LVM Snapshots -broken ? Ever worked ?

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Bards1888 wrote:

>I've upgraded my x86_64 4.2 box to the latest kernel 2.6.9.34 and tried
>an lvm snapshot. It worked fine and I was able to mount the snapshot
>etc. Now I cannot seem to remove the snapshot.   If I try a 'lvremove'
>it asks if I want to remove the 'active' snapshot, if I say yes it just
>hangs and the box goes to 99% wait io, however the disk lights do not
>come on during this. The lvremove process is not straceable so I've got
>no idea whats going on with it.
>
>Luckily I  chose to snapshot /tmp so it is not a show stopper. What I
>did to get around it was to comment out my tmp lv from fstab and just
>allow /tmp to be part of the root filesystem on the root lv.  I
>deliberately filled up the snapshot so that it was marked inactive but
>it still thinks it is active when I run the lvremove command again. I
>also tried to lvremove the tmp lv, not the snapshot, and it  said it
>couldnt remove the lv while there was a snapshot.
>
>
>I found a thread on the forums where Karanbir Singh states that this
>sort of thing was broken in early 4 series but may work in 4.3.
>
>
>Does anyone know how I can clean this up ?
>
>
>Cheers,
>
>
>Bards.
>
>
>
>
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>  
>
Ok, for the record, I was able to remove the snapshot when I booted from
a system rescue CD (http://www.sysresccd.org/), it came up with the vgs
disable and I was able to remove the old snapshot.


I will not be trying snapshots again in a hurry !



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