Hi, I recently installed centos for the first time and I like it! Also, I just started working with lvm. The following warnings are genertated whenever I run one of lvm commands on the external usb disk (MyBook by Western Digital). * What could be the source for those messages? * Should I worry about them (writing into the created LV's seems to work)? * If yes, how to fix them? [root at frodo pilpel10]# uname -a Linux frodo 2.6.9-34.0.1.ELsmp #1 SMP Wed May 24 05:28:30 CDT 2006 x86_64 x86_64 x86_64 GNU/Linux Using lvm2 2.02.01-1.3 Thanks in advance, Itay <quote> [root at frodo pilpel10]# vgcreate VGe1 /dev/sdc2 /dev/dm-11: read failed after 0 of 4096 at 5242814464: Input/output error /dev/dm-11: read failed after 0 of 4096 at 0: Input/output error /dev/dm-12: read failed after 0 of 4096 at 54460416: Input/output error /dev/dm-12: read failed after 0 of 4096 at 0: Input/output error /dev/dm-13: read failed after 0 of 4096 at 216895782912: Input/output error /dev/dm-13: read failed after 0 of 4096 at 0: Input/output error /dev/dm-14: read failed after 0 of 4096 at 61203218432: Input/output error /dev/dm-14: read failed after 0 of 4096 at 0: Input/output error /dev/dm-11: read failed after 0 of 4096 at 5242814464: Input/output error /dev/dm-11: read failed after 0 of 4096 at 0: Input/output error /dev/dm-12: read failed after 0 of 4096 at 54460416: Input/output error /dev/dm-12: read failed after 0 of 4096 at 0: Input/output error /dev/dm-13: read failed after 0 of 4096 at 216895782912: Input/output error /dev/dm-13: read failed after 0 of 4096 at 0: Input/output error /dev/dm-14: read failed after 0 of 4096 at 61203218432: Input/output error /dev/dm-14: read failed after 0 of 4096 at 0: Input/output error Volume group "VGe1" successfully created [root at frodo pilpel10]# pvscan /dev/dm-11: read failed after 0 of 4096 at 5242814464: Input/output error /dev/dm-11: read failed after 0 of 4096 at 0: Input/output error /dev/dm-12: read failed after 0 of 4096 at 54460416: Input/output error /dev/dm-12: read failed after 0 of 4096 at 0: Input/output error /dev/dm-13: read failed after 0 of 4096 at 216895782912: Input/output error /dev/dm-13: read failed after 0 of 4096 at 0: Input/output error /dev/dm-14: read failed after 0 of 4096 at 61203218432: Input/output error /dev/dm-14: read failed after 0 of 4096 at 0: Input/output error PV /dev/sdc2 VG VGe1 lvm2 [296.13 GB / 296.13 GB free] PV /dev/sda2 VG VG00 lvm2 [232.78 GB / 1.78 GB free] Total: 2 [528.91 GB] / in use: 2 [528.91 GB] / in no VG: 0 [0 ] [root at frodo pilpel10]# lvcreate -L 202G -n LVbiogateBAK_home VGe1 /dev/dm-11: read failed after 0 of 4096 at 0: Input/output error /dev/dm-12: read failed after 0 of 4096 at 0: Input/output error /dev/dm-13: read failed after 0 of 4096 at 0: Input/output error /dev/dm-14: read failed after 0 of 4096 at 0: Input/output error Logical volume "LVbiogateBAK_home" created </quote>