https://community.cloudera.com/t5/Archives-of-Support-Questions/Using-LVM-to-create-Hadoop-Volumes/m-p/139465#M31996 <P>Hi All,</P><P>We are using LVM on the Data nodes HDFS Volumes .Is this going to create latency in Read/Write .</P><P>We have observed that local to HDFS files copies are taking too much of time .especially when doing multiple copies.</P><P>Any thoughts on this ..</P><P>Shihab</P> Wed, 15 Jun 2016 13:47:53 GMT shihab_pri 2016-06-15T13:47:53Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Using-LVM-to-create-Hadoop-Volumes/m-p/139465#M31996 <P>Hi All,</P><P>We are using LVM on the Data nodes HDFS Volumes .Is this going to create latency in Read/Write .</P><P>We have observed that local to HDFS files copies are taking too much of time .especially when doing multiple copies.</P><P>Any thoughts on this ..</P><P>Shihab</P> Wed, 15 Jun 2016 13:47:53 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Using-LVM-to-create-Hadoop-Volumes/m-p/139465#M31996 shihab_pri 2016-06-15T13:47:53Z https://community.cloudera.com/t5/Archives-of-Support-Questions/Using-LVM-to-create-Hadoop-Volumes/m-p/139466#M31997 <P>HWX doesn't recommend using lvm for the datanodes (overhead and no benefit). </P><P>You typically create a partition per disk (no raid) with the your FS directly on top. </P><P>FS typically are ext4 or xfs. </P> Wed, 15 Jun 2016 16:47:50 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/Using-LVM-to-create-Hadoop-Volumes/m-p/139466#M31997 orenault 2016-06-15T16:47:50Z