https://community.netapp.com/t5/EF-E-Series-SANtricity-and-Related-Plug-ins/Error-reading-device-using-LVM-on-CentOS-with-iSCSI-E-Series-volume/m-p/151227#M785 <P>Hello&nbsp;</P> <P>&nbsp;</P> <P>Is any other storage box attach to the host apart from the NetApp and are you sure these errors are reported from the NetApp storage itself.</P> <P>&nbsp;</P> <P>And also confirm if you can navigate to the path were the errors are reported and see the content inside the folders.</P> <P>&nbsp;</P> <P>Thanks</P> <P>Vinay</P> Wed, 25 Sep 2019 07:23:36 GMT Vinayraj 2019-09-25T07:23:36Z https://community.netapp.com/t5/EF-E-Series-SANtricity-and-Related-Plug-ins/Error-reading-device-using-LVM-on-CentOS-with-iSCSI-E-Series-volume/m-p/148592#M763 <P>I have a CentOS 7 system (3.10.0-957.12.2.el7.x86_64) with Unified Host Utilities 7.1 installed and multipathd configured &amp; enabled.</P> <P>&nbsp;</P> <P>When I run pvcreate on the /dev/mapper/xxxx devices I get a series of errors below, although the command then completes successfully.&nbsp; Is there any configuration I can use which will suppress these errors?</P> <P>&nbsp;</P> <PRE># pvcreate /dev/mapper/StorageGRID_* Error reading device /dev/sdr at 0 length 512. Error reading device /dev/sdr at 0 length 4. Error reading device /dev/sdr at 4096 length 4. Error reading device /dev/sds at 0 length 512. Error reading device /dev/sds at 0 length 4. Error reading device /dev/sds at 4096 length 4. Error reading device /dev/sdt at 0 length 512. Error reading device /dev/sdt at 0 length 4. Error reading device /dev/sdt at 4096 length 4. Error reading device /dev/sdu at 0 length 512. Error reading device /dev/sdu at 0 length 4. Error reading device /dev/sdu at 4096 length 4. Physical volume "/dev/mapper/StorageGRID_BASE_OSBOOT" successfully created. Physical volume "/dev/mapper/StorageGRID_CONTAINER" successfully created. Physical volume "/dev/mapper/StorageGRID_OBJ_VOL0000" successfully created. Physical volume "/dev/mapper/StorageGRID_OBJ_VOL0001" successfully created.</PRE> Wed, 04 Jun 2025 12:30:54 GMT https://community.netapp.com/t5/EF-E-Series-SANtricity-and-Related-Plug-ins/Error-reading-device-using-LVM-on-CentOS-with-iSCSI-E-Series-volume/m-p/148592#M763 __mattb__ 2025-06-04T12:30:54Z https://community.netapp.com/t5/EF-E-Series-SANtricity-and-Related-Plug-ins/Error-reading-device-using-LVM-on-CentOS-with-iSCSI-E-Series-volume/m-p/151227#M785 <P>Hello&nbsp;</P> <P>&nbsp;</P> <P>Is any other storage box attach to the host apart from the NetApp and are you sure these errors are reported from the NetApp storage itself.</P> <P>&nbsp;</P> <P>And also confirm if you can navigate to the path were the errors are reported and see the content inside the folders.</P> <P>&nbsp;</P> <P>Thanks</P> <P>Vinay</P> Wed, 25 Sep 2019 07:23:36 GMT https://community.netapp.com/t5/EF-E-Series-SANtricity-and-Related-Plug-ins/Error-reading-device-using-LVM-on-CentOS-with-iSCSI-E-Series-volume/m-p/151227#M785 Vinayraj 2019-09-25T07:23:36Z