Hi, I tried using the btrfs-convert utility to convert the ext2 fs to btrfs. After the conversion was over, just to verify the correctness of operation, ran btrfsck on the device. It showed errors 800. I am not sure what does it mean, so thought of repoting it on mailing list.
# btrfsck /dev/sdb root 256 inode 257 errors 800 found 1105965056 bytes used err is 1 total csum bytes: 192576 total tree bytes: 459956224 total fs tree bytes: 449585152 btree space waste bytes: 191448023 file data blocks allocated: 843206656 referenced 843206656 Btrfs v0.19-3-g6f3cf25-dirty I also found that, after the conversion of FS from ext2 to btrfs %usage gone up drastically. I mean before the conversion ext2 FS was 22% full but then converted btrfs is 64% used. Steps Followed =========== 1. Created an ext2 filesystem of size 2G 2. Created about 178 files of size 1M in a directory. FS was 11% full after the operation. 3. In another directory create near about 1 Lac files of very small size (2K). I kept on creating files till the number of available inodes were exhausted. # fsck /dev/sdb fsck 1.41.3 (12-Oct-2008) e2fsck 1.41.3 (12-Oct-2008) /dev/sdb: clean, 131072/131072 files, 188721/524288 blocks At this point df -kh output showed that FS as 22% full 4. Tried to convert the ext2 FS to btrfs using btrfs-convert utility # btrfs-convert /dev/sdb creating btrfs metadata. creating ext2fs image file. cleaning up system chunk. conversion complete. 5. Ran btrfsck. 6. Mounted the file system # df -kh Filesystem Size Used Avail Use% Mounted on .... .... tmpfs 251M 104K 251M 1% /dev/shm /dev/sdb 2.0G 1.3G 740M 64% /mnt/fs As you can see df displays FS is 64% full, when infact before conversion it was onlly 22% full. Why is so much increase in percentage usage? -- 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
