snapshots

Submitted by masterg0g0 on Thu, 01/04/2018 - 08:16 Pro Licensee

hello,

I playing around the snapshot functions and after 2 tries.. i started to see this error... on the host.. i can confirm that i am able to create a snapshot on other guests on this same machine.. but this one fails with the below error?

anyway we could get this resolved? will a restart of the host fix this ?

Creating snapshot of system server2.interstellarconsulting.com .. .. failed : /dev/vg0/email.cloudmin.interstellarconsulting.com_0_1_snap: read failed after 0 of 4096 at 137438887936: Input/output error /dev/vg0/email.cloudmin.interstellarconsulting.com_0_1_snap: read failed after 0 of 4096 at 137438945280: Input/output error /dev/vg0/email.cloudmin.interstellarconsulting.com_0_1_snap: read failed after 0 of 4096 at 0: Input/output error /dev/vg0/email.cloudmin.interstellarconsulting.com_0_1_snap: read failed after 0 of 4096 at 4096: Input/output error Snapshots of an origin that has a merging snapshot is not supported

Status: 
Closed (fixed)

Comments

Submitted by masterg0g0 on Fri, 01/19/2018 - 10:24 Pro Licensee

...moved to separate thread.

Submitted by JamieCameron on Tue, 01/16/2018 - 23:34

Those seem like unrelated problems, so let's focus on the first one.

Is the VM that you're trying to snapshot itself a previous clone of another VM?

Submitted by masterg0g0 on Wed, 01/17/2018 - 14:48 Pro Licensee

hello, no i havent created any clones ..

Submitted by masterg0g0 on Wed, 01/17/2018 - 15:54 Pro Licensee

now thinking back, this particular email.cloudmin.interstellarconsulting.com_0_1_snap VM was made from a image which i got it from the provider and then imported the image and then boot off it.. i might have cloned it to be safe... but i am not 100% sure.. nevertheless, the snapshot worked fine once or twice.. and then it broke down when i tried it recently..

Submitted by JamieCameron on Wed, 01/17/2018 - 18:52

Unfortunately, LVM doesn't allow creation of a snapshot of a snapshot, and Cloudmin clones VMs using snapshotting. The only work-around is to create an image of the VM, then delete and re-create it from that image.

Submitted by masterg0g0 on Fri, 01/19/2018 - 10:18 Pro Licensee

ok i shall try do this, and hopefully this problem goes away once for all.. i will update this thread back once i have done this..

Submitted by masterg0g0 on Fri, 01/19/2018 - 12:53 Pro Licensee

question though, do i have to worry the swap partition when i create the new guest from this so called image file?

Submitted by masterg0g0 on Sat, 01/20/2018 - 04:15 Pro Licensee

Ok so i did as you suggested, created the image and reinstalled .. and both snapshot and resizing of the disks on the guest are working fine..

Submitted by JamieCameron on Sat, 01/20/2018 - 14:03

Great! Unfortunately, the inability to resize or snapshot snapshots is a limitation of Linux LVM.

Submitted by JamieCameron on Sat, 01/20/2018 - 14:11

The next release of Cloudmin will detect this situation and show a more useful error message earlier in the process.

Submitted by IssueBot on Thu, 10/11/2018 - 20:07

Status: Fixed ยป Closed (fixed)

Automatically closed - issue fixed for 2 weeks with no activity.