2014-05-26 7:19 GMT+03:00 Dave Chinner <david@xxxxxxxxxxxxx>: > On Mon, May 26, 2014 at 11:19:04AM +1000, Dave Chinner wrote: >> On Mon, May 26, 2014 at 10:08:13AM +1000, Dave Chinner wrote: >> > On Sun, May 25, 2014 at 01:04:09PM -0700, Linus Torvalds wrote: >> > > On Mon, May 5, 2014 at 11:34 AM, Plamen Petrov <plamen.sisi@xxxxxxxxx> wrote: >> > > > >> > > > The story short: on systems with btrfs root I have a kernel .config with ext4, >> > > > xfs and btrfs built-in which works fine with 3.13.x, but 3.14.x panics. After >> > > > inserting some debug printks, I got this info from mount_block_root: >> > > > >> > > > ---> EACCESS=13, EINVAL=22, Available filesystems: ext3 ext2 ext4 fuseblk xfs btrfs >> > > > -----> Tried ext3, error code is -22. >> > > > -----> Tried ext2, error code is -22. >> > > > -----> Tried ext4, error code is -22. >> > > > -----> Tried fuseblk, error code is -22. >> > > > -----> Tried xfs, error code is -38. >> > > > VFS: Cannot open root device "sda2" or unknown-block(8,2): error -38 >> > > > Please append a correct "root=" boot option; here are the available partitions: >> >> BTW, This is the original thread with lots of triage in it: >> >> http://www.spinics.net/lists/linux-btrfs/msg33455.html >> >> But that doesn't reach any conclusion. I suspect that the >> change of btrfs init (from very early (@~1.8s into the boot) until a >> few milliseconds before the root mount is changing the order in >> which the filesystem type list is traversed by the mount, resulting >> in XFS being used to probe the device before btrfs. > > On that point, on 3.15-rc6: > > $ tail -1 /proc/filesystems > btrfs > $ > >> Why XFS is seeing /dev/sda2 as containing an XFS filesystem is not >> yet clear, but perhaps once you've dumped the the first sector of >> the btrfs partition all will become clear.... > > No need, I found the regression. Plamen, can you please try the > patch below? > Yes, Dave. I applied your patch on top of linux 3.15-rc5. I tried the patch you sent in a VM I used for tests. With only your patch applied - the system boots up normally. Thanks for the different perspectives, guys! Always a pleasure communicating with you. After a month or so waiting - definetly worth it! Thanks a lot! -- Plamen Petrov _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
