Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi,
In the last months the focus on the kernel side was to get
it into shape to form a usable base for drbdmanage and
the OpenStack cinder driver for drbd.
It is time to share the results of this work with a wider
audience.
We are testing here mainly on CentOS 6 VMs. Mirroring
between up to 8 nodes works usually. Usually no kernel crashes,
no refcount errors (module unload works), no protocol errors,
resyncs run in the right direction and do the right blocks.
Known issues:
* It breaks a lot on pre-empt kernels. (Usual distros not affected)
* Concurrent drbdadm down seems to trigger issued
* Still possible to deadlock in the write path on a SyncTarget/Primary
node. Though does not happen frequently.
The fitting drbdmanage will be announced in a few hours
today.
Please note that drbd-utils-8.9.2rc2 has to be used with the
drbd-9.0.0rc1 kernel driver. Meta data format for 9.0 was changed
again. I.e. meta-data created by older tools are not compatible
with the 9.0.0rc1 kernel driver.
drbd
9.0.0rc1 (api:genl1/proto:86-110)
--------
* some work on drbd-9.0 to drbd-8.4 compatibility
* many bug fixes to all areas of the new code; especially the
the resync procedure, which is a lot more complex than it's
8.4 ancestor
* a transport abstraction layer that will allow for alternative
transports besides TCP. Planed are RDMA/Infiniband and SCTP
http://oss.linbit.com/drbd/9.0/drbd-9.0.0rc1.tar.gz
http://git.drbd.org/gitweb.cgi?p=drbd-9.0.git;a=tag;h=refs/tags/drbd-9.0.0rc1
drbd-utils
8.9.2rc2
--------
* drbdadm 9: Log errors to syslog if stderr is not available
* init script: fixes for stacked resources
* fix regression corner cases in bitmap size calculation
* allow create-md to initialize peer-max-bio-size to 1M
* make transport selectable
* fix aggregating drbdsetup / drbdmeta exit statii
* some documentation fixes (content and build)
* added direct-connect command
* incompatible drbd-9 metadata format changeuse: node_id as index for
peer_md instead of the bitmap_index
* drbdadm/meta/usage_cnt: ensure output is visible
* drbdsetup: fix arguments for all commands expecting a peer_device
* exit codes: redefine E_USAGE to 1 (not 3)
* some build changes
* init script: on start, first try to load the module
* drbdsetup events2: Improve how timestamps are assigned
8.9.2rc1
--------
* udev rules (symlinks in /dev/by-res and by-disk) got fixed
* Fixed upper limit for drbd-8.4 activity log entries
* many fixes to drbdadm adjust and proxy commands for drbd-9
* rhcs_fence: Do not invoke fence agents in parallel, rewrite in bash
* drbdsetup events2 is now also available in drbd-8.4 (backported from drbd-9)
* reorganized the repository have common code for drbd-9, drbd-8.4
and drbd-8.3 only once
* Fix drbd.ocf for resources without volume 0
http://oss.linbit.com/drbd/drbd-utils-8.9.2rc2.tar.gz
http://git.drbd.org/gitweb.cgi?p=drbd-utils.git;a=tag;h=refs/tags/v8.9.2rc2
Best regards,
phil