Commit Graph

1729 Commits

Author SHA1 Message Date
Brian Behlendorf 91975bc4f9 Merge branch 'linux-kernel-disk' into refs/top-bases/linux-zfs-branch 2010-05-18 11:40:29 -07:00
Brian Behlendorf a2c57ce830 Update headers to be correct for public release
This includes adding the copyright where appropriate, author
attribution, and including the Lawrence Livermore National
Security, LLC release code for new/rewritten files.
2010-05-18 11:31:37 -07:00
Brian Behlendorf a1658d8d17 Merge branch 'linux-debug-zerocopy' into refs/top-bases/linux-zfs-branch 2010-05-14 13:31:32 -07:00
Brian Behlendorf bb5e111dde Merge commit 'refs/top-bases/linux-debug-zerocopy' into linux-debug-zerocopy 2010-05-14 13:31:29 -07:00
Brian Behlendorf 08eb7517c4 Remove 3 symbols which no longer need to be exported.
EXPORT_SYMBOL(zfs_ereport_post);
EXPORT_SYMBOL(zfs_post_remove);
EXPORT_SYMBOL(zfs_post_autoreplace);
2010-05-14 13:00:22 -07:00
Brian Behlendorf feb723fa7d Merge branch 'linux-events' into refs/top-bases/linux-zfs-branch 2010-05-14 12:55:10 -07:00
Brian Behlendorf 97d19a5e45 Add linux-events topic branch for zevent handling.
This topic branch leverages the Solaris style FMA call points
in ZFS to create a user space visible event notification system
under Linux.  This new system is called zevent and it unifies
all previous Solaris style ereports and sysevent notifications.

Under this Linux specific scheme when a sysevent or ereport event
occurs an nvlist describing the event is created which looks almost
exactly like a Solaris ereport.  These events are queued up in the
kernel when they occur and conditionally logged to the console.
It is then up to a user space application to consume the events
and do whatever it likes with them.

To make this possible the existing /dev/zfs ABI has been extended
with two new ioctls which behave as follows.

* ZFS_IOC_EVENTS_NEXT
Get the next pending event.  The kernel will keep track of the last
event consumed by the file descriptor and provide the next one if
available.  If no new events are available the ioctl() will block
waiting for the next event.  This ioctl may also be called in a
non-blocking mode by setting zc.zc_guid = ZEVENT_NONBLOCK.  In the
non-blocking case if no events are available ENOENT will be returned.
It is possible that ESHUTDOWN will be returned if the ioctl() is
called while module unloading is in progress.  And finally ENOMEM
may occur if the provided nvlist buffer is not large enough to
contain the entire event.

* ZFS_IOC_EVENTS_CLEAR
Clear are events queued by the kernel.  The kernel will keep a fairly
large number of recent events queued, use this ioctl to clear the
in kernel list.  This will effect all user space processes consuming
events.

The zpool command has been extended to use this events ABI with the
'events' subcommand.  You may run 'zpool events -v' to output a
verbose log of all recent events.  This is very similar to the
Solaris 'fmdump -ev' command with the key difference being it also
includes what would be considered sysevents under Solaris.  You
may also run in follow mode with the '-f' option.  To clear the
in kernel event queue use the '-c' option.

$ sudo cmd/zpool/zpool events -fv
TIME                        CLASS
May 13 2010 16:31:15.777711000 ereport.fs.zfs.config.sync
        class = "ereport.fs.zfs.config.sync"
        ena = 0x40982b7897700001
        detector = (embedded nvlist)
                version = 0x0
                scheme = "zfs"
                pool = 0xed976600de75dfa6
        (end detector)

        time = 0x4bec8bc3 0x2e5aed98
        pool = "zpios"
        pool_guid = 0xed976600de75dfa6
        pool_context = 0x0

