similar to: LVM and thin snapshots

Hi , You can also check if BOOM boot manager can work with thin LVM. I really like that feature, since CentOS7.x Best Regards, Strahil NikolovOn Sep 27, 2019 12:39, Georgios <gpdsbe+centos at mailbox.org> wrote: > > Hi there! > > Im new here. > > Im trying to install Centos 8 on my laptop. I also want to have a > contingency plan in case something brakes. >

I know that lvm supports thin provisioning, and I think I have a pretty good grasp on how that works. Does libvirt support lvm thin provisioning and thin snapshots? I know that in order to set up lvm thin provisioning by hand, I have to create a thin-provisioning pool within the volume group, and then thin-provisioned logical volumes and thin-provisioned snapshots can be created within that

Please don't use lvm thin for vm. In our hosting in Russia we have 100-150 vps on each node with lvm thin pool on ssd and have locks, slowdowns and other bad things because of COW. After we switching to qcow2 files on plain ssd ext4 fs and happy =). 2017-11-04 23:21 GMT+03:00 Jan Hutař <jhutar@redhat.com>: > Hello, > as usual, I'm few years behind trends so I have learned

On 08/02/2014 04:24 PM, Vasiliy Tolstov wrote: > Hi all. I'm using libvirt 1.2.6 > I want to use lvm storage for my virtual machines. > But i want to use new lvm2 feature - thin pool. How can i do that in > libvirt? If libvirt can't create it via pool xml, does (and how) to > use this setup under libvirt? > The 'Thin Pool' is avoided by libvirt, but volumes

Do you have some comparasion of IO performance on thin pool vs. qcow2 file on fs? In my case each VM would have its own thin volume. I just want to overcommit disk-space. Regards, Jan On 2017-11-07 13:16 +0300, Vasiliy Tolstov wrote: >Please don't use lvm thin for vm. In our hosting in Russia we have >100-150 vps on each node with lvm thin pool on ssd and have locks, >slowdowns

On Tue, 03 Dec 2013 18:13:08 +0100 Oliver Brakmann <oliver.brakmann@posteo.de> wrote: > Hello, > > On 2013-11-22 21:46, Michael Mol wrote: > > I know that lvm supports thin provisioning, and I think I have a > > pretty good grasp on how that works. Does libvirt support lvm thin > > provisioning and thin snapshots? > > libvirt does not support storage pools

Hello, On 2013-11-22 21:46, Michael Mol wrote: > I know that lvm supports thin provisioning, and I think I have a pretty > good grasp on how that works. Does libvirt support lvm thin > provisioning and thin snapshots? libvirt does not support storage pools containing thin pools. Since commit 4132dede0652b7f0cc83868fd454423310bc1a9c

Hi All I'm trying to setup my LVM thin pool to support discards so that the pool can reclaim space even if the underlying device doesn't support trim. It is my understanding that all thin pools should support trim even if the underlying device doesn't. (please correct me if I'm wrong here) I have one centos server that does support trim and everything is working correctly but any

Hi there. I'm trying to use thin provisionned LVM for som eguests, and I'm having a problem. Until now, I use LVM pool with success. Here's my pool definition: <pool type='logical'> <name>data</name> <uuid>7f18e030-9d2d-805e-c65f-d12d0681b0a9</uuid> <capacity unit='bytes'>0</capacity> <allocation

Hi, I have a gluster cluster running with geo-replication. The volume that is being geo-replicated is running on a LVM thin pool. The thin pool overflowed causing a crash. I extended the thin pool LV and remounted which brought the volume back online and healthy. When I try to restart the geo-replication, I'm having the bricks that overflowed go to the Faulty state. The changes.log shows

Hi, I have a gluster cluster running with geo-replication. The volume that is being geo-replicated is running on a LVM thin pool. The thin pool overflowed causing a crash. I extended the thin pool LV and remounted which brought the volume back online and healthy. When I try to restart the geo-replication, I'm having the bricks that overflowed go to the Faulty state. The changes.log shows

Hello, as usual, I'm few years behind trends so I have learned about LVM thin volumes recently and I especially like that your volumes can be "sparse" - that you can have 1TB thin volume on 250GB VG/thin pool. Is it somehow possible to use that with libvirt? I have found this post from 2014: https://www.redhat.com/archives/libvirt-users/2014-August/msg00010.html which says

In the past, I've used LVM on MD RAID, and I'd like to try using LVM RAID in order to also add dm-integrity data to some LVs.? I've added new PVs to my VG, and I've converted some of my LVs to raid1 types, but I also have one thin pool that I use for VMs with multiple layers of snapshots.? That pool can't be converted, directly: # lvconvert --type raid1 -m 1

On Tue, 03 Dec 2013 13:23:37 -0700 Eric Blake <eblake@redhat.com> wrote: > On 12/03/2013 12:37 PM, Michael Mol wrote: > > > A pity. Thin provisioning would be (as I see it) the first step to > > whole-VM snapshots as found in systems like VMWare ESX. I'd love to > > be able to pull that off using Linux/QEMU/KVM. Or at least be able > > to snapshot a

On 12/03/2013 12:37 PM, Michael Mol wrote: > A pity. Thin provisioning would be (as I see it) the first step to > whole-VM snapshots as found in systems like VMWare ESX. I'd love to be > able to pull that off using Linux/QEMU/KVM. Or at least be able to > snapshot a running VM's disk to be able to pull backups off the > snapshot without interrupting service in the VM

Volumes are aggregation of bricks, so I would consider bricks as a unique entity here rather than volumes. Taking the constraints from the blog [1]. * All bricks should be carved out from an independent thinly provisioned logical volume (LV). In other words, no two brick should share a common LV. More details about thin provisioning and thin provisioned snapshot can be found here. * This thinly

Hi, Is it possible to create a storage pool based on an LVM thin pool? I read a recent bugzilla but the problem there was that the storage-pool became unusable AFTER creating a thinpool which is a different case. Thanks, Jorge

On 09/09/13 03:53, Jorge Fábregas wrote: > Hi, > > Is it possible to create a storage pool based on an LVM thin pool? I > read a recent bugzilla but the problem there was that the storage-pool > became unusable AFTER creating a thinpool which is a different case. Could you paste the bug number? > > Thanks, > Jorge > >

Hello, I am preparing a brick as LVM thin volume for a test slave node using this documentation: https://docs.gluster.org/en/main/Administrator-Guide/formatting-and-mounting-bricks/ but I am confused regarding the right "--dataalignment" option to be used for pvcreate. The documentation mentions the following under point 1: "Create a physical volume(PV) by using the pvcreate

On 06/25/2015 06:44 PM, Chris Murphy wrote: > Gordon Messmer gordon.messmer at gmail.com Wed Jun 24 01:42:13 UTC 2015 > >> I wondered the same thing, especially in the context of someone who >> prefers virtual machines. LV-backed VMs have *dramatically* better disk >> performance than file-backed VMs. > I did a bunch of testing of Raw, qcow2, and LV backed VM storage