similar to: Installing problem with only a LVM logical volume as DomU partition and no complete disk

Side note: In CentOS-6, I noticed a new option in lvresize / lvextend: -r, --resizefs Resize underlying filesystem together with the logical volume using fsadm(8). Nice. Two steps (lvresize and resize2fs) can now be combined into one! Works great. But that has nothing to do with my question, just thought I'd share the discovery. == Anyway, here's

On 6/25/2015 8:50 AM, Robert Heller wrote: > man vgdisplay > man lvdisplay > man lvcreate > man lvextend > man lvresize > man lvreduce > man lvremove > man e2fsck > man resize2fs man xfs_growfs -- john r pierce, recycling bits in santa cruz

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>

Robert Heller wrote: > At Thu, 25 Jun 2015 11:03:18 -0400 CentOS mailing list <centos at centos.org> > wrote: >> On Wed, June 24, 2015 16:11, Chuck Campbell wrote: >> > >> > Is there an easy to follow "howto" for normal LVM administration >> > tasks. I get tired of googling every-time I have to do something >> > I don't remember

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

----- Original Message ----- | On 6/25/2015 8:50 AM, Robert Heller wrote: | > man vgdisplay | > man lvdisplay | > man lvcreate | > man lvextend | > man lvresize | > man lvreduce | > man lvremove | > man e2fsck | > man resize2fs | | man xfs_growfs You forgot man "this opinion thread is getting really long" -- James A. Peltier IT Services - Research Computing

At Thu, 25 Jun 2015 11:03:18 -0400 CentOS mailing list <centos at centos.org> wrote: > > > On Wed, June 24, 2015 16:11, Chuck Campbell wrote: > > > > Is there an easy to follow "howto" for normal LVM administration > > tasks. I get tired of googling every-time I have to do something > > I don't remember how to do regarding LVM, so I usually

On Thu, 2015-06-25 at 11:50 -0400, Robert Heller wrote: > At Thu, 25 Jun 2015 11:03:18 -0400 CentOS mailing list < > centos at centos.org> wrote:HA! You only really need to learn *one* > command: the man command. > The man > provides 'enlightenment' for all other commands: > man vgdisplay > man lvdisplay > man lvcreate > man lvextend > man lvresize

Hi all, I'm having problems to create/resize an lv up to 1T (well I can't reach 300G), my system is a CentOS 5.1 x86_64 on a Dell 2950 with 6x500G SATA (RAID5 to aprox. 2.5T) [root at Mugello ~]# fdisk -l Disk /dev/sda: 2497.7 GB, 2497791918080 bytes 255 heads, 63 sectors/track, 303672 cylinders Units = cilindros of 16065 * 512 = 8225280 bytes Dispositivo Boot Start

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

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

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

Hi -- I forgot to remove an LVM snapshot after making a backup. Now neither the snapshot nor the original volume are available. How do I recover and get the original volume back online? Currently, the output of lvs looks like LV VG Attr LSize Origin Snap% Move Log Copy% ...... dom5_data VolGroup01 -wi-ao 10.00G

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

Hi all One user at centos-es mailing list, point that: [1] "Expanding a LVM logical volume" translation to Spanish needs an update: http://wiki.centos.org/es/TipsAndTricks/ExpandLV Please, could you give me edit rights on that page to update it ? My username is HardyBeltran, I'm an usual contributor to "Release Notes" translation to Spanish. Thanks for your help [1]

Hi, I'm trying to get KVM VMs set up right on top of DRBD, with a dedicated DRBD mirror instance on top of a dedicated pair of LVM LVs per VM - allowing, for instance, primary-secondary DRBD assignments at the same granularity as the VMs. In other words, I want to put VMs in raw format directly to the DRBD block device, just as they are commonly put to an LV block device, with the DRBD block

Anybody know a way to enlarge a filesystem ext3 without having to unmounted it, when they are still space left in the volume group (when using LVM) ? I will be running large production linux system running Oracle. I can't stop the database everytime I have to enlarge a filesystem. We can do it with all others filesystems (JFS, REISERSFS and XFS) when they are created in a volume group. Why

Hello after a lvm snapshot creation and a reboot are all logical volumes are missing, only swap is present. lvcreate -L 5000M -s -n centos_h1-root_snap /dev/mapper/centos_h1-root lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert centos_h1-root_snap centos_h1 swi-a-s--- 4,88g root 0,00 home

I'm trying to setup a LVM mirror on 2 iSCS targets, but can't. I have added both /dev/sda & /dev/sdb to the LVM-RAID PV, and both have 500GB space. [root at HP-DL360 by-path]# pvscan PV /dev/cciss/c0d0p2 VG LVM lvm2 [136.59 GB / 2.69 GB free] PV /dev/sda VG LVM-RAID lvm2 [500.00 GB / 490.00 GB free] PV /dev/sdb VG LVM-RAID lvm2 [502.70 GB /

On Wed, Dec 02, 2015 at 08:53:39PM +0100, Axel Glienke wrote: > Creating snapshot: > > [root at lvmtest ~]# lvcreate -L5G -s -n root_snap /dev/centos/root > Reducing COW size 5,00 GiB down to maximum usable size 2,94 GiB. > Logical volume "root_snap" created. > [root at lvmtest ~]# lvs > LV VG Attr LSize Pool Origin Data% Meta% Move > Log