Bug 1987176

Summary:	Blivet should not set chunk size for RAID1
Product:	Red Hat Enterprise Linux 9	Reporter:	Vojtech Trefny <vtrefny>
Component:	python-blivet	Assignee:	Vojtech Trefny <vtrefny>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Release Test Team <release-test-team-automation>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	9.0	CC:	jstodola, nhosoi, release-test-team-automation, rmeggins, rvykydal
Target Milestone:	beta	Keywords:	Triaged
Target Release:	---	Flags:	pm-rhel: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	python-blivet-3.4.0-4.el9	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:	1987170	Environment:
Last Closed:	2021-12-07 21:24:13 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1987170
Bug Blocks:	1986630

Description Vojtech Trefny 2021-07-29 07:03:10 UTC

+++ This bug was initially created as a clone of Bug #1987170 +++

Blivet currently sets default chunk size (512 KiB) for all raid levels. RAID 1 doesn't use chunks and when creating a RAID 1 array using mdadm the --chunk option used to be silently ignored but starting with mdadm-4.2-rc1_4 this results in an error and the array is not created so we need to stop setting chunk size when creating RAID 1 arrays.

```
# mdadm --create --run md127 --chunk 512 --level raid1 --raid-devices 2 /dev/sdb1 /dev/sdb2 --metadata=1.0                         
mdadm: specifying chunk size is forbidden for this level
```

Comment 2 Radek Vykydal 2021-08-11 11:26:05 UTC

Following steps from comment #1

Reproduced on RHEL-9.0.0-20210730.d.3 with python3-blivet-3.4.0-3.el9:                         
                                                                                               
INFO:program:Running [45] mdadm --create /dev/md/root --run --level=raid1 --raid-devices=2 --metadata=default --bitmap=internal --chunk=512 /dev/vda1 /dev/vdb1 ...

Tested on RHEL-9.0.0-20210809.d.2 with python3-blivet-3.4.0-4.el9:                             

INFO:program:Running [71] mdadm --create /dev/md/root --run --level=raid1 --raid-devices=2 --metadata=default --bitmap=internal /dev/vda1 /dev/vdb1 ...

Comment 6 Jan Stodola 2021-08-18 08:14:24 UTC

python3-blivet-3.4.0-6.el9 is present in nightly compose RHEL-9.0.0-20210817.8.

Moving to VERIFIED.