On Fri, Sep 05, 2014 at 11:51:24PM +0800, Anand Jain wrote: > Here is a test case which says it all.. > > mkfs.xfs -f $DEV > mkfs.btrfs -f $DEV > mount $DEV $MNT > mount: /dev/vdiskc: more filesystems detected. This should not happen, > use -t <type> to explicitly specify the filesystem type or > use wipefs(8) to clean up the device. > > mount: you must specify the filesystem type > > with this patch btrfs_prepare_device() also wipes old FS if any, > btrfs_prepare_device() is called after we have verified that > user has provided -f option.
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