the server is attached to SAN through 2xHBA's using RHEL5 multipath I built a LUN0 (50G) with sdd/sdb expanded through another LUN(50G) sdc/sde the /dev/dm-2 shows 100G space but on the same time the sdc/sde shows error I/O any help? [root@linux1 ftp]# fdisk -l Disk /dev/sda: 72.7 GB, 72746008576 bytes 255 heads, 63 sectors/track, 8844 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 1 5 40131 de Dell Utility /dev/sda2 * 6 1543 12353985 83 Linux /dev/sda3 1544 1556 104422+ 83 Linux /dev/sda4 1557 8844 58540860 5 Extended /dev/sda5 1557 8844 58540828+ 8e Linux LVM Disk /dev/sdb: 107.3 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdb doesn't contain a valid partition table Disk /dev/sdd: 107.3 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/sdd doesn't contain a valid partition table Disk /dev/dm-2: 107.3 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk /dev/dm-2 doesn't contain a valid partition table [root@linux1 ftp]# multipath -ll 360060160ddd01d0094a512bdfb8adc11dm-2 DGC,RAID 5 [size=100G][features=1 queue_if_no_path][hwhandler=1 emc] \_ round-robin 0 [prio=2][active] \_ 1:0:0:0 sdb 8:16 [active][ready] \_ 2:0:0:0 sdd 8:48 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 1:0:1:0 sdc 8:32 [active][ready] \_ 2:0:1:0 sde 8:64 [active][ready] [root@linux1 ftp]# multipath -v2 -ll 360060160ddd01d0094a512bdfb8adc11dm-2 DGC,RAID 5 [size=100G][features=1 queue_if_no_path][hwhandler=1 emc] \_ round-robin 0 [prio=2][active] \_ 1:0:0:0 sdb 8:16 [active][ready] \_ 2:0:0:0 sdd 8:48 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 1:0:1:0 sdc 8:32 [active][ready] \_ 2:0:1:0 sde 8:64 [active][ready] [root@linux1 ftp]# pvscan /dev/sdc: read failed after 0 of 4096 at 0: Input/output error /dev/sdc: read failed after 0 of 4096 at 107374116864: Input/output error /dev/sdc: read failed after 0 of 4096 at 0: Input/output error /dev/sde: read failed after 0 of 4096 at 0: Input/output error /dev/sde: read failed after 0 of 4096 at 107374116864: Input/output error /dev/sde: read failed after 0 of 4096 at 0: Input/output error PV /dev/sda5 VG VolGroup00 lvm2 [55.81 GB / 0 free] PV /dev/dm-2 VG linux1 lvm2 [100.00 GB / 100.00 GB free] Total: 2 [155.81 GB] / in use: 2 [155.81 GB] / in no VG: 0 [0 ] [root@linux1 ftp]# dmesg | tail end_request: I/O error, dev sde, sector 0 Buffer I/O error on device sde, logical block 0 sd 2:0:1:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sde, sector 209715192 Buffer I/O error on device sde, logical block 26214399 sd 2:0:1:0: Device not ready: <6>: Current: sense key: Not Ready Additional sense: Logical unit not ready, manual intervention required end_request: I/O error, dev sde, sector 0 Buffer I/O error on device sde, logical block 0 -- madunix -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list