<html><head></head><body bgcolor="#FFFFFF"><div></div><div><span class="Apple-style-span" style="color: rgb(31, 73, 125); font-family: 'Courier New'; font-size: 13px; -webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); ">Hello Justin, </span></div><div><span class="Apple-style-span" style="color: rgb(31, 73, 125); font-family: 'Courier New'; font-size: 13px; -webkit-tap-highlight-color: rgba(26, 26, 26, 0.292969); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); ">Can you please advise if there is a way to NFS share a folder other than /home in an EC2 cluster? The issue I am running into is that the default 10GB EBS storage that Amazon provides on an m1.small instance is not enough for me to test IOR benchmark. I am running into ‘out of space’ issue beyond a 6-node cluster. I would like to the default instance storage of 160GB that is available in /mnt folder. There is a default /mnt/ec2-user folder on the master node of the cluster and would like to NFS share that location with all the compute nodes so I have enough space to complete the execution of the benchmark.</span><br></div><div><span class="Apple-style-span" style="-webkit-tap-highlight-color: rgba(26, 26, 26, 0.296875); -webkit-composition-fill-color: rgba(175, 192, 227, 0.230469); -webkit-composition-frame-color: rgba(77, 128, 180, 0.230469); "><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); "><o:p></o:p></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); "><o:p> </o:p></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); ">I do realize that using an instance storage has its risks and limitation as the data is lost when the cluster is stopped or destroyed. I have copied a snippet from your website that I thought I could replicate for sharing <b><u>/mnt/ec2-user</u></b> folder.<o:p></o:p></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); line-height: 18pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; background-position: initial initial; background-repeat: initial initial; "><span style="font-size: 10.5pt; font-family: Arial, sans-serif; color: rgb(62, 67, 73); "><a href="http://web.mit.edu/star/cluster/docs/latest/manual/getting_started.html" style="color: blue; text-decoration: underline; ">http://web.mit.edu/star/cluster/docs/latest/manual/getting_started.html</a><o:p></o:p></span></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 9pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; background-position: initial initial; background-repeat: initial initial; "><span style="font-size: 16pt; font-family: Arial, sans-serif; color: rgb(34, 34, 34); ">Verify /home is NFS Shared</span><span style="font-size: 21pt; font-family: Arial, sans-serif; color: rgb(34, 34, 34); "><a href="http://web.mit.edu/star/cluster/docs/latest/manual/getting_started.html#verify-home-is-nfs-shared" title="Permalink to this headline" style="color: blue; text-decoration: underline; "><span style="font-size: 9pt; ">¶</span></a><o:p></o:p></span></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); line-height: 18pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; background-position: initial initial; background-repeat: initial initial; "><span style="font-size: 10.5pt; font-family: Arial, sans-serif; color: rgb(62, 67, 73); ">The /home folder on all clusters launched by StarCluster should be NFS shared to each node. To check this, login to the master as root and run the mount command on each node to verify that /home is mounted from the master:<o:p></o:p></span></p><pre style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; line-height: 12.75pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(250, 250, 250); font-size: 10.5pt; font-family: Consolas; background-position: initial initial; background-repeat: initial initial; "><span style="color: rgb(62, 67, 73); ">$ starcluster sshmaster mycluster<o:p></o:p></span></pre><pre style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; line-height: 12.75pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(250, 250, 250); font-size: 10.5pt; font-family: Consolas; background-position: initial initial; background-repeat: initial initial; "><span style="color: rgb(62, 67, 73); ">root@master:~# ssh node001 mount<o:p></o:p></span></pre><pre style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; line-height: 12.75pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(250, 250, 250); font-size: 10.5pt; font-family: Consolas; background-position: initial initial; background-repeat: initial initial; "><span style="color: rgb(62, 67, 73); ">/dev/sda1 on / type ext3 (rw)<o:p></o:p></span></pre><pre style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; line-height: 12.75pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(250, 250, 250); font-size: 10.5pt; font-family: Consolas; background-position: initial initial; background-repeat: initial initial; "><span style="color: rgb(62, 67, 73); ">none on /proc type proc (rw)<o:p></o:p></span></pre><pre style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; line-height: 12.75pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(250, 250, 250); font-size: 10.5pt; font-family: Consolas; background-position: initial initial; background-repeat: initial initial; "><span style="color: rgb(62, 67, 73); ">none on /sys type sysfs (rw)<o:p></o:p></span></pre><pre style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; line-height: 12.75pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(250, 250, 250); font-size: 10.5pt; font-family: Consolas; background-position: initial initial; background-repeat: initial initial; "><span style="color: rgb(62, 67, 73); ">/dev/sda2 on /mnt type ext3 (rw)<o:p></o:p></span></pre><pre style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; line-height: 12.75pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(250, 250, 250); font-size: 10.5pt; font-family: Consolas; background-position: initial initial; background-repeat: initial initial; "><span style="color: rgb(62, 67, 73); ">none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)<o:p></o:p></span></pre><pre style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; line-height: 12.75pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(250, 250, 250); font-size: 10.5pt; font-family: Consolas; background-position: initial initial; background-repeat: initial initial; "><span style="color: rgb(62, 67, 73); ">master:/home on /home type nfs (rw,user=root,nosuid,nodev,user,addr=10.215.42.81)<o:p></o:p></span></pre><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); line-height: 18pt; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: white; background-position: initial initial; background-repeat: initial initial; "><span style="font-size: 10.5pt; font-family: Arial, sans-serif; color: rgb(62, 67, 73); ">The last line in the output above indicates that /home is mounted from the master node over NFS. Running this for the rest of the nodes (e.g. node002, node003, etc) should produce the same output.<o:p></o:p></span></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); "><o:p> </o:p></p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); ">Thanks,</p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); ">Subbarao Kota.</p><p class="MsoNormal" style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 10pt; font-family: 'Courier New'; color: rgb(31, 73, 125); "><o:p> </o:p></p></span></div></body></html>