On Mon, Oct 27, 2014 at 10:34 AM, Christian Kujau <li...@nerdbynature.de> wrote: > (somehow this message did not make it to the list) > > Hi, > > After upgrading from linux 3.17.0 to 3.18.0-rc2, I cannot mount my btrfs > partition any more. It's just one btrfs partition, no raid, no > compression, no fancy mount options: > > # mount -t btrfs -o ro /dev/sda6 /usr/local/ > mount: wrong fs type, bad option, bad superblock on /dev/sda6, > [...] > BTRFS: suspicious number of devices: 72057594037927936 > BTRFS: super offset mismatch 1099511627776 != 65536 > BTRFS: superblock contains fatal errors > BTRFS: open_ctree failed > > The only thing fancy may be the machine: PowerBook G4 (powerpc 32 bit), > running Debian/Linux (stable). > > The message comes from the newly added fs/btrfs/disk-io.c: > > if (sb->num_devices > (1UL << 31)) > printk(KERN_WARNING "BTRFS: suspicious number of devices: %llu\n", > sb->num_devices); > > And 72057594037927936 is 2^56, so maybe there's an endianess problem here?
Sounds like you need to revert this patch: https://patchwork.kernel.org/patch/5004701/ (which ignored endianess) or go back to an older kernel (don't use 3.17 or 3.17.1 however, due to other serious issues, latest 3.16.x should be safe). There's a v2 of that patch that fixes the endianess issue, but it didn't make it to 3.18-rc1/2 (https://patchwork.kernel.org/patch/5082701/) regards > > Some details below, please let me know what other details may be needed. > Going back to 3.17 now... > > Thanks, > Christian. > > # file -Ls /dev/sda6 > /dev/sda6: sticky BTRFS Filesystem sectorsize 4096, nodesize 4096, > leafsize 4096) > > # btrfsck /dev/sda6 > checking extents > checking fs roots > checking root refs > found 2035929088 bytes used err is 0 > total csum bytes: 1886920 > total tree bytes: 102936576 > total fs tree bytes: 94441472 > btree space waste bytes: 30875964 > file data blocks allocated: 1932992512 > referenced 1932849152 > Btrfs Btrfs v0.19 > # echo $? > 0 > > > -- > BOFH excuse #427: > > network down, IP packets delivered via UPS > -- > 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 -- Filipe David Manana, "Reasonable men adapt themselves to the world. Unreasonable men adapt the world to themselves. That's why all progress depends on unreasonable men." -- 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
