On Mon, 2014-03-10 at 16:25 -0700, Saul Wold wrote: > Hi There > > There seems to be an issue if we try to build a btrfs based FS that is > less than 70M, we get the following assertion failure: > > mkfs.btrfs: extent-tree.c:2682: btrfs_reserve_extent: Assertion `!(ret)' > failed. > > I tried to do a search on this and did not find anything obvious. > > Further, if I do build a 70M image, it will not mount until I get to I > increase the about 100M! > > # mount -o loop -v rootfs.btrfs mnt > mount: wrong fs type, bad option, bad superblock on /dev/loop0, > missing codepage or helper program, or other error > > In some cases useful info is found in syslog - try > dmesg | tail or so. > > I can provide a small rootfs (~4M) example if needed > > Builds and mounts correct: > mkfs.btrfs -b 104857600 -r rootfs rootfs.btrfs > > Builds, but does not mount: > mkfs.btrfs -b 73400320 -r rootfs rootfs.btrfs > > Does not build, gives the above assertion error: > mkfs.btrfs -b 10889216 -r rootfs rootfs.btrfs > > > Thanks > Hi Saul, Sorry, I'm not able to reproduce your problem... Are you running the latest btrfs-progs from david's branch?
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