Open Stack

Hello Requirements Team,

The Cinder team recently became aware of a potential data-loss bug [0] 
that has been fixed in os-brick master [1] and backported to os-brick 
stable/wallaby [2].  We've proposed a release of os-brick 4.4.0 from 
stable/wallaby [3] and are petitioning for an RFE to include 4.4.0 in 
the wallaby release.

We have three jobs running tempest with os-brick source in master that 
have passed with [1]: os-brick-src-devstack-plugin-ceph [4], 
os-brick-src-tempest-lvm-lio-barbican [5],and os-brick-src-tempest-nfs 
[6].  The difference between os-brick master (at the time the tests were 
run) and stable/wallaby since the 4.3.0 tag is as follows:

master:
d4205bd   3 days ago  iSCSI: Fix flushing after multipath cfg change 
(Gorka Eguileor)
0e63fe8  2 weeks ago  Merge "RBD: catch read exceptions prior to 
modifying offset" (Zuul)
28545c7 4 months ago  RBD: catch read exceptions prior to modifying 
offset (Jon Bernard)
99b2c60  2 weeks ago  Merge "Dropping explicit unicode literal" (Zuul)
7cfdb76  6 weeks ago  Dropping explicit unicode literal (tushargite96)
9afa1a0  3 weeks ago  Add Python3 xena unit tests (OpenStack Release Bot)
ab57392  3 weeks ago  Update master for stable/wallaby (OpenStack 
Release Bot)
91a1cca  3 weeks ago  (tag: 4.3.0) Merge "NVMeOF connector driver 
connection information compatibility fix" (Zuul)

stable/wallaby:
f86944b   3 days ago  Add release note prelude for os-brick 4.4.0 (Brian 
Rosmaita)
c70d70b   3 days ago  iSCSI: Fix flushing after multipath cfg change 
(Gorka Eguileor)
6649b8d  3 weeks ago  Update TOX_CONSTRAINTS_FILE for stable/wallaby 
(OpenStack Release Bot)
f3f93dc  3 weeks ago  Update .gitreview for stable/wallaby (OpenStack 
Release Bot)
91a1cca  3 weeks ago  (tag: 4.3.0) Merge "NVMeOF connector driver 
connection information compatibility fix" (Zuul)

This gives us very high confidence that the results of the tests run 
against master also apply to stable/wallaby at f86944b.

Thank you for considering this request.

(I've included Nova here because the bug occurs when the configuration 
option that enables multipath connections on a compute is changed while 
volumes are attached, so if this RFE is approved, nova might want to 
raise the minimum version of os-brick in wallaby to 4.4.0.)


[0] https://launchpad.net/bugs/1921381
[1] https://review.opendev.org/c/openstack/os-brick/+/782992
[2] https://review.opendev.org/c/openstack/os-brick/+/783207
[3] https://review.opendev.org/c/openstack/releases/+/783641
[4] 
https://zuul.opendev.org/t/openstack/build/30a103668e4c4a8cb6f1ef907ef3edcb
[5] 
https://zuul.opendev.org/t/openstack/build/bb11eef737d34c41bb4a52f8433850b0
[6] 
https://zuul.opendev.org/t/openstack/build/3ad3359ca712432d9ef4261d72c787fa