<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Balloon Text Char";
margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";}
span.BalloonTextChar
{mso-style-name:"Balloon Text Char";
mso-style-priority:99;
mso-style-link:"Balloon Text";
font-family:"Tahoma","sans-serif";}
span.EmailStyle19
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:#1F497D;
font-weight:normal;
font-style:normal;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;
font-weight:normal;
font-style:normal;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hi,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Lustre module is loaded. I am getting bellow errors in /var/log/messaged</span><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> while mounting mdt. </span><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nov 7 14:10:03 mds1 kernel: LDISKFS-fs (dm-2): mounted filesystem with ordered data mode. Opts: user_xattr,errors=remount-ro,no_mbcache,nodelalloc<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nov 7 14:10:03 mds1 kernel: LustreError: 4852:0:(ldlm_lib.c:483:client_obd_setup()) can't add initial connection<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nov 7 14:10:03 mds1 kernel: LustreError: 4852:0:(obd_config.c:608:class_setup()) setup <a href="mailto:MGC10.2.1.204@o2ib">MGC10.2.1.204@o2ib</a> failed (-2)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nov 7 14:10:03 mds1 kernel: LustreError: 4852:0:(obd_mount.c:202:lustre_start_simple()) <a href="mailto:MGC10.2.1.204@o2ib">MGC10.2.1.204@o2ib</a> setup error -2<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nov 7 14:10:03 mds1 kernel: LustreError: 4852:0:(obd_mount_server.c:1573:server_put_super()) no obd home-MDT0000<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nov 7 14:10:03 mds1 kernel: LustreError: 4852:0:(obd_mount_server.c:132:server_deregister_mount()) home-MDT0000 not registered<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nov 7 14:10:03 mds1 kernel: Lustre: server umount home-MDT0000 complete<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Nov 7 14:10:03 mds1 kernel: LustreError: 4852:0:(obd_mount.c:1504:lustre_fill_super()) Unable to mount (-2)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'>Parag<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div><p class=MsoNormal><span style='font-size:14.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Ben Evans [mailto:bevans@cray.com] <br><b>Sent:</b> Wednesday, November , 2017 6:19 PM<br><b>To:</b> Raj; Parag Khuraswar<br><b>Cc:</b> Lustre discussion<br><b>Subject:</b> Re: [lustre-discuss] mdt mounting error<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>On the node in question Try: lsmod | grep lustre<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>followed by: modprobe lustre<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>I'm betting the modules aren't loaded for some reason, generally that reason is found in dmesg.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p></div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>From: </span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:black'>lustre-discuss <<a href="mailto:lustre-discuss-bounces@lists.lustre.org">lustre-discuss-bounces@lists.lustre.org</a>> on behalf of Raj <<a href="mailto:rajgautam@gmail.com">rajgautam@gmail.com</a>><br><b>Date: </b>Wednesday, November 1, 2017 at 7:48 AM<br><b>To: </b>Parag Khuraswar <<a href="mailto:parag_k@citilindia.com">parag_k@citilindia.com</a>><br><b>Cc: </b>Lustre discussion <<a href="mailto:lustre-discuss@lists.lustre.org">lustre-discuss@lists.lustre.org</a>><br><b>Subject: </b>Re: [lustre-discuss] mdt mounting error<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p></div><div><div><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>Parag, I have not tested two FS using a common MGT and I don’t know whether it is supported.<o:p></o:p></span></p></div></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'><o:p> </o:p></span></p><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>On Wed, Nov 1, 2017 at 6:37 AM Parag Khuraswar <<a href="mailto:parag_k@citilindia.com" target="_blank">parag_k@citilindia.com</a>> wrote:<o:p></o:p></span></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.5pt;font-family:"Calibri","sans-serif";color:black'>Hi Raj,<br><br>But I have two file systems,<br>And I think I can use one mgt for two filesystems. Please correct me if<br>I am wrong.<br><br>Regards,<br>Parag<br><br><br>On 2017-11-01 16:56, Raj wrote:<br>> The following can contribute to this issue:<br>> - Missing FS name in mgt creation (it must be <=9 character long):<br>> --fsname=<br>> mkfs.lustre <a href="mailto:--servicenode=10.2.1.204@o2ib">--servicenode=10.2.1.204@o2ib</a><br>> <a href="mailto:--servicenode=10.2.1.205@o2ib">--servicenode=10.2.1.205@o2ib</a> --FSNAME=HOME --mgs /dev/mapper/mpathc<br>><br>> - verify if /mdt directory exists<br>><br>> On Wed, Nov 1, 2017 at 6:16 AM Raj <<a href="mailto:rajgautam@gmail.com" target="_blank">rajgautam@gmail.com</a>> wrote:<br>><br>>> What options in mkfs.lustre did you use to format with lustre?<br>>><br>>> On Wed, Nov 1, 2017 at 6:14 AM Parag Khuraswar<br>>> <<a href="mailto:parag_k@citilindia.com" target="_blank">parag_k@citilindia.com</a>> wrote:<br>>><br>>> Hi Raj,<br>>><br>>> Yes, /dev/mapper/mpatha available.<br>>><br>>> I could format and mount using ext4.<br><br>>><br>>> Regards,<br>>><br>>> Parag<br>>><br>>> FROM: Raj [mailto:<a href="mailto:rajgautam@gmail.com" target="_blank">rajgautam@gmail.com</a>]<br>>> SENT: Wednesday, November , 2017 4:39 PM<br>>> TO: Parag Khuraswar; Lustre discussion<br>>> SUBJECT: Re: [lustre-discuss] mdt mounting error<br>>><br>>> Parag,<br>>> Is the device /dev/mapper/mpatha available?<br>>> If not, the multipathd may not have started or the multipath<br>>> configuration may not be correct.<br>>><br>>> On Wed, Nov 1, 2017 at 5:18 AM Parag Khuraswar<br>>> <<a href="mailto:parag_k@citilindia.com" target="_blank">parag_k@citilindia.com</a>> wrote:<br>>><br>>> Hi,<br>>><br>>> I am getting below error while mounting mdt. Mgt is mounted.<br>>><br>>> Please suggest<br>>><br>>> [root@mds2 ~]# mount -t lustre /dev/mapper/mpatha /mdt<br>>><br>>> mount.lustre: mount /dev/mapper/mpatha at /mdt failed: No such file<br>>> or directory<br>>><br>>> Is the MGS specification correct?<br>>><br>>> Is the filesystem name correct?<br>>><br>>> If upgrading, is the copied client log valid? (see upgrade docs)<br>>><br>>> Regards,<br>>><br>>> Parag<br>>><br>>> _______________________________________________<br>>> lustre-discuss mailing list<br>>> <a href="mailto:lustre-discuss@lists.lustre.org" target="_blank">lustre-discuss@lists.lustre.org</a><br>>> <a href="http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org" target="_blank">http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org</a><o:p></o:p></span></p></blockquote></div></div></div></div></div></body></html>