* Light | 2013-10-26 12:35:54 [+0800]: > I am trying to build a RT kernel, however it cannot boot because it >cannot mount /home, which is a subvolume of btrfs. This is the entry >of it in /etc/fstab: > >/dev/sda3 /home btrfs >subvol=gentoohome,defaults,compress=lzo,autodefrag 0 2 And this is okay it seems :) >I copyed my .config from a working mainline 3.10 kernel(which is able >to boot) and used "make oldconfig". The resulting config file is >almost the same with mainline one: I only changed IO scheduler from >BFQ(from gentoo patchset) to deadline, without even enabling >CONFIG_PREEMPT_RT. However the RT kernel just cannot boot. That is interresting. Does vanila v3.10.4 / v3.10.6 work? In your bootlog I see | Oct 26 11:33:19 Light kernel: 1;39mKernel command line: root=/dev/sda3 rootflags=subvol=gentoo init=/usr/lib/systemd/systemd ro | Oct 26 11:33:19 Light kernel: sda: sda1 sda2 sda3 sda4 | Oct 26 11:33:19 Light kernel: VFS: Mounted root (btrfs filesystem) readonly on device 0:12. which means the disk there and btrfs was able to mount the root subvolume. However your home subvolume timed out. If there is nothing different with the way you create the kernel (initramfs and such) then I have no clue. Maybe you could remove /home from fstab and mount it from commandline because this might show you the error here. Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
