[linux-lvm] volume developing problems even though should be static...

[linux-lvm] volume developing problems even though should be static...

[Linda A. Walsh]

I needed extra space on my home partition, and speed, so I disabled my
 snapshoting cron job and deleted any logical jobs for now.

But during this transition time, I've started getting some were symptoms.
Now when I do a "pvs", I see:

# pvs
  /dev/dm-1: read failed after 0 of 4096 at 0: Input/output error
  PV         VG   Fmt  Attr PSize   PFree  
  /dev/sdb1  Home lvm2 a-   888.48G      0 
  /dev/sdb2  Home lvm2 a-   888.48G 640.96G
  /dev/sdb3  Home lvm2 a-   584.87G 584.87G
# vgs
  /dev/dm-1: read failed after 0 of 4096 at 0: Input/output error
  VG   #PV #LV #SN Attr   VSize VFree
  Home   3   7   6 wz--n- 2.31T 1.20T
# lvs
  /dev/dm-1: read failed after 0 of 4096 at 0: Input/output error                      
  lvol0               Home -wi-ao  1.00T                                      

-----------------------------------------------
So, the "output of the commands looks mostly 'right', as near as I can tell: 3 physical volumes, 
-> 1 volume group with the 3 volumes, and
1 logical volume taking up space in that pv (only using part of the space).

What I don't get and what worries me a fair amount are the I/O errors --
any idea what's going on and how I shoudl fix this?

Thanks much!
linda

Re: [linux-lvm] volume developing problems even though should be static...

[Ray Morris]

> so I disabled my  snapshoting cron job and deleted any
> logical jobs for now

dm-1 may be a volume (snapshot?) you deleted.  Check with:
cat /sys/block/dm-1/dm/name

    Why it's trying to read something that has been deleted
I don't know, but I know I get the same problem.
--
Ray Morris
support@bettercgi.com

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On 04/21/2010 12:45:48 AM, Linda A. Walsh wrote:
> I needed extra space on my home partition, and speed, so I disabled my
>  snapshoting cron job and deleted any logical jobs for now.
> 
> But during this transition time, I've started getting some were  
> symptoms.
> Now when I do a "pvs", I see:
> 
> # pvs
>   /dev/dm-1: read failed after 0 of 4096 at 0: Input/output error
>   PV         VG   Fmt  Attr PSize   PFree
>   /dev/sdb1  Home lvm2 a-   888.48G      0
>   /dev/sdb2  Home lvm2 a-   888.48G 640.96G
>   /dev/sdb3  Home lvm2 a-   584.87G 584.87G
> # vgs
>   /dev/dm-1: read failed after 0 of 4096 at 0: Input/output error
>   VG   #PV #LV #SN Attr   VSize VFree
>   Home   3   7   6 wz--n- 2.31T 1.20T
> # lvs
>   /dev/dm-1: read failed after 0 of 4096 at 0: Input/output error
>   lvol0               Home -wi-ao  1.00T
> 
> -----------------------------------------------
> So, the "output of the commands looks mostly 'right', as near as I  
> can tell: 3 physical volumes,
> -> 1 volume group with the 3 volumes, and
> 1 logical volume taking up space in that pv (only using part of the  
> space).
> 
> What I don't get and what worries me a fair amount are the I/O errors  
> --
> any idea what's going on and how I shoudl fix this?
> 
> Thanks much!
> linda
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> 
> 

Re: [linux-lvm] volume developing problems even though should be static...

[Stuart D. Gathman]

On Tue, 20 Apr 2010, Linda A. Walsh wrote:

> What I don't get and what worries me a fair amount are the I/O errors --
> any idea what's going on and how I shoudl fix this?

Looks dm-1 is a snapshot that is full.  Did you edit lvs output?
Perhaps the snapshot was removed, but something still has it open.

-- 
	      Stuart D. Gathman <stuart@bmsi.com>
    Business Management Systems Inc.  Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.

Re: [linux-lvm] volume developing problems even though should be static...

[Luca Berra]

On Tue, Apr 20, 2010 at 10:45:48PM -0700, Linda A. Walsh wrote:
>I needed extra space on my home partition, and speed, so I disabled my
> snapshoting cron job and deleted any logical jobs for now.
>
>But during this transition time, I've started getting some were symptoms.
>Now when I do a "pvs", I see:
>
># pvs
>  /dev/dm-1: read failed after 0 of 4096 at 0: Input/output error
please provide "dmsetup ls" and "dmsetup status" so we might know what
/dev/dm-1 is.

L.

-- 
Luca Berra -- bluca@comedia.it
         Communication Media & Services S.r.l.
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