[LU-717] ext4 mmp block uses incorrect utsname field for nodename

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.2.0, Lustre 2.1.2, Lustre 1.8.7
• Affects Version/s: Lustre 2.1.0, Lustre 1.8.6
• Story Points: 1
• Severity: 3
• Assignee: Niu Yawei (Inactive)
• Reporter: Andreas Dilger

Description

The MMP patch committed to upstream used the init_utsname()->systemname field instead of init_utsname()->nodename field for filling in the MMP block.This incorrectly will cause MMP messages to report the system "Linux" is using the node instead of the correct hostname.

This was introduced in the port of the MMP patches from RHEL5 to RHEL6, not caught during inspection due to the required API change at that line and other massive code reorganization, and then merged upstream to ext4, and also merged back into our RHEL5 MMP patch.

The MMP patches that use sysname should be changed to use nodename instead.

Issue Links

• is duplicated by: LU-1221 MMP failure info states "Linux" as the last update node
• Trackbacks: Lustre 1.8.x known issues tracker While testing against Lustre b18 branch, we would hit known bugs which were already reported in Lustre Bugzilla https://bugzilla.lustre.org/. In order to move away from relying on Bugzilla, we would create a JIRA
• Trackbacks: Changelog 2.1 Changes from version 2.1.1 to version 2.1.2 Server support for kernels: 2.6.18308.4.1.el5 (RHEL5) 2.6.32220.17.1.el6 (RHEL6) Client support for unpatched kernels: 2.6.18308.4.1.el5 (RHEL5) 2.6.32220.17.1....
• Trackbacks: Changelog 2.2 version 2.2.0 Support for networks: o2iblnd OFED 1.5.4 Server support for kernels: 2.6.32220.4.2.el6 (RHEL6) Client support for unpatched kernels: 2.6.18274.18.1.el5 (RHEL5) 2.6.32220.4.2.el6 (RHEL6) 2.6.32.360....