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Gordon Ross ef3c1dea70 Illumos #764: panic in zfs:dbuf_sync_list 
Hypothesis about what's going on here.

At some time in the past, something, i.e. dnode_reallocate()
calls one of:
dbuf_rm_spill(dn, tx);

These will do:
dbuf_rm_spill(dnode_t *dn, dmu_tx_t *tx)
dbuf_free_range(dn, DMU_SPILL_BLKID, DMU_SPILL_BLKID, tx)
dbuf_undirty(db, tx)

Currently dbuf_undirty can leave a spill block in dn_dirty_records[],
(it having been put there previously by dbuf_dirty) and free it.
Sometime later, dbuf_sync_list trips over this reference to free'd
(and typically reused) memory.

Also, dbuf_undirty can call dnode_clear_range with a bogus
block ID. It needs to test for DMU_SPILL_BLKID, similar to
how dnode_clear_range is called in dbuf_dirty().

References to Illumos issue and patch:
- https://www.illumos.org/issues/764
- https://github.com/illumos/illumos-gate/commit/3f2366c2bb

Reviewed by: George Wilson <gwilson@zfsmail.com>
Reviewed by: Mark.Maybe@oracle.com
Reviewed by: Albert Lee <trisk@nexenta.com
Approved by: Garrett D'Amore <garrett@nexenta.com>

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #340
2011-08-01 12:09:11 -07:00
cmd Provide a rc.d script for archlinux 2011-07-11 14:12:23 -07:00
config Fix the configure CONFIG_* option detection 2011-07-22 15:07:16 -07:00
dracut Wrap dracut scripts to 79 chars 2011-07-31 11:28:44 -07:00
etc Add .gitignore for zfs.<distro> init scripts 2011-08-01 10:27:54 -07:00
include Provide a rc.d script for archlinux 2011-07-11 14:12:23 -07:00
lib Provide a rc.d script for archlinux 2011-07-11 14:12:23 -07:00
man Update 'zpool import' man page 2011-07-19 11:24:20 -07:00
module Illumos #764: panic in zfs:dbuf_sync_list 2011-08-01 12:09:11 -07:00
patches Add build system 2010-08-31 13:41:27 -07:00
scripts Provide a rc.d script for archlinux 2011-07-11 14:12:23 -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 Turn the init.d scripts into autoconf config files 2011-08-01 09:54:44 -07:00
configure.ac Turn the init.d scripts into autoconf config files 2011-08-01 09:54:44 -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 Add dracut support 2011-03-17 16:52:04 -07:00
Makefile.in Provide a rc.d script for archlinux 2011-07-11 14:12:23 -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 Linux compat 2.6.39: mount_nodev() 2011-07-01 13:36:39 -07:00
zfs-modules.spec.in Fix rebuildable RPMs for el6/ch5 2011-04-08 10:22:42 -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 Remove zfs service only on uninstall, not on upgrade 2011-07-08 11:44:17 -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