OpenZFS on Linux and FreeBSD
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Brian Behlendorf d3aa3ea96e Preserve inode mtime/ctime in .writepage()
When updating a file via mmap()'ed I/O preserve the mtime/ctime
which were updated when the page was made writable by the generic
callback filemap_page_mkwrite().

But more importantly than preserving the exact time add the missing
call to sa_bulk_update().  This ensures that the znode modifications
are written to disk as part of the transaction.  Without this the
inode may mistaken rollback to the previous on-disk znode state.

Additionally, for mmap()'ed znodes explicitly set the atime, mtime,
and ctime on close using the up to date values in the inode.  This
is critical because writepage() may occur after close and on close
we need to ensure the values are correct.

Original-patch-by: Richard Yao <ryao@cs.stonybrook.edu>
Signed-off-by: Richard Yao <ryao@cs.stonybrook.edu>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #764
2012-12-05 13:00:25 -08:00
cmd vdev_id support for device link aliases 2012-12-03 14:04:47 -08:00
config Verify --with-linux source directory exists 2012-11-29 15:08:35 -08:00
dracut Remove autotools products 2012-08-27 11:47:44 -07:00
etc vdev_id support for device link aliases 2012-12-03 14:04:47 -08:00
include Directory xattr znodes hold a reference on their parent 2012-12-03 12:10:46 -08:00
lib Fix 'zpool create' segfault due to bad syntax 2012-12-04 11:15:25 -08:00
man vdev_id support for device link aliases 2012-12-03 14:04:47 -08:00
module Preserve inode mtime/ctime in .writepage() 2012-12-05 13:00:25 -08:00
patches Adding grub2 mkconfig support patch 2012-07-30 16:17:23 -07:00
scripts Implemented sharing datasets via SMB using libshare 2012-12-03 09:42:15 -08:00
udev vdev_id support for device link aliases 2012-12-03 14:04:47 -08:00
.gitignore Remove autotools products 2012-09-11 10:15:13 -07:00
AUTHORS Add "ashift" property to zpool create 2011-06-17 16:35:49 -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
ChangeLog Add build system 2010-08-31 13:41:27 -07:00
DISCLAIMER Update COPYRIGHT and DISCLAIMER. 2010-05-18 10:32:23 -07:00
META zfs-0.6.0-rc12 2012-11-13 14:35:44 -08:00
Makefile.am Add copy-builtin to EXTRA_DIST 2012-08-23 09:50:00 -07:00
OPENSOLARIS.LICENSE Add CDDL license file 2008-12-01 14:49:34 -08:00
PKGBUILD-zfs-modules.in Add make rule for building Arch Linux packages 2011-12-14 19:14:23 -08:00
PKGBUILD-zfs.in Add make rule for building Arch Linux packages 2011-12-14 19:14:23 -08:00
README.markdown Add script for builtin module building. 2012-07-26 13:45:09 -07:00
ZFS.RELEASE Update to onnv_147 2010-08-26 14:24:34 -07:00
autogen.sh Remove autotools products 2012-08-27 11:47:44 -07:00
configure.ac Add zstreamdump(8) command to examine ZFS send streams. 2012-09-02 14:54:27 -07:00
copy-builtin Consistent menuconfig name 2012-08-26 13:49:37 -07:00
dkms.conf.in Support building a zfs-modules-dkms sub package 2012-08-08 15:21:01 -07:00
dkms.postinst Support building a zfs-modules-dkms sub package 2012-08-08 15:21:01 -07:00
zfs-modules.spec.in Cleanly remove zfs-modules-devel headers 2012-08-13 16:35:26 -07:00
zfs-script-config.sh.in Unconditionally load core kernel modules 2010-11-11 11:38:25 -08:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00
zfs.spec.in Fix man page installation path 2012-08-10 15:32:30 -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

To copy the kernel code inside your kernel source tree for builtin compilation:

$ ./configure --enable-linux-builtin --with-linux=/usr/src/linux-...
$ ./copy-builtin /usr/src/linux-...

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