Centos VM, SCSI external USB Hard Drive

[xander86]

I am a bit of a linux newbie but I have Hyper-V running Centos 7. I have a external hard drive plugged into the physical server with USB. In hyper-v I have it on SCSI port 2. The hard drive is a NTFS drive. I ran dmesg and found this:

[ 1.936087] sd 0:0:0:2: [storvsc] Sense Key : Illegal Request [current]
[ 1.936090] sd 0:0:0:2: [storvsc] Add. Sense: Invalid command operation code
[ 11.947182] sd 0:0:0:2: Device offlined - not ready after error recovery
[ 11.947223] sd 0:0:0:2: rejecting I/O to offline device
[ 11.947265] sd 0:0:0:2: rejecting I/O to offline device
[ 11.947300] sd 0:0:0:2: [sdb] Read Capacity(16) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 11.947302] sd 0:0:0:2: [sdb] Sense not available.
[ 11.947306] sd 0:0:0:2: rejecting I/O to offline device
[ 11.947338] sd 0:0:0:2: rejecting I/O to offline device
[ 11.947369] sd 0:0:0:2: rejecting I/O to offline device
[ 11.947402] sd 0:0:0:2: [sdb] Read Capacity(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
[ 11.947404] sd 0:0:0:2: [sdb] Sense not available.
[ 11.947407] sd 0:0:0:2: rejecting I/O to offline device
[ 11.947439] sd 0:0:0:2: rejecting I/O to offline device
[ 11.947471] sd 0:0:0:2: rejecting I/O to offline device
[ 11.947503] sd 0:0:0:2: [sdb] Write Protect is off
[ 11.947506] sd 0:0:0:2: [sdb] Mode Sense: 00 00 00 00
[ 11.947509] sd 0:0:0:2: rejecting I/O to offline device
[ 11.947540] sd 0:0:0:2: [sdb] Asking for cache data failed
[ 11.947571] sd 0:0:0:2: [sdb] Assuming drive cache: write through
[ 11.949770] sd 0:0:0:2: [sdb] Attached SCSI disk
[ 11.951304] sd 0:0:0:1: [sdc] 2155872256 512-byte logical blocks: (1.10 TB/1.00 TiB)
[ 11.951309] sd 0:0:0:1: [sdc] 4096-byte physical blocks
[ 11.953082] sd 0:0:0:0: [sda] Write Protect is off
[ 11.953087] sd 0:0:0:0: [sda] Mode Sense: 0f 00 00 00
[ 11.953171] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 11.953529] sd 0:0:0:1: [sdc] Write Protect is off
[ 11.953533] sd 0:0:0:1: [sdc] Mode Sense: 0f 00 00 00
[ 11.953625] sd 0:0:0:1: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 11.955588] sdc:
[ 11.959130] sd 0:0:0:1: [sdc] Attached SCSI disk
[ 11.959848] sda: sda1 sda2 sda3
[ 11.960734] sd 0:0:0:0: [sda] Attached SCSI disk

Any help would be amazing, I cannot figure this out. I cant see it with fdisk, blkid, or lsblk (only lsblk -a).

[TrevorH]

If that log is from the guest to which you have attached the drive then it's there and it's /dev/sda. As root you ought to be able to access it and use fdisk etc on it but you shouldn't need to do so since it's already partitioned. If the filesystems on it are NTFS then you will need to install ntfs-3g from the EPEL repo - yum install epel-release - then yum install ntfs-3g.