Re: [Libguestfs] [PATCH 1/2] mkfs: Don't allow blocksize to be set on btrfs (RHBZ#807905).

From: "Richard W.M. Jones"<rjones(a)redhat.com> --- daemon/mkfs.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/daemon/mkfs.c b/daemon/mkfs.c index 5475582..492b690 100644 --- a/daemon/mkfs.c +++ b/daemon/mkfs.c @@ -133,6 +133,11 @@ do_mkfs_opts (const char *fstype, const char *device, int blocksize, ADD_ARG (argv, i, "-c"); ADD_ARG (argv, i, blocksize_str); } + else if (STREQ (fstype, "btrfs")) { + /* For btrfs, blocksize cannot be specified (RHBZ#807905). */ + reply_with_error ("blocksize cannot be set on btrfs filesystems"); + return -1; + } else { /* For all other filesystem types, try the -b option. */ snprintf (blocksize_str, sizeof blocksize_str, "%d", blocksize);