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Old 09-13-2017, 03:01 PM   #16
Registered: Jan 2016
Distribution: None. Just OpenBSD.
Posts: 149

Rep: Reputation: 53

  • User who wish to share filesystems between OSes will usually dedicate a filesystem to this purpose. Generally, there isn't value in sharing filesystems with executable files (/usr/bin, /usr/lib, ...).
  • Beyond picking a filesystem mountable on the participating OSes, the filesystem should be selected based on operational needs, such as Unix access permissions or maximum file size.
The BSDs share common ancestry but they are not operationally identical, with many years of divergent development. You should not make any assumptions that what FreeBSD does is the same as NetBSD, or what NetBSD does is the same as OpenBSD.

As an example of filesystem management, here is how OpenBSD addresses this. The other BSDs will be different:
  • There are two "native" filesystems: FFS and FFS2, based on the Berkeley Fast File System. FFS must be used for booting from disk. FFS2 is for filessystems over 2TB in size.
  • OpenBSD also supports NFSv3 for networked filesystems. The NFS client is always operational, the NFS server requires the admin to provision built-in daemons. NFS can also be used for diskless(8) operation, with a variety of network boot technologies.
  • OpenBSD supports the following "foreign" filesystems: FAT, NTFS, EXT2/3/4. NTFS and EXT4 are read-only.
  • Optical media support includes the CD9660 and UDF filesystems.
  • OpenBSD can support additional filesystems via fuse(4), by installing third party packages. For example: SSHFS, NTFS read/write, and exFAT are all available through applications that use fuse(4).

Last edited by jggimi; 09-14-2017 at 06:10 AM. Reason: typos, clariy, and the addition of diskless(8) and optical media
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