>> Linux-f2fs-devel mailing list >>>>>>> Linux-f2fs-devel@lists.sourceforge.net >>>>>>> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel >>>>>>> >>>> >>>> ------------------------------------------------------------------------------ >>>> Check out the vibrant tech community on one of the world's most >>>> engaging tech sites, Slashdot.org! http://sdm.link/slashdot >>>> _______________________________________________ >>>> Linux-f2fs-devel mailing list >>>> Linux-f2fs-devel@lists.sourceforge.net >>>> https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel >>>> >>>> >>> >> >> . >> > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel
