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
