[lustre-discuss] Problem in confugration of MGS and MDT server in lustre.

Tue Dec 20 01:34:07 PST 2022

Hi

Yes, both parameters at the same time are valid.

Regarding the RPMS you installed. You picked a new kernel, did you reboot to use it? If not you should.
You are missing those 2 packages, I’m even surprised Yum did not complain about missing deps.
kmod-lustre-2.15.1-1.el8.x86_64.rpm<https://downloads.whamcloud.com/public/lustre/latest-release/el8.6/server/RPMS/x86_64/kmod-lustre-2.15.1-1.el8.x86_64.rpm>
kmod-lustre-osd-ldiskfs-2.15.1-1.el8.x86_64.rpm<https://downloads.whamcloud.com/public/lustre/latest-release/el8.6/server/RPMS/x86_64/kmod-lustre-osd-ldiskfs-2.15.1-1.el8.x86_64.rpm>

lustre-ldiskfs-dkms: you installed ldiskfs support as a DKMS package but not Lustre as a DKMS too. I recommend using the same for every package, so here, install the osd package above instead of your DKMS one.

Probably the best for you is to setup https://downloads.whamcloud.com/public/lustre/latest-release/el8.6/server/ as YUM additional repository.

Aurélien

De : lustre-discuss <lustre-discuss-bounces at lists.lustre.org> au nom de Taner KARAGÖL via lustre-discuss <lustre-discuss at lists.lustre.org>
Répondre à : Taner KARAGÖL <karagol at aselsan.com.tr>
Date : mardi 20 décembre 2022 à 07:12
À : Nick dan <nickdan2999 at gmail.com>
Cc : "lustre-discuss at lists.lustre.org" <lustre-discuss at lists.lustre.org>
Objet : RE: [EXTERNAL][lustre-discuss] Problem in confugration of MGS and MDT server in lustre.

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Hi,

Is it valid to use two parameters at the same time?  “--mgs –mdt”   I dont think so.

Regards,

From: lustre-discuss <lustre-discuss-bounces at lists.lustre.org> On Behalf Of Nick dan via lustre-discuss
Sent: Tuesday, December 20, 2022 7:17 AM
To: lustre-discuss at lists.lustre.org
Subject: [lustre-discuss] Problem in confugration of MGS and MDT server in lustre.

Hi,
Nick here Trying to configure Lustre MGS and MDT on Redhat 8.6.
Referred from  https://www.lustre.org/
Successfully downloaded and installed the following packages by using yum install command:

yum install https://downloads.whamcloud.com/public/lustre/latest-release/el8.6/server/RPMS/x86_64/kernel-4.18.0-372.9.1.el8_lustre.x86_64.rpm
yum install https://downloads.whamcloud.com/public/lustre/latest-release/el8.6/server/RPMS/x86_64/lustre-2.15.1-1.el8.x86_64.rpm
yum install https://downloads.whamcloud.com/public/lustre/latest-release/el8.6/server/RPMS/x86_64/lustre-ldiskfs-dkms-2.15.1-1.el8.noarch.rpm
yum install https://downloads.whamcloud.com/public/lustre/latest-release/el8.6/server/RPMS/x86_64/lustre-osd-ldiskfs-mount-2.15.1-1.el8.x86_64.rpm
yum install https://downloads.whamcloud.com/public/e2fsprogs/latest/el8/RPMS/x86_64/e2fsprogs-1.46.2.wc5-0.el8.x86_64.rpm
yum install https://downloads.whamcloud.com/public/e2fsprogs/latest/el8/RPMS/x86_64/e2fsprogs-libs-1.46.2.wc5-0.el8.x86_64.rpm
yum install https://downloads.whamcloud.com/public/e2fsprogs/latest/el8/RPMS/x86_64/libcom_err-1.46.2.wc5-0.el8.x86_64.rpm
yum install https://downloads.whamcloud.com/public/e2fsprogs/latest/el8/RPMS/x86_64/libss-1.46.2.wc5-0.el8.x86_64.rpm
After this trying to do mkfs.lustre on my available NVMe-disk(nvme1n1)Mentioned in the below Fig
[cid:image001.png at 01D9145E.95FCE300]

And did the mkfs.lusre on it and getting the error .

mkfs.lustre --fsname=lustre  --mgs --mdt --index=0  /dev/nvme1n1

   Permanent disk data:
Target:     lustre:MDT0000
Index:      0
Lustre FS:  lustre
Mount type: ldiskfs
Flags:      0x65
              (MDT MGS first_time update )
Persistent mount opts: user_xattr,errors=remount-ro
Parameters:

checking for existing Lustre data: not found
device size = 953869MB
formatting backing filesystem ldiskfs on /dev/nvme1n1
        target name   lustre:MDT0000
        kilobytes     976762584
        options        -J size=4096 -I 1024 -i 2560 -q -O dirdata,uninit_bg,^extents,dir_nlink,quota,project,huge_file,ea_inode,large_dir,^fast_commit,flex_bg -E lazy_journal_init="0",lazy_itable_init="0" -F
mkfs_cmd = mke2fs -j -b 4096 -L lustre:MDT0000  -J size=4096 -I 1024 -i 2560 -q -O dirdata,uninit_bg,^extents,dir_nlink,quota,project,huge_file,ea_inode,large_dir,^fast_commit,flex_bg -E lazy_journal_init="0",lazy_itable_init="0" -F /dev/nvme1n1 976762584k
mkfs.lustre: Unable to mount /dev/nvme1n1: No such device
Is the ldiskfs module available?
mkfs.lustre FATAL: failed to write local files
mkfs.lustre: exiting with 19 (No such device)

Can you help where am I going wrong?

Regards,

Nick

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