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btrfs-progs: Accurate errormsg for resize operation on no-enouth-free-space case 

btrfs progs output following error message when doing resize on
no-enouth-free-space case:
 # btrfs filesystem resize +10g /mnt/btrfs_5gb
 Resize '/mnt/btrfs_5gb' of '+10g'
 ERROR: unable to resize '/mnt/btrfs_5gb' - File too large
 #

It is not a good description for users, and this patch changed it to:
 # ./btrfs filesystem resize +10G /mnt/tmp1
 Resize '/mnt/tmp1' of '+10G'
 ERROR: unable to resize '/mnt/tmp1' - no enouth free space
 #

Reported-by: Taeha Kim <kthguru@gmail.com>
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Zhao Lei 2015-07-22 15:58:06 +08:00 committed by David Sterba
parent ef433bb083
commit e16cb7cb53
1 changed files with 10 additions and 2 deletions
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12
cmds-filesystem.c
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@ -1327,8 +1327,16 @@ static int cmd_filesystem_resize(int argc, char **argv)
e = errno;
close_file_or_dir(fd, dirstream);
if( res < 0 ){
fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
path, strerror(e));
switch (e) {
case EFBIG:
fprintf(stderr, "ERROR: unable to resize '%s' - no enouth free space\n",
path);
break;
default:
fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
path, strerror(e));
break;
}
return 1;
} else if (res > 0) {
const char *err_str = btrfs_err_str(res);