diff options
| author | David Sterba <dsterba@suse.com> | 2015-10-22 10:26:10 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-01-12 15:01:04 +0100 |
| commit | 5a657cad467a601bbef49b0ab79f30cd23a53dfe (patch) | |
| tree | 807f18f10b7cf38c24bbd31e2e04795c4244c9b8 /cmds-balance.c | |
| parent | 40db5cd7ffcbc4b58d6c82e9ddba01f7e26152ca (diff) | |
btrfs-progs: balance: enhance the usage filter with range
We can do more with the balance usage filter. Enhance it so we can
specify also the minimum usage of the block groups to process. The
'usage' filter now accepts a range (a..b, can be partial) and needs
kernel support.
The 'usage=value' filter is equivalent to 'limit=..value' but works on
older kernels as well.
The min/max values are 32bit, unlike the single-value limit which is
64bit.
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'cmds-balance.c')
| -rw-r--r-- | cmds-balance.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/cmds-balance.c b/cmds-balance.c index 2c5d2eb1..e73bfcf8 100644 --- a/cmds-balance.c +++ b/cmds-balance.c @@ -244,11 +244,30 @@ static int parse_filters(char *filters, struct btrfs_balance_args *args) "an argument\n"); return 1; } - if (parse_u64(value, &args->usage) || - args->usage > 100) { - fprintf(stderr, "Invalid usage argument: %s\n", - value); - return 1; + if (parse_u64(value, &args->usage)) { + if (parse_range_u32(value, &args->usage_min, + &args->usage_max)) { + fprintf(stderr, + "Invalid usage argument: %s\n", + value); + return 1; + } + if (args->usage_max > 100) { + fprintf(stderr, + "Invalid usage argument: %s\n", + value); + } + args->flags &= ~BTRFS_BALANCE_ARGS_USAGE; + args->flags |= BTRFS_BALANCE_ARGS_USAGE_RANGE; + } else { + if (args->usage > 100) { + fprintf(stderr, + "Invalid usage argument: %s\n", + value); + return 1; + } + args->flags &= ~BTRFS_BALANCE_ARGS_USAGE_RANGE; + args->flags |= BTRFS_BALANCE_ARGS_USAGE; } args->flags |= BTRFS_BALANCE_ARGS_USAGE; } else if (!strcmp(this_char, "devid")) { |