Hi David and all,
Recently I'm reworking the btrfs-convert chunk allocater to make it able
to separate data and meta chunk.
But when I was testing, I found that, your devel branch, with the
following commit just fails to convert an empty ext4 filesystem:
commit 0002085c53a5ac9ad1c538bfc3e39c80891c4a1a
Author: Zhao Lei <zhao...@cn.fujitsu.com>
Date: Mon Oct 12 21:23:04 2015 +0800
btrfs-progs: fragments: use btrfs_open_dir for btrfs-fragments command
We can use btrfs_open_dir() to check whether target dir is
in btrfs's mount point before open, instead of checking it in
deeper code, and return fuzzy error message.
Before patch:
./btrfs-fragments -o 123 /mnt/tmp1
ERROR: can't perform the search
After patch:
# ./btrfs-fragments -o 123 /mnt/tmp1
ERROR: not a btrfs filesystem: /mnt/tmp1
Signed-off-by: Zhao Lei <zhao...@cn.fujitsu.com>
Signed-off-by: David Sterba <dste...@suse.com>
The error output is:
create btrfs filesystem:
blocksize: 4096
nodesize: 16384
features: extref, skinny-metadata (default)
volumes.c:1846: btrfs_read_sys_array: Assertion failed.
./btrfs-convert(btrfs_read_sys_array+0x1b8)[0x42422c]
./btrfs-convert(btrfs_setup_chunk_tree_and_device_map+0x41)[0x41176b]
./btrfs-convert[0x411a22]
./btrfs-convert(open_ctree_fd+0x10)[0x411b59]
./btrfs-convert(main+0x1814)[0x4382d7]
/usr/lib/libc.so.6(__libc_start_main+0xf0)[0x7f5571479610]
./btrfs-convert(_start+0x29)[0x407979]
Any ideas?
I hope it won't block me too long to test my rework.
Thanks,
Qu
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