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Date: Wed, 30 Aug 2017 05:34:50 -0700 From: Christoph Hellwig <hch@...radead.org> To: Jan Kara <jack@...e.cz> Cc: Dave Chinner <david@...morbit.com>, Christoph Hellwig <hch@...radead.org>, Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org, Lukas Czerner <lczerner@...hat.com>, linux-xfs@...r.kernel.org Subject: Re: [PATCH] ext4: introduce per-inode DAX flag On Wed, Aug 30, 2017 at 12:00:59PM +0200, Jan Kara wrote: > /dev/ram0 /mnt xfs rw,relatime,attr2,dax,inode64,noquota 0 0 > > marvin5:~/:[0]# ls /mnt/ > fsxfile fsxfile.fsxgood fsxfile.fsxlog > > marvin5:~/:[0]# ./xfsprogs-dev/io/xfs_io -c 'lsattr' /mnt/fsxfile > -p-------------- /mnt/fsxfile > > marvin5:~/:[0]# ./xfsprogs-dev/io/xfs_io -c 'chattr +x' /mnt/fsxfile > > marvin5:~/:[0]# ./xfsprogs-dev/io/xfs_io -c 'lsattr' /mnt/fsxfile > -p-------------- /mnt/fsxfile > > No DAX flag set and no error... What am I doing wrong? Odd. Even on a non-DAX device the flag sticks for me: root@...tvm:~# mount /dev/sda /mnt/ root@...tvm:~# touch foo root@...tvm:~# cd /mnt/ root@...tvm:/mnt# xfs_io -c 'chattr +x' foo root@...tvm:/mnt# xfs_io -c 'lsattr' foo --------------x- foo
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