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Btrfs-progs: update usage message for cmds-restore 

Mention that a target path argument is mandatory unless
the -l option is supplied. Also mention about the existence
of the -l option, which was previously not announced.

$ btrfs restore -v /dev/sdb3
usage: btrfs restore [options] <device>

    Try to restore files from a damaged filesystem (unmounted)

    -s              get snapshots
    -v              verbose
    -i              ignore errors
    -o              overwrite
    -t              tree location
    -f <offset>     filesystem location
    -u <block>      super mirror
    -d              find dir
$ echo $?
129

After specifying a target path, the command works as expected:

$ btrfs restore -v /dev/sdb3 files2/
Restoring files2/file1
Done searching
$ echo $?
0

V2: Updated command synopsis by suggestion of Anand Jain.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Filipe David Borba Manana 2013-07-10 09:36:34 +01:00 committed by David Sterba
parent a8c9a2087a
commit e1779e6460
1 changed files with 2 additions and 1 deletions
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cmds-restore.c
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@ -974,7 +974,7 @@ static struct option long_options[] = {
}; };
const char * const cmd_restore_usage[] = { const char * const cmd_restore_usage[] = {
"btrfs restore [options] <device>", "btrfs restore [options] <device> <path> | -l <device>",
"Try to restore files from a damaged filesystem (unmounted)", "Try to restore files from a damaged filesystem (unmounted)",
"", "",
"-s get snapshots", "-s get snapshots",
@ -985,6 +985,7 @@ const char * const cmd_restore_usage[] = {
"-f <offset> filesystem location", "-f <offset> filesystem location",
"-u <block> super mirror", "-u <block> super mirror",
"-d find dir", "-d find dir",
"-l list roots",
"--path-regex <regex>", "--path-regex <regex>",
" restore only filenames matching regex,", " restore only filenames matching regex,",
" you have to use following syntax (possibly quoted):", " you have to use following syntax (possibly quoted):",