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btrfs-progs: Fix device scan to interpret its argument properly

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Fix the following bug.

  ================================
  # btrfs device scan -- /dev/sdb
  ERROR: not a block device: --
  ================================

It should work as follow.

  ================================
  # ./btrfs device scan -- /dev/sdb
  Scanning for Btrfs filesystems in '/dev/sdb'
  ================================

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Satoru Takeuchi 2016-03-11 09:26:13 +09:00 committed by David Sterba
parent 3ee935e4dd
commit 1ff2823225
1 changed files with 2 additions and 1 deletions
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3
cmds-device.c
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@ -222,7 +222,7 @@ static const char * const cmd_device_scan_usage[] = {
static int cmd_device_scan(int argc, char **argv)
{
int i;
int devstart = 1;
int devstart;
int all = 0;
int ret = 0;
@ -245,6 +245,7 @@ static int cmd_device_scan(int argc, char **argv)
usage(cmd_device_scan_usage);
}
}
devstart = optind;
if (all && check_argc_max(argc - optind, 1))
usage(cmd_device_scan_usage);