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btrfs-progs: cleanup and deprecate btrfs-zero-log 

Sync with the 'rescue zero-log' code, add a warning about deprecation.

Signed-off-by: David Sterba <dsterba@suse.cz>
master
David Sterba 2015-06-05 18:02:08 +02:00
parent 567d7569d8
commit 47de682c0e
1 changed files with 19 additions and 17 deletions
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36
btrfs-zero-log.c
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@ -16,24 +16,18 @@
* Boston, MA 021110-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/stat.h>
#include "kerncompat.h"
#include <stdio.h>
#include <unistd.h>
#include "ctree.h"
#include "disk-io.h"
#include "print-tree.h"
#include "transaction.h"
#include "list.h"
#include "utils.h"
static void print_usage(void) __attribute__((noreturn));
static void print_usage(void)
__attribute__((noreturn)) static void print_usage(void)
{
fprintf(stderr, "usage: btrfs-zero-log dev\n");
fprintf(stderr, "%s\n", PACKAGE_STRING);
exit(1);
}
@ -41,6 +35,7 @@ int main(int ac, char **av)
{
struct btrfs_root *root;
struct btrfs_trans_handle *trans;
struct btrfs_super_block *sb;
int ret;
set_argv0(av);
@ -49,26 +44,33 @@ int main(int ac, char **av)
radix_tree_init();
if((ret = check_mounted(av[1])) < 0) {
fprintf(stderr, "Could not check mount status: %s\n", strerror(-ret));
printf("WARNING: this utility is deprecated, please use 'btrfs rescue zero-log'\n\n");
if ((ret = check_mounted(av[1])) < 0) {
fprintf(stderr, "ERROR: could not check mount status: %s\n", strerror(-ret));
goto out;
} else if(ret) {
fprintf(stderr, "%s is currently mounted. Aborting.\n", av[1]);
} else if (ret) {
fprintf(stderr, "ERROR: %s is currently mounted\n", av[1]);
ret = -EBUSY;
goto out;
}
root = open_ctree(av[1], 0, OPEN_CTREE_WRITES | OPEN_CTREE_PARTIAL);
if (root == NULL)
if (!root) {
fprintf(stderr, "ERROR: cannot open ctree\n");
return 1;
}
sb = root->fs_info->super_copy;
printf("Clearing log on %s, previous log_root %llu, level %u\n",
av[1],
(unsigned long long)btrfs_super_log_root(sb),
(unsigned)btrfs_super_log_root_level(sb));
trans = btrfs_start_transaction(root, 1);
btrfs_set_super_log_root(root->fs_info->super_copy, 0);
btrfs_set_super_log_root_level(root->fs_info->super_copy, 0);
btrfs_commit_transaction(trans, root);
close_ctree(root);
printf("Log root zero'ed\n");
out:
return !!ret;
}