Enhance the sorting capabilities of 'inspect list-chunks' to allow
multiple keys. Drop the gaps, this works only for pstart and it's hard
to make it work with arbitrary sort keys.
Usage is printed by default, assuming this is an interesting info and
even if it slows down the output (due to extra lookups) it's more
convenient to print it rather than not.
The options related to usage and empty were removed.
Output changes:
- rename Number to PNumber, meaning physical number on the device
- print Devid, device number, can be also sort key
Examples:
btrfs inspect list-chunks /mnt
btrfs inspect list-chunks --sort length,usage
btrfs inspect list-chunks --sort lstart
Depending on the sort key order, the output can be wild, for that the
PNumber and LNumber give some hint where the chunks lie in their space.
Example output:
$ sudo ./btrfs inspect list-chunks --sort length,usage /
Devid PNumber Type/profile PStart Length PEnd LNumber LStart Usage%
----- ------- ----------------- --------- --------- --------- ------- --------- ------
1 7 Data/single 1.52GiB 16.00MiB 1.54GiB 69 191.68GiB 86.04
1 3 System/DUP 117.00MiB 32.00MiB 149.00MiB 40 140.17GiB 0.05
1 2 System/DUP 85.00MiB 32.00MiB 117.00MiB 39 140.17GiB 0.05
1 15 Data/single 8.04GiB 64.00MiB 8.10GiB 61 188.60GiB 94.46
1 1 Data/single 1.00MiB 84.00MiB 85.00MiB 68 191.60GiB 74.24
1 5 Metadata/DUP 341.00MiB 192.00MiB 533.00MiB 60 188.41GiB 82.58
1 4 Metadata/DUP 149.00MiB 192.00MiB 341.00MiB 59 188.41GiB 82.58
1 20 Metadata/DUP 9.29GiB 256.00MiB 9.54GiB 38 139.92GiB 57.76
1 19 Metadata/DUP 9.04GiB 256.00MiB 9.29GiB 37 139.92GiB 57.76
1 22 Metadata/DUP 9.79GiB 256.00MiB 10.04GiB 25 113.15GiB 57.93
1 21 Metadata/DUP 9.54GiB 256.00MiB 9.79GiB 24 113.15GiB 57.93
1 46 Metadata/DUP 29.29GiB 256.00MiB 29.54GiB 43 142.71GiB 62.38
Signed-off-by: David Sterba <dsterba@suse.com>
Add parsing of user defined sorting specification and some helpers.
Example usage:
sortdef = "key1,key2,key3"
do {
id = compare_parse_key_to_id(&comp, sortdef)
if (id < 0) return error;
compare_add_sort_id(&comp, id)
} while(id >= 0);
Signed-off-by: David Sterba <dsterba@suse.com>
Yaroslav Halchenko
David Sterba