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<div>This is just the status of the local MDT mountpoint, which does not allow any local modification, only statfs (df) and such. </div>
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<div id="AppleMailSignature">You need to mount a Lustre client to get a read-write mountpoint. <br>
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Cheers, Andreas</div>
<div><br>
On Jun 28, 2016, at 12:59, Yu Chen <<a href="mailto:chenyu@umbc.edu">chenyu@umbc.edu</a>> wrote:<br>
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<div dir="ltr">Hello,
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<div>I have finally installed lustre 2.8.0 following Christopher's suggestion (although it didn't compile on the latest kernel, 327.22). But it mounted as read-only (ro) on mds, is that right?</div>
<div>Here are the steps/info:</div>
<div><br>
</div>
<div>installed kernel: </div>
<div>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style="color:rgb(195,55,32)"><b>kernel</b></span><span>-devel-3.10.0-327.18.2.el7.x86_64</span></p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style="color:rgb(195,55,32)"><b>kernel</b></span>-3.10.0-327.18.2.el7.x86_64<br>
</p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style="color:rgb(195,55,32)"><b>kernel</b></span><span>-headers-3.10.0-327.18.2.el7.x86_64</span></p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span><br>
</span></p>
<p style="margin:0px;line-height:normal"></p>
<ul>
<li><span style="font-family:Menlo;font-size:18px">installed </span><span style="font-family:Menlo"><font size="4">zfs-release, and edited zfs.repo to use kmod. </font></span><br>
</li><li><span style="font-size:large;font-family:Menlo">yum clean metadata</span><br>
</li><li><span style="font-family:Menlo;font-size:large">yum install zfs spl kmod-zfs kmod-spl kmod-zfs-devel kmod-spl-devel </span><br>
</li><li>Then rpmbuild --rebuild --with zfs --without ldiskfs ./lustre...rpm<br>
</li><li>Then installed all the lustre rpms<br>
</li><li>loaded zfs spl lustre lnet modules<br>
</li><li><br>
</li><li><span style="font-family:Menlo;font-size:18px">mkfs.lustre --reformat --fsname=lustre01 --mgs --mdt --backfstype=zfs --index=0 --mgsnode=10.1.12.1@o2ib --servicenode=10.1.12.1@o2ib mdt01-pool/mgsmdt01</span><br>
</li><li><span style="font-family:Menlo;font-size:18px">echo "mds1 - lustre01-MDT0000 zfs:mdt01-pool/mgsmdt01" > /etc/ldev.conf</span><br>
</li><li><span style="font-family:Menlo;font-size:18px"><span style="font-family:'Helvetica Neue'"><span style="font-family:Menlo">echo "</span></span><span style="font-family:'Helvetica Neue';font-size:14px"><span style="line-height:normal;font-family:Menlo;font-size:18px">options
lnet networks=o2ib(ib0)" > /etc/modprobe.d/lustre.conf</span></span><br>
</span></li><li><span style="font-family:Menlo;font-size:18px"><span style="font-family:'Helvetica Neue';font-size:14px"><span style="line-height:normal;font-family:Menlo;font-size:18px">systemctl start lustre.service didn't work, had to use service lustre start</span></span></span></li><li><span style="font-family:Menlo;font-size:18px"><span style="font-family:'Helvetica Neue';font-size:14px"><span style="line-height:normal;font-family:Menlo;font-size:18px">then "mount" shows the following: </span></span></span></li></ul>
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<p></p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style="">mdt01-pool/mgsmdt01 on /mnt/lustre/local/lustre01-MDT0000 type lustre (ro)</span></p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style=""><br>
</span></p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo">Is this right?</p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><br>
</p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo">If I try to ls /mnt/lustre/local/lustre01-MDT000, it will say:</p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style="">ls: cannot access /mnt/lustre/local/lustre01-MDT0000/: Not a directory</span></p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style=""><br>
</span></p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style="">Thanks a lot for your time and help! First time doing lustre, a lot to learn. </span></p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style=""><br>
</span></p>
<p style="margin:0px;font-size:18px;line-height:normal;font-family:Menlo"><span style="">Chen</span></p>
<p style="margin:0px;line-height:normal"><br>
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