Difference between revisions of "Projects"

Revision as of 15:37, 8 September 2013

Ideas for projects that would help coordinate changes between platforms:

Mechanism for pull changes from one place to another
- Make it easier to build, test, code review, and integrate ZFS changes into illumos
Cross-Platform Test Suite
- One sourcebase rather than porting STF to every platform?
- Maybe integrate XFS Test Suite
Userland ZFS
- we already have ztest / libzpool
- want to expand this to also be able to test more of zfs in userland
- want to be able to run /sbin/zfs, /sbin/zpool against userland implementation
- want to be able to run most of testrunner (and/or STF) test suite against userland implementation
ZFS (ZPL) Version Feature Flags
- Import ZFSOnLinux sa=xattr into Illumos
/dev/zfs ioctl interface versioning
- Ensure that future additions/changes to the interface maintain maximum compatibility with userland tools
- Enable FreeBSD Linux jails / Illumos lx brandz to use ZFSOnLinux utilities
Port ZPIOS [1] to Illumos from ZFSOnLinux
- This requires a rewrite to stop using Linux interfaces.
Virtual machine images with OpenZFS (see discussion on talk page)
- to easily try OpenZFS on a choice of distributions within a virtual machine
- images could be built for running on public clouds
- images for installing to real hardware:
  - Raspberry Pi ( ryao is working on this)
    - Based on ZFSonLinux, which already works on ARM
    - Some unresolved issues with running out of kernel virtual address space

device removal
- based on indirect vdevs, rather than bprewrite
resumable send/receive
- work in progress at Delphix
Storage of small files in dnode
- work in progress at Delphix
Reflink[2] support
Unified ashift handling [3]
Collapsible ZAP objects (e.g. fatzip -> microzap downgrades)
Raidz Hybrid Allocator (preferably compatible with pool version 29 for Solaris 10u11 compatibility)
1MB blocksize (preferably compatible with pool version 32, as pool-feature-flag)
Replace larger ZIO caches with explicit pages.
- Subproject: Document useful kernel interfaces for page manipulation on various platforms
Improved SPA namespace collision management
- Mostly needed by virtual machine hosts
- work in progress in Gentoo
- Temporary pool names in zpool import [4]
- Temporary pool names in zpool create
TRIM Support
- Realtime TRIM
- Freespace TRIM
  - Walk metaslab space maps and issue discard commands to the vdevs.
Platform agnostic encryption support (preferably compatible with pool version 30, as pool-feature-flag)
- The early ZFS encryption code published in the zfs-crypto repository of OpenSolaris.org could be a starting point. A copy is available from Richard Yao upon request.

Please add and edit ideas here

@@ Line 20: / Line 20: @@
 * Port ZPIOS [http://zfsonlinux.org/example-zpios.html] to Illumos from ZFSOnLinux
 ** This requires a rewrite to stop using Linux interfaces.
-* Virtual machine images of various distributions?  To play around with ZFS preconfigured on each of them
+* Virtual machine images with OpenZFS (see [[Talk:Project_Ideas#Virtual_machine_images|discussion on talk page]])
-** Suggest a common design/format of these (e.g. qcow2? vdi? ~256MiB raw disk image of a compressed ZFS root filesystem? BIOS bootable?)
+** to easily try OpenZFS on a choice of distributions within a virtual machine
-** Images could even be designed to work directly on some public clouds
+** images could be built for running on public clouds
-** Raspberry Pi images
+** images for installing to real hardware:
-*** Based on ZFSonLinux, which already works on ARM
+*** Raspberry Pi ([[User:Ryao | ryao]] is working on this)
-*** Some unresolved issues with running out of kernel virtual address space
+**** Based on ZFSonLinux, which already works on ARM
-*** [[User:Ryao | ryao]] is working on this
+**** Some unresolved issues with running out of kernel virtual address space
 == General features ==