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Ubuntu 12.04 system

I have an LVM2 created spanning 3 drives. Lately I've been getting errors reading files over my network; causing me to investigate

lvscan:

Code:

root@saturn:~# lvscan

  /dev/dm-0: read failed after 0 of 4096 at 0: Input/output error

  /dev/dm-0: read failed after 0 of 4096 at 1980550283264: Input/output error

  /dev/dm-0: read failed after 0 of 4096 at 1980550340608: Input/output error

  /dev/dm-0: read failed after 0 of 4096 at 4096: Input/output error

  /dev/dm-1: read failed after 0 of 4096 at 5981345873920: Input/output error

  /dev/dm-1: read failed after 0 of 4096 at 5981345931264: Input/output error

  Couldn't find device with uuid tgxVi7-KIwG-FX9U-U52T-56Ss-jKxi-La3xon.

  ACTIVE            '/dev/saturn/titan' [5.44 TiB] inherit

This was after
e2fsch ran against it:

/dev/saturn/titan: ***** FILE SYSTEM WAS MODIFIED *****
/dev/saturn/titan: 437614/365076480 files (8.6% non-contiguous), 827595696/1460289536 blocks

I think my /dev/sdd device is hosed; but I'm not sure what else to do with this mess

You may need to remove the LV with DM setup. (If that is what you want to do.) Here's how:

# dmsetup info -c /dev/MBPCStorage/MBPCBackup
# dmsetup remove MBPCStorage-MBPCBackup

RAID? Is LVM just spanning? What FS? Otherwise you might need some LVM Recovery help due to your last error:

>Couldn't find device with uuid tgxVi7-KIwG-FX9U-U52T-56Ss-jKxi-La3xon.

Gather more stats then post back. The more bits and pieces the better. (hint: smartctl)

Cheers,