on ppc64, 4.7-rc kernel, git btrfs-progs, v4.7.2: # truncate --size=500m testfile # ./mkfs.btrfs testfile # mkdir -p mnt # mount -o loop testfile mnt btrfs-progs v4.7.2 See http://btrfs.wiki.kernel.org for more information. Label: (null) UUID: c531b759-a491-4c9f-a954-4787cea9106d Node size: 65536 Sector size: 65536 Filesystem size: 500.00MiB Block group profiles: Data: single 8.00MiB Metadata: DUP 32.00MiB System: DUP 8.00MiB SSD detected: no Incompat features: extref, skinny-metadata Number of devices: 1 Devices: ID SIZE PATH 1 500.00MiB testfile # dmesg -c [ 61.210287] loop: module loaded [ 61.247105] BTRFS: device fsid a8d79cd0-977f-4b93-8410-246dc08b3683 devid 1 transid 5 /dev/loop0 [ 61.247391] BTRFS info (device loop0): disk space caching is enabled [ 61.247397] BTRFS info (device loop0): has skinny extents [ 61.270492] BTRFS info (device loop0): creating UUID tree [ 61.312149] BTRFS warning (device loop0): failed to create the UUID tree: -28 [ 61.483028] BTRFS: open_ctree failed 2nd mount works: # mount -o loop testfile mnt # dmesg -c [ 87.504564] BTRFS info (device loop0): disk space caching is enabled [ 87.504579] BTRFS info (device loop0): has skinny extents [ 87.506979] BTRFS info (device loop0): creating UUID tree Any ideas? This seems to have regressed since 3.9.1, but there are a couple other mkfs breakages in between, and my bisect was not fruitful. Thanks, -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
