Commit Graph

579 Commits

Author SHA1 Message Date
Brian Behlendorf 885089decd Merge commit 'refs/top-bases/linux-events' into linux-events 2010-05-28 12:42:57 -07:00
Brian Behlendorf 06da6ccf97 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-05-28 12:42:30 -07:00
Brian Behlendorf 818eafca5b Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2010-05-28 12:42:30 -07:00
Brian Behlendorf c91169c7c5 Merge branch 'gcc-shadow' into refs/top-bases/gcc-branch
Conflicts:
	lib/libzfs/libzfs_util.c
2010-05-28 12:42:27 -07:00
Brian Behlendorf fb72c6ef81 Revert gcc-shadow using -Wno-shadow I can live with
While I would rather fix all the instances where something is shadowed
it complicates tracking the OpenSolaris code where they either don't
seem to care or have different conflicts.  Anyway, this ends up being
more simply gratutous change than I care for.
2010-05-28 12:34:45 -07:00
Brian Behlendorf d5fbdc7aad Merge commit 'refs/top-bases/linux-events' into linux-events 2010-05-28 10:16:41 -07:00
Brian Behlendorf 3450d1f3b5 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-05-28 10:14:43 -07:00
Brian Behlendorf af051f1250 Merge branch 'fix-branch' into refs/top-bases/zfs-branch 2010-05-28 10:14:43 -07:00
Brian Behlendorf 157df8338c Merge branch 'fix-dsl_pool_t' into refs/top-bases/fix-branch 2010-05-28 10:14:42 -07:00
Brian Behlendorf 9eec97e163 Revert fix-dsl_pool_t fixed upstream 2010-05-28 10:08:02 -07:00
Brian Behlendorf 54f70fc689 Merge commit 'refs/top-bases/linux-events' into linux-events 2010-05-28 10:02:44 -07:00
Brian Behlendorf c2c3358a6f Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-05-28 10:00:44 -07:00
Brian Behlendorf 11510b3513 Merge branch 'fix-branch' into refs/top-bases/zfs-branch 2010-05-28 10:00:44 -07:00
Brian Behlendorf 396fb1e235 Merge branch 'fix-taskq' into refs/top-bases/fix-branch 2010-05-28 10:00:43 -07:00
Brian Behlendorf 11a9bfc7f8 Revert fix-taskq changes reevaluate after update. 2010-05-28 09:54:03 -07:00
Brian Behlendorf db0b37a11d Merge commit 'refs/top-bases/linux-events' into linux-events 2010-05-27 17:04:16 -07:00
Brian Behlendorf 2fbe461b55 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-05-27 17:02:15 -07:00
Brian Behlendorf a7dcb2247a Merge branch 'fix-branch' into refs/top-bases/zfs-branch 2010-05-27 17:02:14 -07:00
Brian Behlendorf 146ded4db2 Merge branch 'fix-clock-wrap' into refs/top-bases/fix-branch 2010-05-27 17:02:13 -07:00
Brian Behlendorf db069704ed Revert fix-clock-wrap fixed upstream
This was more or less fixed upstream.  Instead of directly accessing
lbolt they now use ddi_get_lbolt() which we can have do the right
thing is the SPL so we don't need to carry this patch.
2010-05-27 16:54:23 -07:00
Brian Behlendorf f2d0cefacc Merge commit 'refs/top-bases/linux-events' into linux-events 2010-05-27 14:15:38 -07:00
Brian Behlendorf b265da19f0 Merge branch 'feature-branch' into refs/top-bases/zfs-branch 2010-05-27 14:15:08 -07:00
Brian Behlendorf 3a7896c8d2 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-05-27 14:15:08 -07:00
Brian Behlendorf b754295dec Revert feature-zap-cursor-to-key feature upstream
We can drop this feature and we will pick up the lastest version
during the b141 update.
