Hello Christian, On Thu, May 28, 2015 at 5:37 PM, Christian Hesse <[email protected]> wrote: > Hello everybody, > > I am experiencing issues on a live system based on Arch Linux [0][1] with > Linux kernel 4.0.x when booted in RAM mode (parameter 'copytoram') [2]. > Probably the problem exists some time longer, I am not sure when this first > happened and what versions are effected. > > The boot sequence looks like this: > > -> boot kernel > -> start initramfs > -> get the squashfs image file (there is no difference with loop mount, > nbd or http) > -> root filesystem is set up with loop devices and device mapper > -> boot continues > > The root filesystem is accessed as follows: > > -> ext4 filesystem > -> device mapper snapshot target > -> /dev/loop1: r/o ext4 image > -> mounted squashfs > -> /dev/loop0: squashfs image > -> /dev/loop2: r/w COW image (sparse file) > > > Assembling the root filesystem stack always succeeds, but sometimes boot hangs > with a lot of:
Could you try the following two patches to see if they can fix your issue? http://git.kernel.org/cgit/linux/kernel/git/axboe/linux-block.git/commit/?h=for-next&id=f4aa4c7bbac6c4afdd4adccf90898c1a3685396d http://git.kernel.org/cgit/linux/kernel/git/axboe/linux-block.git/commit/?h=for-next&id=4d4e41aef9429872ea3b105e83426941f7185ab6 Thanks, Ming > > INFO: task kworker/u#:#:### blocked for more than 120 seconds > > and a single: > > INFO: task kloopd/### blocked for more than 120 seconds > > Any idea what goes wrong? Looks like a race condition or deadlock. > > [0] https://wiki.archlinux.org/index.php/Archiso > [1] https://projects.archlinux.org/archiso.git/ > [2] https://projects.archlinux.org/archiso.git/tree/docs/README.bootparams > -- > main(a){char*c=/* Schoene Gruesse */"B?IJj;MEH" > "CX:;",b;for(a/* Chris get my mail address: */=0;b=c[a++];) > putchar(b-1/(/* gcc -o sig sig.c && ./sig */b/42*2-3)*42);} -- Ming Lei -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
