[LU-9080] Fileset of a new adding nodemap can't be synchronized between MDTs.

• Status: Resolved
• Project: Lustre
• Type: Bug
• Priority: Minor
• Reporter: sebg-crd-pm (Inactive)
• Assignee: Emoly Liu
• Resolution: Fixed

Environment

Centos 7.2 3.10.0-327.22.2.el7.x86_64
Lustre 2.8.59_25_g40e3986
ZFS 0.6.5.7

• Severity: 3

Description

We have added a new nodemap by using "Ictl nodemap_add" command on our MGS0/MDS1.

After about 10 seconds, we have viewed information for this new nodemap by using "Ictl get_param nodemap.XXXX.* " on MDS0.

We have found that all information has been tranferred to MDS0 successfully except Fileset.

Does anyone have the same problem? Please advise. Thanks!

Comments

[Peter Jones]

Emoly

Could you please investigate this one?

Thanks

Peter

[Emoly Liu]

The code in nodemap_create() says

        if (is_default || default_nodemap == NULL) {
                ......
        } else {
                nodemap->nmf_trust_client_ids =
                                default_nodemap->nmf_trust_client_ids;
                nodemap->nmf_allow_root_access =
                                default_nodemap->nmf_allow_root_access;
                nodemap->nmf_deny_unknown =
                                default_nodemap->nmf_deny_unknown;

                nodemap->nm_squash_uid = default_nodemap->nm_squash_uid;
                nodemap->nm_squash_gid = default_nodemap->nm_squash_gid;
                nodemap->nm_fileset[0] = 0;
        }

"nodemap->nm_fileset[0] = 0", that's is why you saw an empty fileset.
BTW, fileset info of nodemap is stored permanently by using 'lctl set_param -P' commands. It means MDS and OSS will be able to retrieve fileset info of nodemap after a restart (when they read params llog).

[sebg-crd-pm (Inactive)]

Hi Emoly,

We has solved our problem by using 'lctl set_param -P' commands.

Thanks for your help!

[Emoly Liu]

Glad to see that you have resolved the problem.

I will close this ticket and you can file a new one if you have other question.