2010-05-27 14:12:59 -07:00
Brian Behlendorf fd3ff8f53e Merge commit 'refs/top-bases/linux-events' into linux-events 2010-05-27 13:52:09 -07:00
Brian Behlendorf d8e5eb56b8 Merge branch 'feature-branch' into refs/top-bases/zfs-branch 2010-05-27 13:42:00 -07:00
Brian Behlendorf 028e42b692 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-05-27 13:42:00 -07:00
Brian Behlendorf 1dc4235011 Merge branch 'feature-pthreads' into refs/top-bases/feature-branch 2010-05-27 13:40:14 -07:00
Brian Behlendorf 1e32b3c781 Revert feature-commit-cb feature upstream
We can drop this feature and we will pick up the lastest version
during the b141 update.
2010-05-27 13:39:17 -07:00
Brian Behlendorf 3bd93e7103 Merge branch 'feature-pthreads' into refs/top-bases/feature-branch 2010-05-27 13:25:20 -07:00
Brian Behlendorf 099e8e493a Remove feature-pthreads prior to b141 update.
The pthreads change will need to be reworked and reapplied.
This will be easier to do from scratch rather than sort out
the merge.
2010-05-27 13:23:58 -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 98660aec20 Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-04-29 12:32:01 -07:00
Brian Behlendorf aa4a91aef5 Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2010-04-29 12:32:00 -07:00
Brian Behlendorf 354bebb795 Merge branch 'gcc-ident-pragmas' into refs/top-bases/gcc-branch 2010-04-29 12:31:59 -07:00
Brian Behlendorf 89154c98f9 Update build system to include nvpair_alloc_fixed.c. 2010-04-29 12:24:25 -07:00
Brian Behlendorf f26fce7b17 Strip ident pragma from module/nvpair/nvpair_alloc_fixed.c 2010-04-29 12:23:12 -07:00
Brian Behlendorf 66ba722b0a Merge commit 'refs/top-bases/zfs-branch' into zfs-branch 2010-04-29 12:04:36 -07:00
Brian Behlendorf f3017eccb7 Merge commit 'refs/top-bases/feature-pthreads' into feature-pthreads 2010-04-29 12:04:33 -07:00
Brian Behlendorf 7a062682fb Merge commit 'refs/top-bases/feature-commit-cb' into feature-commit-cb 2010-04-29 12:04:32 -07:00
Brian Behlendorf 9c10b70375 Merge branch 'feature-zap-cursor-to-key' into refs/top-bases/feature-branch 2010-04-29 12:04:31 -07:00
Brian Behlendorf 9d8e4f07ff Merge commit 'refs/top-bases/feature-zap-cursor-to-key' into feature-zap-cursor-to-key 2010-04-29 12:04:30 -07:00
Brian Behlendorf cf4e5324e9 Merge commit 'refs/top-bases/fix-taskq' into fix-taskq 2010-04-29 12:04:18 -07:00
Brian Behlendorf 05b4f88b78 Merge commit 'refs/top-bases/fix-dsl_pool_t' into fix-dsl_pool_t 2010-04-29 12:04:07 -07:00
Brian Behlendorf 8273e838de Merge branch 'fix-clock-wrap' into refs/top-bases/fix-branch 2010-04-29 12:04:03 -07:00
Brian Behlendorf 78559a049a Merge commit 'refs/top-bases/fix-clock-wrap' into fix-clock-wrap 2010-04-29 12:04:02 -07:00
Brian Behlendorf e7edc55fff Merge branch 'gcc-branch' into refs/top-bases/zfs-branch 2010-04-29 12:03:58 -07:00
Brian Behlendorf ff1883382e Merge commit 'refs/top-bases/gcc-ident-pragmas' into gcc-ident-pragmas 2010-04-29 12:03:50 -07:00
Brian Behlendorf 6edb312559 Merge commit 'refs/top-bases/gcc-shadow' into gcc-shadow 2010-04-29 12:03:45 -07:00
Brian Behlendorf 8279f80885 Merge branch 'gcc-c90' into refs/top-bases/gcc-branch 2010-04-29 12:03:18 -07:00