ZFS on OSX and Windows

Notice: Page may contain affiliate links for which we may earn a small commission through services like Amazon Affiliates or Skimlinks.
F

Freebsd1976

Active Member
Feb 23, 2018
419
77
28
@gea considering between winbtrfs and openzfs on windows for media file storage, both are beta or RC, which is better?
 
B

bugacha

Active Member
Sep 21, 2024
449
132
43
Last time I tried it, which was just a month ago, it was dead slow. See screenshots above.

Also windows 2025 server would BSOD on attempt to uninstall ZFS
 
Last edited:
G

gea

Well-Known Member
Dec 31, 2010
3,484
1,370
113
DE
new day, new release
rc3
  • Fix BSOD running CrystalDiskMark
  • Fix userland hostid mismatching
  • Change mount code to only open mountmgr once

    Jorgen Lundman, maintainer of OpenZFS for Windows is working hard for a release edition
    Test it and report remaining problems!
 
G

gea

Well-Known Member
Dec 31, 2010
3,484
1,370
113
DE
Releases · openzfsonwindows/openzfs

With the help of many users evaluating and reporting issues, OpenZFS on Windows becomes better and better with very short cycles between release candidates on the way to a release

Issues · openzfsonwindows/openzfs
openzfsonwindows openzfs · Discussions

rc5

  • Correct permissions of mount object (access_denied error with delete)
  • Work on partitioning disks (incomplete)
  • SecurityDescriptor work
rc4

  • mountmgr would deadlock with Avast installed
  • Change signal to userland to Windows API
  • Additional mount/unmount changes.
  • Fixed VSS blocker again
remainig but known problem for zpool import (pool not found)
In Windows 24H2 there seems to be some sort of partition background monitoring active that does an undo of "unknown" partition modifications. A current workaround is to use Active@disk editor (free) to modify sector 200.00 from value 45 to 15

2.3.1rc4 (usb disks) zpool import: no pool found · Issue #465 · openzfsonwindows/openzfs
 
G

gea

Well-Known Member
Dec 31, 2010
3,484
1,370
113
DE
  • Like
Reactions: Aquatechie
G

gea

Well-Known Member
Dec 31, 2010
3,484
1,370
113
DE
OpenZFS for Windows 2.3 becomes better and better

rc8
  • Finish Partition work at 128
  • Also read Backup label in case Windows has destroyed Primary
  • OpenZVOL should depend on Storport or it can load too soon
  • Change FSType to NTFS as default
 
G

gea

Well-Known Member
Dec 31, 2010
3,484
1,370
113
DE
As I understand it

Some apps ask for filesystem type. If not fat*, ntfs or Refs they refuse to work ex start the application from a ZFS pool. As long as Microsoft (or OSX) does not add ZFS (or btrfs) to the list of valid filesystems there is a need of an overrun option.

There is an additional ZFS property for ZFS on OSX and Windows "com.apple.mimic" (property was introduced with ZFS on OSX). Up to rc7 the default was off (=ZFS). This had the effect that some apps do not start from a ZFS pool unless you set com.apple.mimic manually to ntfs. The new behaviour on rc8 is that the default is "ntfs" unless you manually set another property for com.apple.mimic for a "it just works" behaviour.

Setting a different value for com.apple.mimic is possible but only needed in special use cases.

see also OpenZFS on OS X • View topic - com.apple.mimic settings
 
Last edited:
  • Like
Reactions: etorix
Laugh|nGMan

Laugh|nGMan

Member
Nov 27, 2012
50
10
8
gea said:
OpenZFS for Windows 2.3 becomes better and better

rc8
  • Finish Partition work at 128
  • Also read Backup label in case Windows has destroyed Primary
  • OpenZVOL should depend on Storport or it can load too soon
  • Change FSType to NTFS as default
Click to expand...

Not usable atm for me.
I still have issues with RC8 and large files ~5Gb iso. Freezes at end. Speed was abysmal. Previous RC6 on this operation resulted in BSOD.
1748193392799.png
 
G

gea

Well-Known Member
Dec 31, 2010
3,484
1,370
113
DE
Write an issue report how to reproduce.
In the past few weeks, most issues were already solved.

github.com

Issues · openzfsonwindows/openzfs

OpenZFS on Linux and FreeBSD. Contribute to openzfsonwindows/openzfs development by creating an account on GitHub.
github.com github.com

btw
First seconds of copy goes to ramcache
tried 5.4 GB iso, copied in 12s =450 MB/s
drive c: -> pool on .vhdx on same disk

no freeze at the end

not super, but ok for a software with debug code not optimized for performance.
To compare you would need ReFS (also CoW) with data checksums enabled

1748198611523.png
 
Last edited:
G

gea

Well-Known Member
Dec 31, 2010
3,484
1,370
113
DE
OpenZFS 2.3 on OSX s now a release edition, no longer a release candidate
github.com

Release zfs-macOS-2.3.0 · openzfsonosx/openzfs-fork

Upstream changelog RAIDZ Expansion (openzfs#15022): Add new devices to an existing RAIDZ pool, increasing storage capacity without downtime. Fast Dedup (openzfs#15896): A major performance upgrade...
github.com github.com
 
G

gea

Well-Known Member
Dec 31, 2010
3,484
1,370
113
DE
OpenZFS on Windows 2.3.1 rc9 is available
  • OpenZVOL unload BSOD fix
  • Implement kernel vsnprintf instead of CRT version
  • Change zed service from zed.inf to cmd service
  • Change CMake to handle x64 and arm64 builds
  • Produce ARM64 Windows installer.
rc8
  • Finish Partition work at 128
  • Also read Backup label in case Windows has destroyed Primary
  • OpenZVOL should depend on Storport or it can load too soon
  • Change FSType to NTFS as default

OpenZFS on Windows has reached a "quite usable" state now with major problems of earlier release candidates fixed
Prior use, do some tests and read issues and discussions

github.com

Releases · openzfsonwindows/openzfs

OpenZFS on Linux and FreeBSD. Contribute to openzfsonwindows/openzfs development by creating an account on GitHub.
github.com github.com
 
You must log in or register to reply here.
Top Bottom