While the 'zpool events' command is handy for interactive debugging
it is not expected to be the primary consumer of zevents.  This ABI
was primarily added to facilitate the addition of a user space
monitoring daemon.  This daemon would consume all events posted by
the kernel and based on the type of event perform an action.  For
most events simply forwarding them on to syslog is likely enough.
But this interface also cleanly allows for more sophisticated
actions to be taken such as generating an email for a failed drive
2010-05-14 12:40:44 -07:00
Brian Behlendorf 93b00c558f Merge branch 'linux-kernel-device' into refs/top-bases/linux-zfs-branch
Conflicts:
	module/zfs/zfs_ioctl.c
2010-05-14 11:51:27 -07:00
Brian Behlendorf 0c443b1d13 Create linux-kernel-device topic branch.
This branch contains the majority of the changes required to cleanly
intergrate with Linux style special devices (/dev/zfs).  Mainly this
means dropping all the Solaris style callbacks and replacing them
with the Linux equivilants.  Additionally, this means slightly
expanding the zfs_ioc_* functions to include a 'struct file *' to
allow the tracking of private data for each open file descriptor.
This is very helpful when you need to maintain a little information
about the open file between ioctls().
2010-05-14 11:48:06 -07:00
Brian Behlendorf 3ae75228e3 Merge branch 'linux-kernel-disk' into refs/top-bases/linux-zfs-branch
Conflicts:
	module/zfs/zfs_ioctl.c
2010-05-14 11:38:09 -07:00
Brian Behlendorf d18f100fb7 Revert zfs_ioctl.c related changes.
All the changes required to cleanly integrate with linux style
devices are being moved to their own topic branch.  It was abouti
to get to the point where too many topic branches each wanted to
tweak this code and it was getting confusing.  To simplify this
all /dev/zfs device related changes are being moved to the
linux-kernel-device topic branch.
2010-05-14 11:24:36 -07:00
Brian Behlendorf 8e870b63d0 Merge branch 'linux-have-sysevent' into refs/top-bases/linux-zfs-branch 2010-04-29 13:15:30 -07:00
Brian Behlendorf d6f1146154 Remove changes from linux-have-sysevent to prepare for topic branch removal. 2010-04-29 13:12:25 -07:00
Brian Behlendorf ab2e9b8b7f Merge branch 'linux-have-fm' into refs/top-bases/linux-zfs-branch 2010-04-29 13:08:10 -07:00
Brian Behlendorf 44ce1eb434 Remove changes from linux-have-fm to prepare for topic branch removal. 2010-04-29 13:04:35 -07:00
Brian Behlendorf e46d019df6 Merge commit 'refs/top-bases/linux-kernel-disk' into linux-kernel-disk 2010-04-29 11:01:31 -07:00
Brian Behlendorf 208e42ffe6 Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2010-04-29 11:01:23 -07:00
Brian Behlendorf ea12ca13bf Merge commit 'refs/top-bases/linux-kernel-module' into linux-kernel-module 2010-04-29 11:01:22 -07:00
Brian Behlendorf b98d7711a6 Merge commit 'refs/top-bases/linux-have-fm' into linux-have-fm 2010-04-29 11:00:54 -07:00
Brian Behlendorf 76d877a211 Merge branch 'linux-docs' into refs/top-bases/linux-zfs-branch 2010-04-29 11:00:49 -07:00
Brian Behlendorf c9ae4b9808 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-04-29 11:00:46 -07:00
Brian Behlendorf 8535236dca Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2010-04-29 11:00:45 -07:00
Brian Behlendorf 72de3a8ee1 Merge branch 'gcc-ident-pragmas' into refs/top-bases/gcc-branch 2010-04-29 11:00:44 -07:00
Brian Behlendorf 151f424dd8 Strip ident pragma from module/zfs/include/sys/fm/util.h 2010-04-29 10:57:17 -07:00
Brian Behlendorf 4d5d0f9ef5 Include FMA source and headers in build system 2010-04-29 10:55:27 -07:00
Brian Behlendorf 9c9f3480ad Merge commit 'refs/top-bases/linux-kernel-disk' into linux-kernel-disk 2010-04-29 10:42:47 -07:00
Brian Behlendorf 25aa7e01e3 Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2010-04-29 10:42:40 -07:00
Brian Behlendorf 86705eb3e0 Merge commit 'refs/top-bases/linux-kernel-module' into linux-kernel-module 2010-04-29 10:42:39 -07:00
Brian Behlendorf 9c2946732d Merge commit 'refs/top-bases/linux-have-fm' into linux-have-fm 2010-04-29 10:42:09 -07:00
Brian Behlendorf 91b582d4a1 Merge branch 'linux-docs' into refs/top-bases/linux-zfs-branch 2010-04-29 10:42:02 -07:00
Brian Behlendorf 1368594e11 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-04-29 10:41:59 -07:00
Brian Behlendorf 34d62da9bc Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2010-04-29 10:41:18 -07:00
Brian Behlendorf d91c81c4df Merge commit 'refs/top-bases/gcc-ident-pragmas' into gcc-ident-pragmas 2010-04-29 10:41:09 -07:00
Brian Behlendorf 8c24800b72 Merge branch 'gcc-c90' into refs/top-bases/gcc-branch 2010-04-29 10:40:36 -07:00
Brian Behlendorf 4aad8d3244 Merge commit 'refs/top-bases/gcc-c90' into gcc-c90 2010-04-29 10:40:34 -07:00
Brian Behlendorf fa42225a3d Add Solaris FMA style support 2010-04-29 10:37:15 -07:00
Brian Behlendorf a608242d71 Merge branch 'linux-kernel-disk' into refs/top-bases/linux-zfs-branch 2010-03-22 16:56:41 -07:00
Brian Behlendorf 5b14d2ab2f Move zfs_config.h include to command line -include
Remove the few places in the code where zfs_config.h is included.
It is now added to the gcc compile line to ensure the config results
2010-03-22 16:50:58 -07:00
Brian Behlendorf f04c01c945 Merge branch 'linux-kernel-mem' into refs/top-bases/linux-zfs-branch 2010-03-09 13:53:21 -08:00
Ricardo M. Correia ba0a56bb2a Fix struct ht_lock padding in arc.c.
This was leading to a compilation error because in Linux, sizeof
(kmutex_t) can be larger than 64 in some circumstances (e.g. with
debugging and lockdep enabled).

