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-roles | Assignee: | Vojtech Trefny <vtrefny> | |
| Status: | CLOSED ERRATA | QA Contact: | Fine Fan <ffan> | |
| Severity: | unspecified | Docs Contact: | Apurva Bhide <abhide> | |
| Priority: | unspecified | |||
| Version: | 8.6 | CC: | briasmit, cwei, djez, rmeggins, spetrosi, vtrefny | |
| Target Milestone: | rc | Keywords: | FutureFeature, Triaged | |
| Target Release: | 8.9 | |||
| 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.
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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: | ||||
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 |
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