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Andreas Dilger baab063016 zpl: Fix "df -i" to have better free inodes value 
Due to the confusion in Linux statfs between f_frsize and f_bsize
the blocks counts were changed to be in units of z_max_blksize
instead of SPA_MINBLOCKSIZE as it is on other platforms.

However, the free files calculation in zfs_statvfs() is limited by
the free blocks count, since each dnode consumes one block/sector.
This provided a reasonable estimate of free inodes, but on Linux
this meant that the free inodes count was underestimated by a large
amount, since 256 512-byte dnodes can fit into a 128kB block, and
more if the max blocksize is increased to 1MB or larger.

Also, the use of SPA_MINBLOCKSIZE is semantically incorrect since
DNODE_SIZE may change to a value other than SPA_MINBLOCKSIZE and
may even change per dataset, and devices with large sectors setting
ashift will also use a larger blocksize.

Correct the f_ffree calculation to use (availbytes >> DNODE_SHIFT)
to more accurately compute the maximum number of dnodes that can
be created.

Signed-off-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #413
Closes #400
2011-09-28 11:27:10 -07:00
cmd Fix uninitialized varible in zfs_do_userspace() 2011-09-27 16:56:38 -07:00
config Convert 'if' statements to AS_IF in kernel.m4 2011-09-06 13:20:48 -07:00
dracut Fix boot failure in Dracut scripts. 2011-09-26 09:29:51 -07:00
etc Use automatic variable in Makefile 2011-09-26 09:22:30 -07:00
include Export symbols for the full ZAP API 2011-09-27 16:12:36 -07:00
lib Make libefi-created GPT compatible with gptfdisk 2011-09-26 09:44:43 -07:00
man Autogen refresh for udev changes 2011-08-08 16:30:27 -07:00
module zpl: Fix "df -i" to have better free inodes value 2011-09-28 11:27:10 -07:00
patches Add build system 2010-08-31 13:41:27 -07:00
scripts Autogen refresh for udev changes 2011-08-08 16:30:27 -07:00
udev Move 90-zfs udev rule from dracut to udev/rules.d 2011-08-19 16:26:13 -07:00
.gitignore Ignore unsigned module build products 2010-03-09 14:14:09 -08:00
AUTHORS Add "ashift" property to zpool create 2011-06-17 16:35:49 -07:00
autogen.sh Make autogen.sh executable 2011-07-26 10:15:35 -07:00
ChangeLog Add build system 2010-08-31 13:41:27 -07:00
configure Convert 'if' statements to AS_IF in kernel.m4 2011-09-06 13:20:48 -07:00
configure.ac Fix autoconf variable substitution in init scripts. 2011-08-19 16:26:14 -07:00
COPYING Relocate COPYING+COPYRIGHT, remove README cruft 2008-12-01 15:34:53 -08:00
COPYRIGHT Update COPYRIGHT to reference zpios CDDL exceptions. 2010-05-18 14:25:28 -07:00
DISCLAIMER Update COPYRIGHT and DISCLAIMER. 2010-05-18 10:32:23 -07:00
Makefile.am Move udev rules from /etc/udev to /lib/udev 2011-08-08 16:21:10 -07:00
Makefile.in Autogen refresh for udev changes 2011-08-08 16:30:27 -07:00
META Prep zfs-0.6.0-rc5 tag 2011-07-01 15:24:34 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
README.markdown Fix markdown rendering 2010-09-15 09:09:37 -07:00
zfs_config.h.in Add backing_device_info per-filesystem 2011-08-04 13:37:38 -07:00
zfs-modules.spec.in Fix package URLs to use the github repository 2011-09-06 13:37:13 -07:00
zfs-script-config.sh.in Unconditionally load core kernel modules 2010-11-11 11:38:25 -08:00
ZFS.RELEASE Update to onnv_147 2010-08-26 14:24:34 -07:00
zfs.spec.in Install zfs-devel headers in /usr/include 2011-09-12 11:45:23 -07:00

README.markdown

Native ZFS for Linux! ZFS is an advanced file system and volume manager which was originally developed for Solaris. It has been successfully ported to FreeBSD and now there is a functional Linux ZFS kernel port too. The port currently includes a fully functional and stable SPA, DMU, and ZVOL with a ZFS Posix Layer (ZPL) on the way!

$ ./configure
$ make pkg

Full documentation for building, configuring, and using ZFS can be found at: http://zfsonlinux.org