Mounting (read/write) ext4

Waitman Gobble gobble.wa at
Mon Jan 9 00:15:28 UTC 2012

On Sun, Jan 8, 2012 at 11:57 AM, Chris <racerx at> wrote:

> Can the upcoming FreeBSD 9 mount ext4 file systems out of the box?
Trying USB external disk that has ext4 partition /dev/da0s1 and NTFS
partition /dev/da0s2,
   at the moment ext4 doesn't appear to work 'out of the box' - or my mount
command is boo-boo

[root at p00ntang /usr/home/waitman]# uname -a
FreeBSD p00ntang 9.0-RC3 FreeBSD 9.0-RC3 #0: Sun Dec  4 08:01:02 UTC 2011
  root at  i386

[root at p00ntang /usr/home/waitman]# mount -t ext2fs -o ro /dev/da0s1
mount: /dev/da0s1 : Invalid argument

da0 at umass-sim0 bus 0 scbus3 target 0 lun 0
da0: <Seagate FreeAgent GoFlex 211> Fixed Direct Access SCSI-0 device
da0: 40.000MB/s transfers
da0: 476940MB (976773167 512 byte sectors: 255H 63S/T 60801C)
WARNING: mount of da0s1 denied due to unsupported optional features

[root at p00ntang /usr/home/waitman]# mount
/dev/ada0p2 on / (ufs, local, journaled soft-updates)
devfs on /dev (devfs, local, multilabel)
/dev/da0s2 on /mnt/music (ntfs, local)

checking to see, maybe need kernel support for ext compiled in (which
doesn't sound so much "out of the box")


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