On Wed, Aug 16, 2017 at 06:25:54PM -0400, Zirconium Hacker wrote: > Hi, > This is my first time using a mailing list, and I hope I'm doing this right. > > $ uname -a > Linux thinkpad 4.12.6-1-ARCH #1 SMP PREEMPT Sat Aug 12 09:16:22 CEST > 2017 x86_64 GNU/Linux > $ btrfs --version > btrfs-progs v4.12 > $ sudo mount -o ro,recovery /dev/sda4 /mnt > mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sda4, > missing codepage or helper program, or other error. > $ dmesg | tail > <snip> > [ 1289.087439] BTRFS warning (device sda4): 'recovery' is deprecated, > use 'usebackuproot' instead > [ 1289.087440] BTRFS info (device sda4): trying to use backup root at mount > time > [ 1289.087442] BTRFS info (device sda4): disk space caching is enabled > [ 1289.097757] BTRFS error (device sda4): failed to read chunk tree: -5 > [ 1289.135222] BTRFS error (device sda4): open_ctree failed
Errno 5 is EIO, are there any I/O errors in your logs? -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
