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.
On Thu, 2006-03-16 at 21:33 +1000, 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.
Hold off just a little bit and the entire 4.3 distro will come out with some new lvm tools (a couple days). That might clear up your issue.
Johnny Hughes wrote:
On Thu, 2006-03-16 at 21:33 +1000, 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.
Hold off just a little bit and the entire 4.3 distro will come out with some new lvm tools (a couple days). That might clear up your issue.
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Thanks Johnny. I managed to clear it up. See my follow up post.
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.
CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
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 !
On Thu, 2006-03-16 at 21:33 +1000, 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.
You might want to post a description of your problem on the LVM list. The LVM developers have been good about helping folks out of this sort of jam before.
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Bards1888 -
David Johnston -
Johnny Hughes