[DRBD-user] WinDRBD 1.0.0-rc9 released

Johannes Thoma johannes at johannesthoma.com
Mon Dec 14 14:35:09 CET 2020

Dear DRBD and WinDRBD users,

We've just released a new release canidate version of WinDRBD: as always
the installer of WinDRBD 1.0.0-rc9 can be downloaded from:


Below is the abstract from the WHATSNEW.md file: mainly stability fixes in corner cases but
also performance tuning (when SyncTarget syncing is about 5 times faster now).

Thank you for improving WinDRBD by reporting bugs (2 contributors on the net have
discovered and reported bugs for this release),

Best wishes,

- Johannes

What's new in version 1.0.0-rc9

Use device ejection API on drbdadm secondary (or down). This should
solve a BSOD on drbdadm secondary a client had.

Force open counts to 0 on drbdadm secondary (or down). This should
solve a handle leak (peer cannot be promoted to Primary) a client

Updated drbd-utils shipped to 9.15.0 (was 9.12.0). Amongst other
things this makes the disconnected user mode helper work.

Use big pages for receiving sync packets (when sync target). This speeds
up sync by a factor 5 when WinDRBD is SyncTarget.

Fixed disconnect while sync bug: On disconnect wait until all
bios are completed.

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