[lustre-devel] mke2fs supported features: dirdata

[Peter Jones]

Detlev

It would be a lot more useful to incorporate any changes that you thought were warranted to the central Lustre build instructions on lustre.org. I am flagging Ellis, who is the lead of the OpenSFS Documentation Working Group and may have more specific guidance relating to this content.

Peter

From: lustre-devel <lustre-devel-bounces at lists.lustre.org> on behalf of Detlev Conrad Mielczarek <detlevcm at googlemail.com>
Date: Monday, November 11, 2024 at 12:50 AM
To: Else Someone <else at someonex.net>
Cc: "lustre-devel at lists.lustre.org" <lustre-devel at lists.lustre.org>
Subject: Re: [lustre-devel] mke2fs supported features: dirdata

You don't often get email from detlevcm at googlemail.com. Learn why this is important<https://aka.ms/LearnAboutSenderIdentification>
Dear user,

Yes, you also need to build a patched e2fsprogs.
This is outlined in the Whamcloud hosted instructions and I recently wrote instructions for Rocky 8.10 & 9.4 (hosted on Github), though kernel release numbers changed since...

The Whamcloud Wiki is here: https://wiki.whamcloud.com/display/PUB/Building+Lustre+from+Source
My own instructions are here: https://github.com/DetlevCM/lustre-build-instructions

Kind regards
Detlev

-----‐--------------------------------------
Detlev Conrad Mielczarek
+49 1520 4712 446
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detlevcm at googlemail.com

10 Nov 2024 02:08:45 Else Someone <else at someonex.net>:
Hello again! I posted here earlier about my attempts at building Lustre with Nix. There was another issue I was struggling with, related to e2fsprogs, that I thought I should ask here if I was supposed to patch it too?


My mkfs.lustre (ldiskfs) is failing with mke2fs complaining about an "incompatible option set". Specifically it's complaining about the option `dirdata`. Looking at e2fsprogs' sources, `EXT4_FEATURE_INCOMPAT_DIRDATA` isn't listed in `ok_features` in `misc/mke2fs.c`. Even if I add it there, mke2fs fails later at `ext2fs_initialize`. I was surprised not to find any error reports in jira concerning dirdata specifically (there were similar errors reported for e.g. large_dir), surely I must be doing something wrong.


Do I have to patch e2fsprogs?


Do tell me if I'm being too noisy or if there's a better channel for this sort of questions. I actually have a few more, should I ask each in a separate thread or should I aggregate all under one SUBJECT?


Thanks

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