similar to: libvirt and lvm thin pool

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

Hi All, I'm having issue with creating LVM Volume via libvirt. We are running libvirtd 1.2 with KVM. We are creating Volume Group (VG01) outside of libvirt and defining a storage pool for it. Here is the StoragePool XML for the Volume Group created outside libvirt. <pool type="logical"> <name>VG01</name> <target>

Hello, I was doing performance testing, validating zvol performance in particularly, and found that zvol write performance to be slow ~35-44MB/s at 1MB blocksize writes. I then tested the underlying zfs file system with the same test and got 121MB/s. Is there any way to fix this? I really would like to have compatible performance between the zfs filesystem and the zfs zvols. # first test is a

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

Thank you for the quick response. > Strange way to do this, as libguestfs can do all this. Sorry to ask this (I'm a newly graduated engineer and I new to the virtualization world), but how can libguestfs do all of the above?, do you mean it can create all the partitions inside a new lvm volume or a new raw image?? > Did you copy the syslinux.cfg file into the guest? The error message

Hi all, I had centos 5.9 installed with one of its volumes (non-root) on LVM: ... /dev/vgapps/lvapps /opt/apps ext3 defaults 1 2 ... Then installed centos 6.4 on this servers but without exporting this volume (I wanted to reuse it). After that instead importing it I did: # pvcreate /dev/sddlmac # vgcreate vgapps /dev/sddlmac And then realised that I should have

i''ve installed XCP 1.5-beta. i''m a little confused as to what has happened. everything so far seems to work. however, i need more information on what was done to my hard disk during the installation and how was the file system set up. in particular, i was investigating how to create a new logical volume to place my ISO file to use as my ISO storage (SR). i notice (see below with

Greetings All, I was running libvirt-0.9.10 on CentOS 6.3 and it was working perfectly until yesterday when I decided to update to 6.4, which upgraded libvirt-0.9.10 to libvirt-0.10.2. I have a storage pool of type volume group, upon upgrading to libvirt-0.10.2, the disk image gets created as a snapshot on the volume group not as a regular volume. Now every time I create a vm using

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

this has never happened to me before, and I'm somewhat at a loss. got a email from the cron thing... /etc/cron.weekly/99-raid-check: WARNING: mismatch_cnt is not 0 on /dev/md10 WARNING: mismatch_cnt is not 0 on /dev/md11 ok, md10 and md11 are each raid1's made from 2 x 72GB scsi drives, on a dell 2850 or something dual single-core 3ghz server. these two md's are in

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

<humor for the day>Why don't we discuss something ***less*** controversial, like politics or religion?</humor for the day> ----- Original Message ----- From: "Karanbir Singh" <mail-lists at karan.org> To: "centos" <centos at centos.org> Sent: Wednesday, April 12, 2017 6:19:43 AM Subject: Re: [CentOS] OT: systemd Poll On 09/04/17 05:39, Anthony K

Dear James, Thank you for being quick to help. Yes, I could see all of them: # vgs # lvs # pvs Regards, Khem On Sat, February 28, 2015 7:37 am, James A. Peltier wrote: > > > ----- Original Message ----- > | Dear All, > | > | I am in desperate need for LVM data rescue for my server. > | I have an VG call vg_hosting consisting of 4 PVs each contained in a > | separate

On Mon, Jun 05, 2017 at 07:52:58PM -0400, Michael C Cambria wrote: > > >On 06/05/2017 10:46 AM, Martin Kletzander wrote: >> On Sun, Jun 04, 2017 at 06:42:39PM -0400, Michael C Cambria wrote: >>> I've upgraded from Fedora 20; probably missed a merge of rpmnew with >>> existing .conf; permission problem, some other mistake along the way to >>> Fedora 25.

Hello all, I am running dovecot- 2.3.5.2 with mdbox storage. I deleted the dovecot.index* from all my folders, which led to mails not being displayed. I rebuilt the indexes for all the users after that, using: doveadm force-resync -u user at domain "*" However, the problem now is that Outlook,configured for IMAP, is not able to sync the mails with the server. I can login to the server

I am seeing the following errors in my logs, which I believe are preventing Outlook from syncing. How do I solve these? Can I just delete the index.cache?? Jun 18 11:23:34 imap(technical at mydomain.co.ke)<59754><g5UC1JSLPhkpUFt/>: Error: Corrupted record in index cache file /var/spool/virtual/ mydomain.co.ke/technical/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.cache: UID 29:

On 06/06/2017 08:17 AM, Michael C. Cambria wrote: > > > On 06/06/2017 04:43 AM, Martin Kletzander wrote: >> On Mon, Jun 05, 2017 at 07:52:58PM -0400, Michael C Cambria wrote: >>> >>> >>> On 06/05/2017 10:46 AM, Martin Kletzander wrote: >>>> On Sun, Jun 04, 2017 at 06:42:39PM -0400, Michael C Cambria wrote: >>>>> I've upgraded

Hello CentOS community members, A hardware vendor provided us with a .qcow2 file to run on our KVM hypervisor file that will monitor/control said hardware (firewall). I'd like to import this .qcow2 to run as a logical volume (named 'server3') in an existing logical group named 'centos' on our CentOS Linux release 7.1.1503 server. Right now the .qcow2 file is sitting

I have a problem with two entries in my /etc/fstab. When I boot the machine, the disks are not mounted. When I give mount -a, all disks are present without an error. Of course I don't want to manually do that after each reboot. What can be the problem? CentOS 5.2 cat /etc/fstab /dev/vg/centos / ext3 defaults 1 1 LABEL=/boot /boot