The code was previously fixed to align the structure to 256 bytes,
but a better fix is to align it to the next multiple of 64 bytes.
2010-03-09 13:49:36 -08:00
Brian Behlendorf e5fd6fb97f Merge commit 'refs/top-bases/linux-kernel-mem' into linux-kernel-mem 2010-03-09 13:25:16 -08:00
Brian Behlendorf f134f893c1 Merge commit 'refs/top-bases/linux-kernel-disk' into linux-kernel-disk 2010-03-09 13:25:09 -08:00
Brian Behlendorf c0485b7731 Merge commit 'refs/top-bases/linux-have-sysevent' into linux-have-sysevent 2010-03-09 13:25:02 -08:00
Brian Behlendorf 759c1e4f99 Merge commit 'refs/top-bases/linux-kernel-module' into linux-kernel-module 2010-03-09 13:25:02 -08:00
Brian Behlendorf 89f4f4a695 Merge commit 'refs/top-bases/linux-have-fm' into linux-have-fm 2010-03-09 13:24:37 -08:00
Brian Behlendorf 6c0502f5a6 Merge branch 'linux-docs' into refs/top-bases/linux-zfs-branch 2010-03-09 13:24:32 -08:00
Brian Behlendorf 19eef8ad39 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-03-09 13:24:30 -08:00
Brian Behlendorf 9fa502c50b Merge branch 'feature-branch' into refs/top-bases/zfs-branch 2010-03-09 13:24:29 -08:00
Brian Behlendorf e218fd13e8 Merge commit 'refs/top-bases/feature-branch' into feature-branch 2010-03-09 13:24:28 -08:00
Brian Behlendorf f2ab1fea36 Merge branch 'feature-pthreads' into refs/top-bases/feature-branch 2010-03-09 13:24:27 -08:00