This is a release candidate. Please help testing,
and let us know of any problems or regressions, performance or otherwise.
Thanks,
Lars
Git:
http://git.linbit.com/drbd-8.4.git/shortlog/refs/tags/drbd-8.4.5rc1
Tarballs:
http://oss.linbit.com/drbd/8.4/drbd-8.4.5rc1.tar.gz
http://oss.linbit.com/drbd/drbd-utils-8.9.0rc1.tar.gz
=======================================================================
With DRBD module version 8.4.5, we split out the management tools
into their own repository at http://git.linbit.com/drbd-utils.git
(tarball at http://oss.linbit.com/drbd)
That started out as "drbd-utils version 8.9.0",
and provides compatible drbdadm, drbdsetup and drbdmeta tools
for DRBD module versions 8.3, 8.4 and 9 (prereleases as of now).
Again: to manage DRBD 8.4.5 kernel modules and above,
you want drbd-utils >= 8.9.0 from above url.
=======================================================================
Other than that, the module has received a number fixes
both for regressions and long standing corner case bugs
or hard to trigger races.
We have one new configuration option,
csums-after-crash-only
which goes along with csums-alg,
and changes the behavior of checksum-based resync
to use checksums only for the first resync after a primary crash,
where we will resync many blocks "just in case",
and many of those will actually be in-sync already.
And we have a new DRBD debugfs hierarchy:
/sys/kernel/debug/drbd/
./version
./minors/<minor> -> ../resources/<name>/volumes/<vnr>
./resources/<name>/in_flight_summary
./resources/<name>/connections/peer/oldest_requests
./resources/<name>/connections/peer/callback_history
./resources/<name>/volumes/<vnr>/data_gen_id
./resources/<name>/volumes/<vnr>/resync_extents
./resources/<name>/volumes/<vnr>/act_log_extents
./resources/<name>/volumes/<vnr>/oldest_requests
Though information in there is probably only interesting
to wizard-level problem diagnosis or advanced policy scripting.
If you want to know what's in there, look into drbd_debugfs.c ;-)
Some of this used to be available via /sys/block/drbdXYZ/drbd/,
which has been dropped now.
Changes since 8.4.4
* fix potential BUG_ON in mempool_alloc for older kernels (<2.6.23)
* fix cornercase of resync finished detection
* fix drbd_ldev_destroy to run exactly once and in worker context
* fix spurious detach/disconnect: don't announce WRITE_SAME
* fix NULL pointer deref in blk_add_request_payload
(DISCARD/TRIM handling in sd)
* fix regression: potential NULL pointer dereference
* fix regression: potential list corruption
* fix regression: potential deadlock in adm functions (drbdsetup)
* fix race stopping the worker thread
* new debugfs presence expose oldest requests and other details
* userspace moved to own repository
* linux 3.13 and 3.14 compatibility
* improve adaptive resync controler
* reduce bitmap IO during resync
* allow write-ordering policy to be bumped up again
* trigger tcp_flush_pending_frames() for PING/PING_ACK
--
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com
DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
_______________________________________________
drbd-announce mailing list
drbd-announce@lists.linbit.com
http://lists.linbit.com/mailman/listinfo/drbd-announce
and let us know of any problems or regressions, performance or otherwise.
Thanks,
Lars
Git:
http://git.linbit.com/drbd-8.4.git/shortlog/refs/tags/drbd-8.4.5rc1
Tarballs:
http://oss.linbit.com/drbd/8.4/drbd-8.4.5rc1.tar.gz
http://oss.linbit.com/drbd/drbd-utils-8.9.0rc1.tar.gz
=======================================================================
With DRBD module version 8.4.5, we split out the management tools
into their own repository at http://git.linbit.com/drbd-utils.git
(tarball at http://oss.linbit.com/drbd)
That started out as "drbd-utils version 8.9.0",
and provides compatible drbdadm, drbdsetup and drbdmeta tools
for DRBD module versions 8.3, 8.4 and 9 (prereleases as of now).
Again: to manage DRBD 8.4.5 kernel modules and above,
you want drbd-utils >= 8.9.0 from above url.
=======================================================================
Other than that, the module has received a number fixes
both for regressions and long standing corner case bugs
or hard to trigger races.
We have one new configuration option,
csums-after-crash-only
which goes along with csums-alg,
and changes the behavior of checksum-based resync
to use checksums only for the first resync after a primary crash,
where we will resync many blocks "just in case",
and many of those will actually be in-sync already.
And we have a new DRBD debugfs hierarchy:
/sys/kernel/debug/drbd/
./version
./minors/<minor> -> ../resources/<name>/volumes/<vnr>
./resources/<name>/in_flight_summary
./resources/<name>/connections/peer/oldest_requests
./resources/<name>/connections/peer/callback_history
./resources/<name>/volumes/<vnr>/data_gen_id
./resources/<name>/volumes/<vnr>/resync_extents
./resources/<name>/volumes/<vnr>/act_log_extents
./resources/<name>/volumes/<vnr>/oldest_requests
Though information in there is probably only interesting
to wizard-level problem diagnosis or advanced policy scripting.
If you want to know what's in there, look into drbd_debugfs.c ;-)
Some of this used to be available via /sys/block/drbdXYZ/drbd/,
which has been dropped now.
Changes since 8.4.4
* fix potential BUG_ON in mempool_alloc for older kernels (<2.6.23)
* fix cornercase of resync finished detection
* fix drbd_ldev_destroy to run exactly once and in worker context
* fix spurious detach/disconnect: don't announce WRITE_SAME
* fix NULL pointer deref in blk_add_request_payload
(DISCARD/TRIM handling in sd)
* fix regression: potential NULL pointer dereference
* fix regression: potential list corruption
* fix regression: potential deadlock in adm functions (drbdsetup)
* fix race stopping the worker thread
* new debugfs presence expose oldest requests and other details
* userspace moved to own repository
* linux 3.13 and 3.14 compatibility
* improve adaptive resync controler
* reduce bitmap IO during resync
* allow write-ordering policy to be bumped up again
* trigger tcp_flush_pending_frames() for PING/PING_ACK
--
: Lars Ellenberg
: LINBIT | Your Way to High Availability
: DRBD/HA support and consulting http://www.linbit.com
DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
_______________________________________________
drbd-announce mailing list
drbd-announce@lists.linbit.com
http://lists.linbit.com/mailman/listinfo/drbd-announce