Hello DRBD-user,
Today I am announcing the drbd-9.1.14 and drbd-9.2.3 releases. In this
eight-week development cycle, we fixed interesting issues in different
places.
An area of attention was the "resync-after" functionality. This
feature allows you to serialize resyncs of resources. That is
interesting when you have many resources needing to resync when a node
returns online.
After rc.1 we sneaked in two minor changes on the drbd-9.1 branch. One
change is how a timeout is derived, which only affects users that use
non-standard timeout settings.
The second one simplifies the code and potentially fixes a bug of which
we have seen a single occurrence so far.
On the 9.2 branch, we needed to fix a network protocol compatibility
with drbd-8.4.
9.1.14 (api:genl2/proto:110-121/transport:17)
--------
* fix a race with concurrent promotion and demotion, which can
lead to an unexpected "split-brain" later on
* fix a specific case where promotion was allowed where it should not
* fix a race condition between auto-promote and a second two-phase
commit that can lead to a DRBD thread locking up in an endless loop
* fix several bugs with "resync-after":
- missing resync-resume when minor numbers run in opposite
direction as the resync-after dependencies
- a race that might lead to an OOPS in add_timer()
* fix an OOPS when reading from in_flight_summary in debugfs
* fix a race that might lead to an endless loop of printing
"postponing start_resync" while starting a resync
* fix diskless node with a diskfull with a 4KiB backend
* simplify remembering two-pc parents, maybe fixing a one-time-seen bug
* derive abort_local_transaction timeout from ping-timeout
9.2.3 (api:genl2/proto:110-122/transport:18)
--------
* improve matching ACKs to in-memory request objects;
inexact matches were a source of unexpected connection losses
* merge changes from drbd-9.1.14
- fix a race with concurrent promotion and demotion, which can
lead to an unexpected "split-brain" later on
- fix a specific case where promotion was allowed where it should not
- fix a race condition between auto-promote and a second two-phase
commit that can lead to a DRBD thread locking up in an endless loop
- fix several bugs with "resync-after":
- missing resync-resume when minor numbers run in opposite
direction as the resync-after dependencies
- a race that might lead to an OOPS in add_timer()
- fix an OOPS when reading from in_flight_summary in debugfs
- fix a race that might lead to an endless loop of printing
"postponing start_resync" while starting a resync
- fix diskless node with a diskfull with a 4KiB backend
- simplify remembering two-pc parents, maybe fixing a one-time-seen bug
- derive abort_local_transaction timeout from ping-timeout
https://pkg.linbit.com/downloads/drbd/9/drbd-9.1.14.tar.gz
https://github.com/LINBIT/drbd/commit/df55dfb7a93484b7d7eb0c4deac62d887cfcbf67
https://pkg.linbit.com/downloads/drbd/9/drbd-9.2.3.tar.gz
https://github.com/LINBIT/drbd/commit/c142ca1280c41aee1330b980544ef276330ff6ef
Philipp
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