<div dir="ltr">Hi:<br>I follow <a href="https://wiki.lustre.org/Installing_the_Lustre_Software" target="_blank">https://wiki.lustre.org/Installing_the_Lustre_Software</a> to install lustre.<br><br>My kernel is<br><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">$ uname -r</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">4.18.0-477.13.1.el8_8.x86_64<br><br>I install <br></span></p><p style="font-size:13px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue""><a href="https://downloads.whamcloud.com/public/lustre/lustre-2.15.3/el8.8/server" target="_blank">https://downloads.whamcloud.com/public/lustre/lustre-2.15.3/el8.8/server</a></p><p style="font-size:13px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue""><a href="https://downloads.whamcloud.com/public/lustre/lustre-2.15.3/el8.8/client" target="_blank">https://downloads.whamcloud.com/public/lustre/lustre-2.15.3/el8.8/client</a></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"></span></p><p style="font-size:13px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue""><a href="https://downloads.whamcloud.com/public/e2fsprogs/1.47.0.wc2/el8" target="_blank">https://downloads.whamcloud.com/public/e2fsprogs/1.47.0.wc2/el8</a></p><p style="font-size:13px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue""><br></p><p style="font-size:13px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue"">lsmod | grep lustre<br></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>lustre</b></span><span style="font-variant-ligatures:no-common-ligatures">               1048576  0</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">lmv                   204800  1 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>lustre</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">mdc                   282624  1 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>lustre</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">lov                   344064  2 mdc,</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>lustre</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">ptlrpc               2490368  7 fld,osc,fid,lov,mdc,lmv,</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>lustre</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">obdclass             3633152  8 fld,osc,fid,ptlrpc,lov,mdc,lmv,</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>lustre</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">lnet                  704512  7 osc,obdclass,ptlrpc,ksocklnd,lmv,</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>lustre</b></span></p><p style="font-size:13px;font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:normal;font-family:"Helvetica Neue""></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;color:rgb(0,0,0)"><span style="font-family:Menlo;font-variant-ligatures:no-common-ligatures">libcfs                266240  11 fld,lnet,osc,fid,obdclass,ptlrpc,ksocklnd,lov,mdc,lmv,</span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b><font face="Menlo">lustre</font><br><br></b><span style="color:rgb(34,34,34);font-family:"Helvetica Neue";font-size:13px;font-variant-ligatures:normal">lsmod | grep zfs<br></span></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">lsmod | grep zfs</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>zfs</b></span><span style="font-variant-ligatures:no-common-ligatures">                  3887104  0</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">zunicode              335872  1 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>zfs</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">zzstd                 512000  1 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>zfs</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">zlua                  176128  1 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>zfs</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">zavl                   16384  1 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>zfs</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">icp                   319488  1 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>zfs</b></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">zcommon               102400  2 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>zfs</b></span><span style="font-variant-ligatures:no-common-ligatures">,icp</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">znvpair                90112  2 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>zfs</b></span><span style="font-variant-ligatures:no-common-ligatures">,zcommon</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">spl                   114688  6 </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(202,51,35)"><b>zfs</b></span><span style="font-variant-ligatures:no-common-ligatures">,icp,zzstd,znvpair,zcommon,zavl<br><br><br></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;line-height:normal">I am able to create mgs/mdt/ost<br><br>But when I try to mount<br></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">sudo mount.lustre lustre-mgs/mgs /lustre/mnt</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">mount.lustre: mount lustre-mgs/mgs at /lustre/mnt failed: No such device</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures">Are the lustre modules loaded?</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"> Check /etc/modprobe.conf and /proc/filesystems<br><br>dmesg gives these error<br></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(202,51,35)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(57,192,38)">[76783.604090] </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(170,171,37)">LustreError</span><span style="font-variant-ligatures:no-common-ligatures">: 158-c: Can't load module 'osd-zfs'</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(202,51,35)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(57,192,38)">[76783.606174] </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(170,171,37)">LustreError</span><span style="font-variant-ligatures:no-common-ligatures">: 223535:0:(genops.c:361:class_newdev()) OBD: unknown type: osd-zfs</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(202,51,35)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(57,192,38)">[76783.607856] </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(170,171,37)">LustreError</span><span style="font-variant-ligatures:no-common-ligatures">: 223535:0:(obd_config.c:620:class_attach()) Cannot create device MGS-osd of type osd-zfs : -19</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(202,51,35)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(57,192,38)">[76783.609805] </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(170,171,37)">LustreError</span><span style="font-variant-ligatures:no-common-ligatures">: 223535:0:(obd_mount.c:195:lustre_start_simple()) MGS-osd attach error -19</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(202,51,35)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(57,192,38)">[76783.611426] </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(170,171,37)">LustreError</span><span style="font-variant-ligatures:no-common-ligatures">: 223535:0:(obd_mount_server.c:1993:server_fill_super()) Unable to start osd on lustre-mgs/mgs: -19</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(0,0,0)"><span style="font-variant-ligatures:no-common-ligatures"></span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(202,51,35)"><span style="font-variant-ligatures:no-common-ligatures;color:rgb(57,192,38)">[76783.613457] </span><span style="font-variant-ligatures:no-common-ligatures;color:rgb(170,171,37)">LustreError</span><span style="font-variant-ligatures:no-common-ligatures">: 223535:0:(super25.c:183:lustre_fill_super()) llite: Unable to mount <unknown>: rc = -19</span></p><p style="font-variant-numeric:normal;font-variant-east-asian:normal;font-variant-alternates:normal;margin:0px;font-kerning:auto;font-feature-settings:normal;font-stretch:normal;font-size:11px;line-height:normal;font-family:Menlo;color:rgb(202,51,35)"><br></p></div>