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Re: [linux-lvm] Bad disk?



On 11/10/2010 10:11 AM, Phillip Susi wrote:
On 11/10/2010 9:39 AM, Mauricio Tavares wrote:
Yesterday I added a hard drive (to put extra stuff on it) to my ubuntu
10.10 box and created a LVM in it. Then copied some files to it and
restarted the machine to see if it would mount into the right
mountpoint. It didn't. So I decided to see if it was there (vg in
question is export):

None of the errors you posted mention a physical disk at all, so there
isn't anything wrong with them.  To find out what dm-0 is you need to
poke around with dmsetup.

Now that might be interesting since I honestly do not know how to use it (and my google-fu seems weak today). But this is a bit more info I found:

raub strangepork:~$ sudo pvs -a
  /dev/dm-0: read failed after 0 of 4096 at 0: Input/output error
/dev/dm-0: read failed after 0 of 4096 at 429496664064: Input/output error /dev/dm-0: read failed after 0 of 4096 at 429496721408: Input/output error
  /dev/dm-0: read failed after 0 of 4096 at 0: Input/output error
  /dev/dm-0: read failed after 0 of 4096 at 4096: Input/output error
  /dev/dm-0: read failed after 0 of 4096 at 0: Input/output error
  PV         VG     Fmt  Attr PSize   PFree
  /dev/dm-0              --        0       0
  /dev/dm-1  root   lvm2 a-   277.05g 192.55g
  /dev/dm-2              --        0       0
  /dev/dm-3              --        0       0
  /dev/dm-4              --        0       0
  /dev/dm-5              --        0       0
  /dev/ram0              --        0       0
  /dev/ram1              --        0       0
  /dev/ram10             --        0       0
  /dev/ram11             --        0       0
  /dev/ram12             --        0       0
  /dev/ram13             --        0       0
  /dev/ram14             --        0       0
  /dev/ram15             --        0       0
  /dev/ram2              --        0       0
  /dev/ram3              --        0       0
  /dev/ram4              --        0       0
  /dev/ram5              --        0       0
  /dev/ram6              --        0       0
  /dev/ram7              --        0       0
  /dev/ram8              --        0       0
  /dev/ram9              --        0       0
  /dev/root              --        0       0
  /dev/sda1              --        0       0
  /dev/sda3              --        0       0
  /dev/sdc1  export lvm2 a-   465.76g  65.76g
raub strangepork:~$

FYI, the root vg in inside /dev/sda3, which is an encrypted partition. How can I find which drive /dev/dm-0 is?


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