similar to: Configure File System for Shadow Copy

if I understand what you're asking, it's a good idea to keep your data partitions separate from your boot and application partitions. this applies to any server on pretty much any OS, and also applies to /home. so make a VG for sdb, and in case that guide isn't clear, don't make your logical volume take 100% of the VG or you won't have room for the shadows, which are actually

Hi list, I'm building a NFS server on top of CentOS 8. It has 8 x 8 TB HDDs and 2 x 500GB SSDs. The spinning drives are in a RAID-6 array. They are 4K sector size. The SSDs are in RAID-1 array and with a 512bytes sector size. I want to use the SSDs as a cache using dm-cache. So here what I've done so far: /dev/sdb ==> SSD raid1 array /dev/sdd ==> spinning raid6 array I've

Hello, I would really appreciate some help/guidance with this problem. First of all sorry for the long message. I would file a bug, but do not know if it is my fault, dm-cache, qemu or (probably) a combination of both. And i can imagine some of you have this setup up and running without problems (or maybe you think it works, just like i did, but it does not): PROBLEM LVM cache writeback

Are folks in the Centos community succesfully using device-mapper-multipath? I am looking to deploy it for error handling on our iSCSI setup but there seems to be little traffic about this package on the Centos forums, as far as I can tell, and there seems to be a number of small issues based on my reading the dm-multipath developer lists and related resources. -geoff Geoff Galitz Blankenheim

I am testing some kickstarts on ESXi virtual machine with pair of 16GB disks. Partitioning is lvm over raid. If i am using "logvol --grow i get "ValueError: not enough free space in volume group" Only workaround i can find is to add --maxsize=XXX where XXX is at least 640MB less than available. (10 extents or 320Mb per created logical volume) Following snippet is failing with

This hook script tries to address the fact that a RHEV-H installation will format all the storage devices available in the machine in order to create HostVG and AppVG with all the available space. It may be the case that RHEV-H needs to respect and co-exist with a proposed partitioning scheme, not getting all the storage space for HostVG and AppVG volume groups. The proposed solution adds the

I have a (CentOS4.5) cluster in which the servers mount a GFS partition which is an LVM2 logical volume created as a mirror of two iSCSI- connected drives (with a third for the log). The LV was created using a command along the lines of: lvcreate -m 1 ... /dev/sdb /dev/sdc /dev/sdd where sd[bc] are the mirrored (iSCSI) PVs in the VG and sdd is the log. I have this working and can write data

I thought I'd test replacing a failed drive in a 4 drive raid 10 array on a CentOS 5.2 box before it goes online and before a drive really fails. I 'mdadm failed, removed', powered off, replaced drive, partitioned with sfdisk -d /dev/sda | sfdisk /dev/sdb, and finally 'mdadm add'ed'. Everything seems fine until I try to create a snapshot lv. (Creating a snapshot lv

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

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2168506 This small set covers the new /dev/mapper/VG-LV "--key" ID format in the libguestfs LUKS-on-LVM inspection test. Thanks, Laszlo Laszlo Ersek (3): update common submodule LUKS-on-LVM inspection test: rename VGs and LVs LUKS-on-LVM inspection test: test /dev/mapper/VG-LV translation common

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2168506 This small set covers the new /dev/mapper/VG-LV "--key" ID format in the LUKS-on-LVM virt-inspector test. Thanks, Laszlo Laszlo Ersek (3): update common submodule inspector: rename VGs and LVs in LUKS-on-LVM test inspector: test /dev/mapper/VG-LV translation in LUKS-on-LVM test common

'--no-degraded' flag in the first mdadm call inhibits the startup of array unless all expected drives are present. This will prevent starting arrays in degraded state. Second mdadm call (after LVM is scanned) will scan unused yet devices and make an attempt to run all found arrays even they are in degraded state. Two new tests are added. This fixes rhbz1527852. Here is boot-benchmark

Hi. I added a disk to a hardware raid 5 array and now i want to expand the LVM physical volume. There are now 4 sas 146GB disks in the server. The virtual disk /dev/sdb from the raid controller has been resized successfully with the server management software osma. [root at srv1 ~]# fdisk -l /dev/sdb Disk /dev/sdb: 438.4 GB, 438489317376 bytes 255 heads, 63 sectors/track, 53309 cylinders

i would like to use the module puppet-lvm and would like to pass values to it. I have it setup properly as a module but I can''t for the lfe of me get it to take any values that I put in my baseconfig.pp in my home folder. like shouldn''t something like this work?? puppet-lvm {''setvolume'': vg => ''myvg'', pv =>

Dear CentOS-Community, we have a server with four hard drives that are configured as raid10 (/dev/sda). Now, /home and /root are almost full. Therefore, we decided to buy four additional hard drives that should configured also as raid 10 (/dev/sdb). I want to use LVM to extend disk space for root and home. My (successful) test procedure in a virtual environment looks like this: 1. devide

When doing the 5.2 installation the ONLY drive option provided is mapper/nvidia_cbjcdhfe (250G) My system has 2 SATA - 250G drives and I want to use them in a RAID/LVM configuration. My question: How do I get the installer to let me use DiskDruid to create RAID1 arrays and then use LVM for the mount points? What I've done so far: I've verified that both drives are recognized by

I am mirroring two drives during install, what's the best practice here for the swap partition? Maybe two separate lv's from independent vg's *not* mirrored for swap and the let the OS manage it? Boot and the / vg will be mirrored. Thanks! jlc

Hi All. I have a dell system with a H700 raid. Within the hardware RAID config I've created a "virtual disk" which I have assigned to one of my guests. On the host the device is "/dev/sdb", on the guest it's "/dev/vdb". This works fine. Within the guest, we have created lvm PV on /dev/vdb (using the whole disk - no partitions) and created a volume

Does anybody here have any idea how to make an exact copy of a drive that has LVM partitions? I'm having trouble using dd to do this for an EL5 server. We're trying to diagnose a software problem of some kind and would like an exact, perfect copy of the software running so that we can see exactly what the problem is without disturbing our production copy. It's been admin practice

Hi Rich, On Wed, Jun 04, 2014 at 10:02:55AM +0100, Richard W.M. Jones wrote: > > On Wed, Jun 04, 2014 at 10:21:41AM +0800, Hu Tao wrote: > > Hi, > > > > I'm adding support to resizing logical partitions(patch is in progess). > > But encounter an error when adding a logical partition in dest image: > > > > virt-resize: libguestfs error: part_add: