$ cd btrfs-progs $ git branch * dangerdonteveruse master $ dd if=/dev/zero of=../btrfsvol bs=1 count=0 seek=10G 0+0 records in 0+0 records out 0 bytes (0 B) copied, 1.7086e-05 s, 0.0 kB/s $ du -h --apparent-size ../btrfsvol 10G ../btrfsvol $ losetup /dev/loop1 ../btrfsvol $ ./mkfs.btrfs /dev/loop1 WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL WARNING! - see http://btrfs.wiki.kernel.org before using fs created label (null) on /dev/loop1 nodesize 4096 leafsize 4096 sectorsize 4096 size 10.00GB Btrfs Btrfs v0.19 $ ./btrfsck /dev/loop1 checking extents checking fs roots checking root refs found 28672 bytes used err is 0 total csum bytes: 0 total tree bytes: 28672 total fs tree bytes: 8192 btree space waste bytes: 23875 file data blocks allocated: 0 referenced 0 Btrfs Btrfs v0.19 $ mount /dev/loop1 /mnt $ cp -r ../btrfs-progs /mnt $ btrfs fi sync /mnt FSSync '/mnt' $ umount /mnt $ ./btrfsck /dev/loop1 checking extents checking fs roots checking root refs found 14983168 bytes used err is 0 total csum bytes: 14112 total tree bytes: 401408 total fs tree bytes: 339968 btree space waste bytes: 104131 file data blocks allocated: 14581760 referenced 14581760 Btrfs Btrfs v0.19 $ mount -o autodefrag,inode_cache /dev/loop1 /mnt $ rm -rf /mnt/* zsh: sure you want to delete all the files in /mnt [yn]? y $ cp -r ../btrfs-progs /mnt $ btrfs fi sync /mnt FSSync '/mnt' $ umount /mnt $ ./btrfsck /dev/loop1 checking extents checking fs roots root 5 inode 18446744073709551604 errors 2000 root 5 inode 18446744073709551605 errors 1 found 15060992 bytes used err is 1 total csum bytes: 14148 total tree bytes: 442368 total fs tree bytes: 372736 btree space waste bytes: 142523 file data blocks allocated: 14618624 referenced 14618624 Btrfs Btrfs v0.19 If it means anything, the loop file is located on a btrfs volume as well. This error keeps showing up when copying files to a mounted loop dev with -o autodefrag,inode_cache Also, this is on Chris's for-linus branch Ahh I just tested one last time before committing to send the email. The problem only shows up when using inode_cache -- 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
