[LUDOC-540] Lustre Wiki: Review ZFS Feature Pages

• Type: Improvement
• Resolution: Unresolved
• Priority: Minor
• Labels: dwg
• Severity: 3
• Assignee: Shane Nehring
• Reporter: Ellis Wilson

Description

The following pages are all over 3 years old.  These are being reviewed as part of the efforts of the Lustre Documentation Working Group.  The main intent of this bug is to evaluate if these pages require:

• Reorganization
• Removal due to staleness
• Extension due to missing material
• Correction to fix incorrect or stale material

The author is expected to annotate this work item with the changes expected.  They may or may not make those changes as part of this work item.  If they choose to not make those changes, they are expected to create a new work item where the identified, explicit improvements can be made by another individual within the LUDOC stream.  If they do choose to make those changes, please clarify such in the comment section.

The full list of pages include:

ZFS Feature Pages:

[ZFS Snapshots for MDT backup|https://wiki.lustre.org/ZFS_Snapshots_for_MDT_backup]‏‎ (12:08, 6 May 2015)

[ZFS Compression|https://wiki.lustre.org/ZFS_Compression]‏‎ (16:11, 7 August 2015)

[ZFS JBOD Monitoring|https://wiki.lustre.org/ZFS_JBOD_Monitoring]‏‎ (17:28, 12 April 2016)

[Examining ZFS Pools with zdb|https://wiki.lustre.org/Examining_ZFS_Pools_with_zdb]‏‎ (22:51, 30 August 2017)

[ZFS OSD Hardware Considerations|https://wiki.lustre.org/ZFS_OSD_Hardware_Considerations]‏‎ (19:23, 12 September 2017)

[ZFS System Design|https://wiki.lustre.org/ZFS_System_Design]‏‎ (17:44, 19 January 2018)

[ZFS recordsize Property|https://wiki.lustre.org/ZFS_recordsize_Property]‏‎ (13:28, 25 May 2018)

[ZFS Tunables for Lustre Object Storage Servers (OSS)|https://wiki.lustre.org/ZFS_Tunables_for_Lustre_Object_Storage_Servers_(OSS)]‏‎ (13:34, 25 May 2018)

[ZFS Tunables for Lustre Metadata Servers (MDS)|https://wiki.lustre.org/ZFS_Tunables_for_Lustre_Metadata_Servers_(MDS)]‏‎ (15:22, 25 May 2018)

[ZFS OSD|https://wiki.lustre.org/ZFS_OSD]‏‎ (12:53, 25 February 2020)

[ZFS MDT ENOSPC Recovery|https://wiki.lustre.org/ZFS_MDT_ENOSPC_Recovery]‏‎ (15:58, 13 November 2020)

[ZFS|https://wiki.lustre.org/ZFS]‏‎ (11:48, 9 December 2020)

Comments

[Shane Nehring]

Per correspondence with another user the documentation around the 'replace_nids' command could use some notes for additional things that need to be changed for zfs mdt and osts, namely the zfs props for lustre:mgsnode and lustre:failover.node (if applicable).

[Shane Nehring]

I've reworked the ZFS Compression article a bit, updating a few parts to the present state of things. I'll probably link it into either the main ZFS article or on the OSD / OSD tuning pages/categories.

[Shane Nehring]

The ZFS Snapshots for MDT backup article should likely be deleted and replaced with a general 'ZFS Snapshots for Backup' article that covers using snapshots and zfs sends for backing up both MDTs and OSTs.