On Wednesday, August 17, 2016 11:26:13 PM Neil Bothwick wrote: > I'm putting together a new desktop using a Samsung SM951 NVMe drive. I > booted sysrescd, partitioned the drive and ran > > mkfs.btrfs /dev/nvme0n1p3 > mount /dev/nvme0n1p3 /mnt/custom > > df -T, mount and findmnt all show this is mounted as a btrfs filesystem, > e.g. > > /dev/nvme0n1p3 on /mnt/custom type btrfs (rw,relatime,ssd,space_cache) > > I can create files in here but cannot do anything btrfs-y > > % btrfs filesystem show /mnt/custom > ERROR: not a valid btrfs filesystem: /mnt/custom > > % btrfs subvolume create /mnt/custom/test > Create subvolume '/mnt/custom/test' > ERROR: cannot create subvolume: Inappropriate ioctl for device > > Google has been no help at all.
Neil, I've got a similar drive in my desktop and it actually works. Difference: I am using Ext4. Can you try Ext4 and see if it works? Next test: Does it work with a non-NVMe drive? Also, which kernel version? -- Joost
