The command btrfs subvolume set-default 0 /path/to/fs changed the
default subvolume to whatever subvolume was currently mounted on
/path/to/fs. This patch changes this behaviour to set the default
subvolume to BTRFS_FS_TREE_OBJECTID in case the user asks for
subvolid=0
Signed-off-by: Alexander Karbstein <alexander.karbst...@gmail.com>
---
btrfs_cmds.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/btrfs_cmds.c b/btrfs_cmds.c
index f2b6355..699d9b0 100644
--- a/btrfs_cmds.c
+++ b/btrfs_cmds.c
@@ -964,6 +964,11 @@ int do_set_default_subvol(int nargs, char **argv)
fprintf(stderr, "ERROR: invalid tree id (%s)\n",subvolid);
return 30;
}
+
+ /* Using the original root fs tree */
+ if (objectid == 0ULL) {
+ objectid = BTRFS_FS_TREE_OBJECTID;
+ }
ret = ioctl(fd, BTRFS_IOC_DEFAULT_SUBVOL, &objectid);
e = errno;
close(fd);
--
1.7.2.5
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