The current work item list for XFS on Linux are listed below. The individual(s) working on the item are listed before the description of each item. Some items are unassigned.

Beta release

Steve and Ananth and Chait

Ongoing Pagebuf and I/O path work: remove delwri from I/O path, improve delalloc, clean up sync writes, delalloc I/O clustering, handle unwritten extents, tune the way the daemons run.

Steven

Documentation: XFS admin manual outline. The admin guide needs to get started.

Steve

Integrate any new fixes from the latest XFS in 6.5.[89]f into the Linux tree (ongoing task).

Russell

Maintain CVS tree on oss.sgi.com (ongoing task).

Chait

Integrate kiobufs into more disk drivers and provide interface similar to ll_rw_block for XFS (and any other file system). This should also work for volume managers like LVM, md, ... This has been done for scsi and needs to be moved into volume managers and other drivers.

Ananth

IA-64 port.

Chait

The interface through ll_rw_block() must be able to handle multiple block sizes so I/O can go bigger than 512 bytes.

Ivan and Tim

Port xfs_dump & xfs_restore to Linux.

Andrew and Martin

Port xfs_growfs and growfs specific ioctls. xfs_growfs needs to work with various volume managers.

Linuxcare (Martin)/Heinz(LVM)

Volume manager work: Allow XFS to sit on top of LVM and MD extract stripe info from volume manager at mkfs time. Support separate log, data, realtime subvolumes, or multiple devices.

everyone

Compile warnings and cleanup. Kill dead code, fix compile warnings. Each person should continue removing IRIX specific or any duplicate code as they see it.

everyone.

Run other fs tests and fix XFS problems. These tests include: growfiles, randholes, fsstress, and xfs crash tests. Continue to run iogen/doio, kernel builds, and lmbench/dbench.

unassigned

Finalize extended attribute interface (coordinate with http://acl.bestbits.at/).

unassigned

Enable error injecting code and test

unassigned.

Replace the MR locks in XFS with the 2.3 new locks and possibly push locking code into 2.3.

Anath

XFS port has been using 4K file system block sizes. mkfs needs to be run with all block size that the man page supports and either change these or show that they work. I suspect that block sizes smaller than PAGESIZE will not work now. In fact, bigger than PAGESIZE probably won't work either. We should also test out all the other variable sizes in mkfs like inode size, and log size, etc.

unassigned

Other 64 Bit work: the block number in buffer_head and other structures is only 32 bit. This restricts the maximum file size. Get enough disk to actually create a 10 TB file system and show XFS running on it until it is full. This will probably uncover other problems besides the block number.

unassigned

Sync: walk through xfs_syncsub and make sure that all the checks are valid. Some may still be IRIX specific. Take into account the new sync'ing structure on Linux, i.e. write_super, write_inode, the page cleaner, and shrink_mmap.

unassigned

There are many "versions" and options currently supported by XFS on IRIX. This includes things like version 1 directories and unwritten extents. We must decide which of all these will be supported on Linux.

unassigned

support XFS on loopback devices.

Later releases

Linuxcare (Martin)

64 Bit inode numbers: with very large file systems, inode #s can get bigger than 32 bits. Get this working for XFS on Linux. This requires changes all the way through Linux and including libc.

Dean

implement DMAPI

Ananth & Steve

Direct I/O: We need to be able to turn the users pages into a pagebuf. This involves having kiobufs point to user memory (already done for raw I/O), and flushing any buffered user data that is dirty (since it will be read directly from disk). The read part is somewhat there but we need to flush dirty pages.

unassigned

Flush/invalidate/toss pages for an inode. This is mostly there (pagebuf_inval) but more work may be needed for direct I/O.

unassigned

Realtime: configure and test.

unassigned

GRIO & ggd. Work has been done on this - see nathans@melbourne and dxm@melbourne.

Nathan

Quotas: There are linux quotas and xfs quotas .....

unassigned

Get ACLs and capability sets working in XFS on Linux.

unassigned

Add the ability to run without the log. This is lower priority but would be useful in comparing XFS to ext2 and other non-journalled file systems. Stub out LOG/trans code for XFS. This would need to be a mount and/or mkfs option.

unassigned

Many IRIX/MIPS XFS file systems are in xlv or xvm volumes. There must be a way to read these file system.

unassigned

Modify linux dump/restore to work with xfs.