BTRFS-related crashes, hangs and file system corruptions when using quotas

This document (000019901) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server for SAP Applications 15 SP2
SUSE Linux Enterprise Server for SAP Applications 15 SP1
SUSE Linux Enterprise Server 15 SP2
SUSE Linux Enterprise Server 15 SP1
SUSE Linux Enterprise Server 12 SP5

Situation

A number of different situations causing system crashes, hangs and even file system corruptions have been observed when using BTRFS quotas or full file systems:

• Server crash -

• Server freeze / hang
• The root filesystem was mounted read-only after reboot and failed to mount as read/write -

Resolution

Maintenance updates resolving this issue have been released.

To check which kernel update needs to be applied, please execute

zypper lp -a --bugzilla=1182047

which returns something similar to:

linux15sp2:~ # zypper lp -a --bugzilla=1182047
[...]
Loading repository data...
Reading installed packages...

The following matches in issue numbers have been found:

Issue    | No.     | Patch                                      | Category | Severity  | Interactive | Status  | Since      | Summary
---------+---------+--------------------------------------------+----------+-----------+-------------+---------+------------+-------------------------------------
bugzilla | 1182047 | SUSE-SLE-Module-Basesystem-15-SP2-2021-741 | security | important | reboot      | needed | - | Security update for the Linux Kernel

To install the required patch please use:

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP2-2021-741

If multiple hits are returned please always apply the highest patch version.

Cause

The root cause was a specific kernel patch to handle qgroup space .

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

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