Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.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 2141961

Summary: RFE for the storage system role to support configuring the stripe size for RAID LVM volumes
Product: Red Hat Enterprise Linux 8 Reporter: Csaba Daradics <csaba.daradics>
Component: rhel-system-rolesAssignee: Vojtech Trefny <vtrefny>
Status: CLOSED ERRATA QA Contact: Fine Fan <ffan>
Severity: unspecified Docs Contact: Apurva Bhide <abhide>
Priority: unspecified    
Version: 8.6CC: briasmit, cwei, djez, rmeggins, spetrosi, vtrefny
Target Milestone: rcKeywords: FutureFeature, Triaged
Target Release: 8.9Flags: pm-rhel: mirror+
Hardware: Unspecified   
OS: Linux   
Whiteboard: role:storage
Fixed In Version: rhel-system-roles-1.22.0-0.9.el8 Doc Type: Enhancement
Doc Text:
.`storage` system role supports configuring the stripe size for RAID LVM volumes With this update, you can now specify a custom stripe size when creating RAID LVM devices. For better performance, use the custom stripe size for SAP HANA. The recommended stripe size for RAID LVM volumes is 64 KB.
 Story Points: ---
Clone Of:
: 2181656 (view as bug list) Environment:
Last Closed: 2023-11-14 15:31:16 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: 2142550, 2168476    
Bug Blocks:    

Description Csaba Daradics 2022-11-11 08:46:45 UTC 
Description of problem:

Creating LVM RAID with the Storage System Role doesn't have the option to set custom stripe sizes; it has a hard-coded default value of 64K

After a discussion with Brian Smith, this should be considered an RFE for the storage system role to support configuring the stripe size for RAID LVM volumes

Version-Release number of selected component (if applicable):

Tested on: 

redhat.rhel_system_roles 1.16.2
fedora.linux_system_roles 1.30.0

How reproducible:

Running the role with specific options for an LVM RAID setup

Steps to Reproduce:

Run the following playbook:

---
- name: PoC RAID0 HANA storage with storage system role
  hosts: <managed node>
  become: yes
  vars:
    unused_disks: 
      - <disk1>
      - <disk2>
  tasks:
    - name: Run storage role
      vars:
        storage_safe_mode: false
        storage_use_partitions: true
        storage_pools:
          - name: hanadata_vg
            type: lvm
            disks: "{{ unused_disks }}"
            state: present
            volumes:
              - name: hanadata_lv
                size: 100%
                mount_point: /hana/data
                fs_type: xfs
                raid_disks: "{{ [unused_disks[0], unused_disks[1]] }}"
                raid_level: raid0
      ansible.builtin.include_role:
        name: fedora.linux_system_roles.storage
        #name: redhat.rhel_system_roles.storage
...


Actual results:

- stripe size is set to 64K by default

[root@ansible3 ~]# lvs -ao +lv_full_name,devices,stripe_size | awk '/hanadata/'
  hanadata_lv            hanadata_vg rwi-aor---  199.99g                                                     hanadata_vg/hanadata_lv          hanadata_lv_rimage_0(0),hanadata_lv_rimage_1(0) 64.00k
  [hanadata_lv_rimage_0] hanadata_vg iwi-aor--- <100.00g                                                     hanadata_vg/hanadata_lv_rimage_0 /dev/sdf1(0)                                        0 
  [hanadata_lv_rimage_1] hanadata_vg iwi-aor--- <100.00g                                                     hanadata_vg/hanadata_lv_rimage_1 /dev/sdg1(0)                                        0 
[root@ansible3 ~]# 


Expected results:

Similarly to raid_chunk_size, there should be the option to a custom value, if needed

Additional info:

The Azure documentation asks for specific stripe sizes here: https://learn.microsoft.com/en-us/azure/virtual-machines/workloads/sap/hana-vm-operations-storage#stripe-sizes-when-using-logical-volume-managers
Comment 19 errata-xmlrpc 2023-11-14 15:31:16 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (rhel-system-roles bug fix and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2023:6946