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btrfs: Add noenospc_debug mount option.

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Add noenospc_debug mount option to disable ENOSPC debug with
remount option.

Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Reviewed-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>
This commit is contained in:
Qu Wenruo 2014-01-06 09:58:28 +08:00 committed by Chris Mason
parent e07a2ade44
commit 5303629343
2 changed files with 7 additions and 1 deletions
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3
Documentation/filesystems/btrfs.txt
View File

@ -108,8 +108,9 @@ Options with (*) are default options and will not show in the mount options.
performance impact. (The fstrim command is also available to performance impact. (The fstrim command is also available to
initiate batch trims from userspace). initiate batch trims from userspace).
noenospc_debug(*)
enospc_debug enospc_debug
Debugging option to be more verbose in some ENOSPC conditions. Disable/enable debugging option to be more verbose in some ENOSPC conditions.
fatal_errors=<action> fatal_errors=<action>
Action to take when encountering a fatal error: Action to take when encountering a fatal error:

5
fs/btrfs/super.c
View File

@ -324,6 +324,7 @@ enum {
Opt_check_integrity, Opt_check_integrity_including_extent_data, Opt_check_integrity, Opt_check_integrity_including_extent_data,
Opt_check_integrity_print_mask, Opt_fatal_errors, Opt_rescan_uuid_tree, Opt_check_integrity_print_mask, Opt_fatal_errors, Opt_rescan_uuid_tree,
Opt_commit_interval, Opt_barrier, Opt_nodefrag, Opt_nodiscard, Opt_commit_interval, Opt_barrier, Opt_nodefrag, Opt_nodiscard,
Opt_noenospc_debug,
Opt_err, Opt_err,
}; };
@ -356,6 +357,7 @@ static match_table_t tokens = {
{Opt_clear_cache, "clear_cache"}, {Opt_clear_cache, "clear_cache"},
{Opt_user_subvol_rm_allowed, "user_subvol_rm_allowed"}, {Opt_user_subvol_rm_allowed, "user_subvol_rm_allowed"},
{Opt_enospc_debug, "enospc_debug"}, {Opt_enospc_debug, "enospc_debug"},
{Opt_noenospc_debug, "noenospc_debug"},
{Opt_subvolrootid, "subvolrootid=%d"}, {Opt_subvolrootid, "subvolrootid=%d"},
{Opt_defrag, "autodefrag"}, {Opt_defrag, "autodefrag"},
{Opt_nodefrag, "noautodefrag"}, {Opt_nodefrag, "noautodefrag"},
@ -603,6 +605,9 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
case Opt_enospc_debug: case Opt_enospc_debug:
btrfs_set_opt(info->mount_opt, ENOSPC_DEBUG); btrfs_set_opt(info->mount_opt, ENOSPC_DEBUG);
break; break;
case Opt_noenospc_debug:
btrfs_clear_opt(info->mount_opt, ENOSPC_DEBUG);
break;
case Opt_defrag: case Opt_defrag:
btrfs_info(root->fs_info, "enabling auto defrag"); btrfs_info(root->fs_info, "enabling auto defrag");
btrfs_set_opt(info->mount_opt, AUTO_DEFRAG); btrfs_set_opt(info->mount_opt, AUTO_DEFRAG);