4 ms·

Dragonfly BSD

31 points by neuromanser 3y ago

neuromanser 3y ago
The impulse for submitting this was seeing two submissions for unrelated projects called Dragonfly, possibly DragonflyThisOrThat. I'm not even claiming this one is the OG. But we need as much plurality in the OS department as we can get, and these ppl deserve every bit they can get.
- lproven 3y ago
  I took a look at it. https://www.theregister.com/2023/01/06/dragonfly_bsd_6_4/ https://www.theregister.com/2023/01/06/dragonfly_bsd_6_4/
sillywalk 3y ago
For a small (vs. the other BSDs) development group, it has some impressive features.[0] High SMP/NUMA friendly Scaling and the The HAMMER2 Filesystem[1] in particular is an Atomic COW[2]. [0] https://www.dragonflybsd.org/features/ https://www.dragonflybsd.org/features/ [1] https://www.dragonflybsd.org/hammer/ https://www.dragonflybsd.org/hammer/ [2] https://arstechnica.com/information-technology/2014/01/bitrot-and-atomic-cows-inside-next-gen-filesystems/ https://arstechnica.com/information-technology/2014/01/bitro...
luzifer42 3y ago
DragonflyBSD is one of the few BSD distributions which support device-mapper. https://man.dragonflybsd.org/?command=dm_target_crypt&section=4 https://man.dragonflybsd.org/?command=dm_target_crypt&sectio... Quite useful to mount PS3 disks, to recover old savegames ;) https://www.psdevwiki.com/ps3/Mounting_HDD_on_PC https://www.psdevwiki.com/ps3/Mounting_HDD_on_PC
- sillywalk 3y ago
  Interesting, "The device-mapper disk driver first appeared in NetBSD 6.0. It was then brought into DragonFly 2.7 by Alex Hornung." [0][1] Don't know about NetBSD and Crypto-DM, but "DragonFly has a device mapper target called dm_target_crypt(4) (compatible with Linux's dm-crypt) that provides transparent disk encryption. It makes best use of available cryptographic hardware, as well as multi-processor software crypto. DragonFly fully supports LUKS (cryptsetup(8)) and TrueCrypt as disk encryption methods. tcplay(8), is a free (BSD-licensed) 100% compatible TrueCrypt implementation built on dm_target_crypt(4)." [2] [0] https://man.netbsd.org/dm.4 https://man.netbsd.org/dm.4 [1] https://man.dragonflybsd.org/?command=dm&section=4 https://man.dragonflybsd.org/?command=dm&section=4 [2] https://www.dragonflybsd.org/features/#index6h2 https://www.dragonflybsd.org/features/#index6h2

31 points by neuromanser 3y ago

The impulse for submitting this was seeing two submissions for unrelated projects called Dragonfly, possibly DragonflyThisOrThat. I'm not even claiming this one is the OG. But we need as much plurality in the OS department as we can get, and these ppl deserve every bit they can get.

lproven 3y ago
I took a look at it. https://www.theregister.com/2023/01/06/dragonfly_bsd_6_4/ https://www.theregister.com/2023/01/06/dragonfly_bsd_6_4/

sillywalk 3y ago

For a small (vs. the other BSDs) development group, it has some impressive features.[0] High SMP/NUMA friendly Scaling and the The HAMMER2 Filesystem[1] in particular is an Atomic COW[2]. [0] https://www.dragonflybsd.org/features/ https://www.dragonflybsd.org/features/ [1] https://www.dragonflybsd.org/hammer/ https://www.dragonflybsd.org/hammer/ [2] https://arstechnica.com/information-technology/2014/01/bitrot-and-atomic-cows-inside-next-gen-filesystems/ https://arstechnica.com/information-technology/2014/01/bitro...

luzifer42 3y ago

DragonflyBSD is one of the few BSD distributions which support device-mapper. https://man.dragonflybsd.org/?command=dm_target_crypt&section=4 https://man.dragonflybsd.org/?command=dm_target_crypt&sectio... Quite useful to mount PS3 disks, to recover old savegames ;) https://www.psdevwiki.com/ps3/Mounting_HDD_on_PC https://www.psdevwiki.com/ps3/Mounting_HDD_on_PC

sillywalk 3y ago
Interesting, "The device-mapper disk driver first appeared in NetBSD 6.0. It was then brought into DragonFly 2.7 by Alex Hornung." [0][1] Don't know about NetBSD and Crypto-DM, but "DragonFly has a device mapper target called dm_target_crypt(4) (compatible with Linux's dm-crypt) that provides transparent disk encryption. It makes best use of available cryptographic hardware, as well as multi-processor software crypto. DragonFly fully supports LUKS (cryptsetup(8)) and TrueCrypt as disk encryption methods. tcplay(8), is a free (BSD-licensed) 100% compatible TrueCrypt implementation built on dm_target_crypt(4)." [2] [0] https://man.netbsd.org/dm.4 https://man.netbsd.org/dm.4 [1] https://man.dragonflybsd.org/?command=dm&section=4 https://man.dragonflybsd.org/?command=dm&section=4 [2] https://www.dragonflybsd.org/features/#index6h2 https://www.dragonflybsd.org/features/#index6h2