Hi,
recently we have been working a lot with OpenStack and had to
fix many bugs in drbd-9.0 to make it work smooth in that context.
There is still more to do, but it is impressive to see it running
with with 500 resources, each spanning 4 nodes, where 3 have storage.
Since OpenStack resizes volumes in the process of creating a
volume for a running instance we had to invest a lot of effort to
make resizing reliable. From now on a resize operation in DRBD9
is a two-phase commit.
A lot of bugs where fixed, a number of long known ones, like two-phase
commit endless abort loops. I suggest every user of drbd-9 to upgrade
to 9.0.4 as soon as possible.
drbd
9.0.4-1 (api:genl2/proto:86-112/transport:14)
--------
* fix enforcement of single-primary constraint; a regression of 9.0.3
* fix resetting of ko_count
* fix the sometimes seen two-phase-commit ABORT endless loop
* fix a possible sleep in atomic with no longer taking locks in _destroy
functions
* fix two-phase-commits when the nodes build a loop; correctly handle
them where the two "flows" merge, both for PREPARE and COMMIT
* fix the resync after online grow
* fix a refcount leak in case a user-process terminates while doing
a .dumpit operation (drbdsetup state; drbdsetup show; drbdsetup events2...)
The damage of the bug was a resouce that never goes away
* fix a multi-node issue in comparing the GIs
* fix data-structure handling for RCU consumers (adding connections)
* reimplement online resize as two-phase-commit operation; the old online resize
code could get into packet-loop storms, had many problems; works when all nodes
support protocol 112
* enable kref-debug code by default
* enable parallel_ops for gennetlink operations; that is a workaround for
a "sleep while atomic" on kernels 4.3 and upwards; it is a performance
improvement for all; especially users of Open vSwitch will rejoice
* avoid "initial packet S crossed"
* a number of fixes to speed up establishing of connections
* remove some home made mutex deadlocks
(auto promote - down; del_resource - new_path)
http://www.drbd.org/download/drbd/9.0/drbd-9.0.4-1.tar.gz
http://git.drbd.org/drbd-9.0.git/tag/drbd-9.0.4
drbd-utils
8.9.8
--------
* fix a lot of regressions from allowing to pass command options
on the drbdadm adjust commandline. (filtering of backend options)
* wait-for-* return success if there are no peers
* naturally align 64 bit attributes in gennetlink packets
* improve systemd unit-file to wait for network-online.target
* return success for a resize to the same size even if a resync
does not allow as resize at this point in time
* improve sh-nop with --config-to-test with new --config-to-exclude
and correct exit code
* implemented --json for drbdsetup status
http://www.drbd.org/download/drbd/utils/drbd-utils-8.9.8.tar.gz
http://git.drbd.org/drbd-utils.git/tag/refs/tags/v8.9.8
cheers!
_______________________________________________
drbd-announce mailing list
drbd-announce@lists.linbit.com
http://lists.linbit.com/mailman/listinfo/drbd-announce
recently we have been working a lot with OpenStack and had to
fix many bugs in drbd-9.0 to make it work smooth in that context.
There is still more to do, but it is impressive to see it running
with with 500 resources, each spanning 4 nodes, where 3 have storage.
Since OpenStack resizes volumes in the process of creating a
volume for a running instance we had to invest a lot of effort to
make resizing reliable. From now on a resize operation in DRBD9
is a two-phase commit.
A lot of bugs where fixed, a number of long known ones, like two-phase
commit endless abort loops. I suggest every user of drbd-9 to upgrade
to 9.0.4 as soon as possible.
drbd
9.0.4-1 (api:genl2/proto:86-112/transport:14)
--------
* fix enforcement of single-primary constraint; a regression of 9.0.3
* fix resetting of ko_count
* fix the sometimes seen two-phase-commit ABORT endless loop
* fix a possible sleep in atomic with no longer taking locks in _destroy
functions
* fix two-phase-commits when the nodes build a loop; correctly handle
them where the two "flows" merge, both for PREPARE and COMMIT
* fix the resync after online grow
* fix a refcount leak in case a user-process terminates while doing
a .dumpit operation (drbdsetup state; drbdsetup show; drbdsetup events2...)
The damage of the bug was a resouce that never goes away
* fix a multi-node issue in comparing the GIs
* fix data-structure handling for RCU consumers (adding connections)
* reimplement online resize as two-phase-commit operation; the old online resize
code could get into packet-loop storms, had many problems; works when all nodes
support protocol 112
* enable kref-debug code by default
* enable parallel_ops for gennetlink operations; that is a workaround for
a "sleep while atomic" on kernels 4.3 and upwards; it is a performance
improvement for all; especially users of Open vSwitch will rejoice
* avoid "initial packet S crossed"
* a number of fixes to speed up establishing of connections
* remove some home made mutex deadlocks
(auto promote - down; del_resource - new_path)
http://www.drbd.org/download/drbd/9.0/drbd-9.0.4-1.tar.gz
http://git.drbd.org/drbd-9.0.git/tag/drbd-9.0.4
drbd-utils
8.9.8
--------
* fix a lot of regressions from allowing to pass command options
on the drbdadm adjust commandline. (filtering of backend options)
* wait-for-* return success if there are no peers
* naturally align 64 bit attributes in gennetlink packets
* improve systemd unit-file to wait for network-online.target
* return success for a resize to the same size even if a resync
does not allow as resize at this point in time
* improve sh-nop with --config-to-test with new --config-to-exclude
and correct exit code
* implemented --json for drbdsetup status
http://www.drbd.org/download/drbd/utils/drbd-utils-8.9.8.tar.gz
http://git.drbd.org/drbd-utils.git/tag/refs/tags/v8.9.8
cheers!
_______________________________________________
drbd-announce mailing list
drbd-announce@lists.linbit.com
http://lists.linbit.com/mailman/listinfo/drbd-announce