Hello DRBD-users,
I am preparing another double release. 9.2.17-rc.1 brings a bit more
bug-fixes as in the last development cycles, but in nature they are
following the trend we see since quite some time. It is the unusual
corner cases.
The 9.3.1-rc.1 brings fundamental modernization to how DRBD handles
I/O. From now on, DRBD can allocate compound pages from the kernel as
I/O buffers. When you make large I/O requests or streaming accesses,
that can speed things up.
This is a release candidate. Please help test it. If everything goes by
plan, I will do the final release in one week.
9.3.1-rc.1 (api:genl2/proto:86-101,118-124/transport:21)
--------
* Use compound pages to optimize large I/O performance
* New option for setting the discard granularity exposed on
diskless nodes
* Add per-peer_device tiebreaker config flag for quorum
* Fix compat-8.4 /proc/drbd output for connected resources
* All fixes from 9.2.17
- Fix a kernel crash triggered by a crafted/invalid netlink message
- Fix a crash when resyncing with a peer supporting proto 121,
e.g. drbd-9.1.23
- Fixed two corner case regressions regarding bitmap lifetime
(introduced with 9.2.16)
- Add a static analyzer that checks for correctly handling bitmap
object lifetime; it identified 6 bugs
- Correctly request BLK_FEAT_STABLE_WRITES from the kernel; Kernels
side changes lead to this queue flag not being active
- Fix lb-tcp to not corrupt data when it reassembles a data chunk, it
split for sending over multiple paths in parallel
- Add a special case to ensure LINSTOR re-provisioned nodes with thin
volumes get the necessary incremental resync
- Always do a two-phase-commit for attach, closes a race that could
lead to an inconsistent repl states
- Skip unnecessary resync when a missed end-of-resync has 0 bits;
before that fix, DRBD could end up in inconsistent repl states
- Fix a case where a send error was ignored on congested connections
- Make detection of missed end-of-resync symmetric; the bug led to
inconsistent repl states
- Make the RDMA transport compatible with RXE (software RoCE),
and some mainly performance-related fixes
https://pkg.linbit.com//downloads/drbd/9/drbd-9.3.1-rc.1.tar.gz
https://pkg.linbit.com//downloads/drbd/9/drbd-9.2.17-rc.1.tar.gz
cheers,
Philipp