Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1987176

Summary: Blivet should not set chunk size for RAID1
Product: Red Hat Enterprise Linux 9 Reporter: Vojtech Trefny <vtrefny>
Component: python-blivetAssignee: Vojtech Trefny <vtrefny>
Status: CLOSED CURRENTRELEASE QA Contact: Release Test Team <release-test-team-automation>
Severity: high Docs Contact:
Priority: unspecified    
Version: 9.0CC: jstodola, nhosoi, release-test-team-automation, rmeggins, rvykydal
Target Milestone: betaKeywords: 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.