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btrfs: introduce mount option rescue=all

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Now that we have the building blocks for some better recovery options
with corrupted file systems, add a rescue=all option to enable all of
the relevant rescue options.  This will allow distros to simply default
to rescue=all for the "oh dear lord the world's on fire" recovery
without needing to know all the different options that we have and may
add in the future.

Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2020-10-16 11:29:20 -04:00 committed by David Sterba
parent 882dbe0cec
commit 9037d3cbcb
2 changed files with 12 additions and 0 deletions
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11
fs/btrfs/super.c
View File

@ -362,6 +362,7 @@ enum {
Opt_nologreplay,
Opt_ignorebadroots,
Opt_ignoredatacsums,
Opt_rescue_all,
/* Deprecated options */
Opt_recovery,
@ -461,6 +462,7 @@ static const match_table_t rescue_tokens = {
{Opt_ignorebadroots, "ibadroots"},
{Opt_ignoredatacsums, "ignoredatacsums"},
{Opt_ignoredatacsums, "idatacsums"},
{Opt_rescue_all, "all"},
{Opt_err, NULL},
};
@ -512,6 +514,15 @@ static int parse_rescue_options(struct btrfs_fs_info *info, const char *options)
btrfs_set_and_info(info, IGNOREDATACSUMS,
"ignoring data csums");
break;
case Opt_rescue_all:
btrfs_info(info, "enabling all of the rescue options");
btrfs_set_and_info(info, IGNOREDATACSUMS,
"ignoring data csums");
btrfs_set_and_info(info, IGNOREBADROOTS,
"ignoring bad roots");
btrfs_set_and_info(info, NOLOGREPLAY,
"disabling log replay at mount time");
break;
case Opt_err:
btrfs_info(info, "unrecognized rescue option '%s'", p);
ret = -EINVAL;

1
fs/btrfs/sysfs.c
View File

@ -334,6 +334,7 @@ static const char *rescue_opts[] = {
"nologreplay",
"ignorebadroots",
"ignoredatacsums",
"all",
};
static ssize_t supported_rescue_options_show(struct kobject *kobj,