It has always been possible for inode numbers in XFS to be more than 32
bits in size. This creates large problems for the rest of linux. This
change restricts the allocation of inodes in an xfs filesystem to that
part of the fs which will keep the inodes within 32 bits (basically
the bottom 1 Tbyte with default mkfs parameters). For these large
filesystems it also makes xfs file data prefer being higher up the
filesystem to retain space for inodes and metadata in the lower
portion.
There is no on disk format change for this, but you will need to rebuild
mkfs to build a filesystem which can use it - there is some automatic
inode sizing code in mkfs which worked around the problem.
Date: Mon Dec 3 09:52:09 PST 2001
Workarea: jen.americas.sgi.com:/src/lord/xfs-linux.2.4
The following file(s) were checked into:
bonnie.engr.sgi.com:/isms/slinx/2.4.x-xfs
Modid: 2.4.x-xfs:slinx:107651a
linux/fs/xfs/xfsidbg.c - 1.166
- Add new fields to perag dump
linux/fs/xfs/xfs_ialloc.c - 1.150
- For inode allocation skip allocation groups which would place an inode
out of range and make it larger than 32 bits.
linux/fs/xfs/xfs_ag.h - 1.40
- Add new fields to perag structure
linux/fs/xfs/xfs_vfsops.c - 1.328
- Add in XFS_MOUNT_32BITINODES mount option
linux/fs/xfs/xfs_clnt.h - 1.25
- Define XFSMNT_32BITINODES flag
linux/fs/xfs/xfs_mount.h - 1.131
- Prototype for xfs_initialize_perag
linux/fs/xfs/xfs_mount.c - 1.264
- Add xfs_initialize_perag to calculate the maximum ag which is safe for
inodes when operating in 32 bit mode.
linux/fs/xfs/xfs_alloc.c - 1.144
- Changes for rotating file data through allocation groups when
32 bit inode code is enabled.
linux/fs/xfs/xfs_alloc.h - 1.48
- New flags for data allocation mode
linux/fs/xfs/xfs_fsops.c - 1.71
- Reinitialize the xfs_initialize_perag after a growfs
linux/fs/xfs/xfs_bmap.c - 1.278
- Pass in new flag to allocator indicating if this is the initial
data allocation for a file or not.
linux/fs/xfs/linux/xfs_super.c - 1.145
- Add 32 bit inode flag to mount options
cmd/xfsprogs/mkfs/xfs_mkfs.c - 1.17
- Comment out automatic inode size selection code in mkfs
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