path: root/cmds-filesystem.c
diff options
authorAnand Jain <>2013-10-08 11:41:40 +0800
committerChris Mason <>2013-10-16 08:23:13 -0400
commitdde4b9214162d994f0190e42f53d2e1d6fdcc893 (patch)
tree064eee04ef80861a9f53bd300429c3455b68ca0e /cmds-filesystem.c
parent6c2c30ce03c0beba716b5a054b64c6bf62068cb6 (diff)
btrfs-progs: use BTRFS_SCAN_LBLKID as default scan in filesystem show
btrfs progs has to scan for the btrfs disks for two main reasons, one to register them with the btrfs kernel (under btrfs dev scan) 2nd to report btrfs disks to the user (under btrfs fi show) (there few more minor reasons like check_mounted etc..). To facilitate the scan, in total we have the following methods to scan for the btrfs BTRFS_SCAN_PROC which uses the /proc/partitions to look for the disks, when scanning it does it twice first would look for non dm- paths and in the 2nd scan it would pick only dm- paths. BTRFS_SCAN_DEV which scans all the block dev under /dev as they appear during scanning. BTRFS_SCAN_LBLKID this uses the library functions provided by the lblkid to get only disks which contains the btrfs SB. The better method to use would be BTRFS_SCAN_LBLKID for the obvious reasons we don't have to reinvent that feature with in btrfs-progs. For the btrfs fi show - This patch will.. - make BTRFS_SCAN_LBLKID as the default scan option (BTRFS_SCAN_DEV is accessible under the option --all-devices and BTRFS_SCAN_PROC won't be used by btrfs fi show any more) Signed-off-by: Anand Jain <> Signed-off-by: David Sterba <> Signed-off-by: Chris Mason <>
Diffstat (limited to 'cmds-filesystem.c')
1 files changed, 1 insertions, 13 deletions
diff --git a/cmds-filesystem.c b/cmds-filesystem.c
index 9e0c8b9e..0bfd7103 100644
--- a/cmds-filesystem.c
+++ b/cmds-filesystem.c
@@ -387,11 +387,10 @@ static int cmd_show(int argc, char **argv)
struct list_head *all_uuids;
struct btrfs_fs_devices *fs_devices;
- struct btrfs_device *device;
struct list_head *cur_uuid;
char *search = NULL;
int ret;
- int where = BTRFS_SCAN_PROC;
+ int where = BTRFS_SCAN_LBLKID;
int type = 0;
while (1) {
@@ -453,17 +452,6 @@ devs_only:
if (search && uuid_search(fs_devices, search) == 0)
- /* skip mounted as they are already printed by
- * btrfs_scan_kernel
- */
- /* do it only for the default, no option */
- if (where == BTRFS_SCAN_PROC) {
- device = list_entry(fs_devices->,
- struct btrfs_device, dev_list);
- ret = check_mounted(device->name);
- if (ret)
- continue;
- }