On the node in question Try: lsmod | grep lustre followed by: modprobe lustre
I'm betting the modules aren't loaded for some reason, generally that reason is found in dmesg. From: lustre-discuss <[email protected]<mailto:[email protected]>> on behalf of Raj <[email protected]<mailto:[email protected]>> Date: Wednesday, November 1, 2017 at 7:48 AM To: Parag Khuraswar <[email protected]<mailto:[email protected]>> Cc: Lustre discussion <[email protected]<mailto:[email protected]>> Subject: Re: [lustre-discuss] mdt mounting error Parag, I have not tested two FS using a common MGT and I don’t know whether it is supported. On Wed, Nov 1, 2017 at 6:37 AM Parag Khuraswar <[email protected]<mailto:[email protected]>> wrote: Hi Raj, But I have two file systems, And I think I can use one mgt for two filesystems. Please correct me if I am wrong. Regards, Parag On 2017-11-01 16:56, Raj wrote: > The following can contribute to this issue: > - Missing FS name in mgt creation (it must be <=9 character long): > --fsname= > mkfs.lustre --servicenode=10.2.1.204@o2ib > --servicenode=10.2.1.205@o2ib --FSNAME=HOME --mgs /dev/mapper/mpathc > > - verify if /mdt directory exists > > On Wed, Nov 1, 2017 at 6:16 AM Raj > <[email protected]<mailto:[email protected]>> wrote: > >> What options in mkfs.lustre did you use to format with lustre? >> >> On Wed, Nov 1, 2017 at 6:14 AM Parag Khuraswar >> <[email protected]<mailto:[email protected]>> wrote: >> >> Hi Raj, >> >> Yes, /dev/mapper/mpatha available. >> >> I could format and mount using ext4. >> >> Regards, >> >> Parag >> >> FROM: Raj [mailto:[email protected]<mailto:[email protected]>] >> SENT: Wednesday, November , 2017 4:39 PM >> TO: Parag Khuraswar; Lustre discussion >> SUBJECT: Re: [lustre-discuss] mdt mounting error >> >> Parag, >> Is the device /dev/mapper/mpatha available? >> If not, the multipathd may not have started or the multipath >> configuration may not be correct. >> >> On Wed, Nov 1, 2017 at 5:18 AM Parag Khuraswar >> <[email protected]<mailto:[email protected]>> wrote: >> >> Hi, >> >> I am getting below error while mounting mdt. Mgt is mounted. >> >> Please suggest >> >> [root@mds2 ~]# mount -t lustre /dev/mapper/mpatha /mdt >> >> mount.lustre: mount /dev/mapper/mpatha at /mdt failed: No such file >> or directory >> >> Is the MGS specification correct? >> >> Is the filesystem name correct? >> >> If upgrading, is the copied client log valid? (see upgrade docs) >> >> Regards, >> >> Parag >> >> _______________________________________________ >> lustre-discuss mailing list >> [email protected]<mailto:[email protected]> >> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
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