[LU-9240] Can the ldiskfs support Linux kernel 4.1.38+?

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.9.0
• Type: Question/Request
• Priority: Blocker
• Reporter: ZhangWei
• Assignee: WC Triage
• Resolution: Not a Bug
• Labels: ldiskfs, server

Environment

Linux kernel 4.1.38+

• Epic/Theme: ldiskfs

Description

I am studying the Lustre File System and need re-build the 2.9 Lustre with Linux Kernel 4.1.38.
But, the ldiskfs module has so many patches for ext3/ext4 only on Linux kernel 3.12 or earlier. Can the ldiskfs support Linux kernel 4.1.38 or later versions?

Comments

[Andreas Dilger]

We haven't done the work to port ldiskfs to a newer server yet. If you are interested to do so, that would be welcome.

Alternately, you can use ZFS for the back-end disk storage, since that doesn't require any kernel/ext4 patching at all.

[James A Simmons]

Actually since we have SLES12SP2 support a port of ldiskfs to a 4.4 kernel exist. Try that.

[ZhangWei]

Hi Dilger,
Thank your for your great information. And since I am an newbie of the Lustre, can you tell me how to set the Lustre to use ZFS instead of the ldiskfs ?

[ZhangWei]

Hi Simmons,
In the version 2.9 Lustre, there is only server source codes for SLES12SP1.Where can I find the SLES12SP2 support?

[ZhangWei]

Hi Dilger,
I have found some description about run Lustre on the ZFS as the back fs : http://wiki.lustre.org/Lustre_with_ZFS_Install
It seems that this is the way using ZFS instead of ldiskfs. Thanks you again !!!