[LU-8534] RHEL7.3 ldiskfs patch set

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.9.0
• Affects Version/s: Lustre 2.8.0
• Labels: RHEL7.3 llnl
• Severity: 3
• Assignee: Peter Jones
• Reporter: Christopher Morrone (Inactive)

Description

Locally I need to get Lustre built against an alpha kernel for RHEL7.3 beta. I started with the ldiskfs-3.10-rhel7.2.series, and hit the following issue.

It appears that patch 923ae0ff9250430133b3310fe62c47538cf1cbc1 from the upsteam linux kernel is in this new pre-RHEL7.3 kernel. The patch introduces ext4 DAX support.

It adds the following define to fs/ext4/ext4.h:

+#ifdef CONFIG_FS_DAX
+#define EXT4_MOUNT_DAX                 0x00200 /* Direct Access */
+#else
+#define EXT4_MOUNT_DAX                 0
+#endif

The ext4-data-in-dirent.patch introduces EXT4_MOUNT_DIRDATA with the same value:

#define EXT4_MOUNT_DIRDATA             0x00200 /* Data in directory entries*/

I am going to need guidance on that flag conflict.

Issue Links

• is blocking: LU-8796 kernel upgrade [RHEL7.3 3.10.0-514.el7]
• is related to: LU-8571 Lustre 2.8 support for RHEL7.3