| To: | LukÃÅ Czerner <lczerner@xxxxxxxxxx> |
|---|---|
| Subject: | Re: [PATCH] xfs_mkfs: wipe old signatures from the device |
| From: | Karel Zak <kzak@xxxxxxxxxx> |
| Date: | Wed, 13 Feb 2013 13:16:55 +0100 |
| Cc: | Dave Chinner <david@xxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, sandeen@xxxxxxxxxx, Zach Brown <zabrown@xxxxxxxxxx>, linux-btrfs@xxxxxxxxxxxxxxx |
| Delivered-to: | xfs@xxxxxxxxxxx |
| In-reply-to: | <alpine.LFD.2.00.1302131127070.2315@(none)> |
| References: | <1360667215-14701-1-git-send-email-lczerner@xxxxxxxxxx> <20130212202753.GC26694@dastard> <20130213080154.GC18597@xxxxxxxxxxx> <alpine.LFD.2.00.1302131127070.2315@(none)> |
| User-agent: | Mutt/1.5.21 (2012-12-30) |
On Wed, Feb 13, 2013 at 11:41:08AM +0100, LukÃÅ Czerner wrote: > However > > mkfs.btrfs /dev/sda > mkfs.ext4 -F /dev/sda > > works well, however I am not sure why that is. Is that some kind of > mount(8) magic ? This is bug in libmount. Fixed in upstream tree. The libmount in some cases ignores the ambivalent probing result from libblkid and tries stuff from /etc/filesystems (where is for example ext4). > So I think that liblkid _and_ btrfs tools has to be fixed not to treat > backup superblocks as primary! The problem with additional btrfs superblocks has been already reported to btrfs guys: http://www.mail-archive.com/linux-btrfs@xxxxxxxxxxxxxxx/msg20957.html and I don't see a reply "yep, this is btrfs-progs bug" :-) Karel -- Karel Zak <kzak@xxxxxxxxxx> http://karelzak.blogspot.com |
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