similar to: Slightly OT: First Time KVM and LVM on Centos

----- Original Message ----- From: "Mark Milhollan" <mlm at pixelgate.net> To: "Jeff Boyce" <jboyce at meridianenv.com> Sent: Thursday, December 04, 2014 7:18 AM Subject: Re: [CentOS] CentOS 7 install software Raid on large drives error > On Wed, 3 Dec 2014, Jeff Boyce wrote: > >>I am trying to install CentOS 7 into a new Dell Precision 3610. I have

Greetings - I am preparing to order a new desktop system for work. In general the new system will be a Dell Precision T3610 with two 3 TB drives. I plan on installing CentOS 7 as a KVM host, with virtual machines for Win 7 Pro and Linux Mint. I am looking for some advice or a good how-to on configuring software raid on the two drives, then using LVM for the host and virtual machines. I

Greetings - The short story is that got my new install completed with the partitioning I wanted and using software raid, but after a reboot I ended up with a grub prompt, and do not appear to have a grub.cfg file. So here is a little history of how I got here, because I know in order for anyone to help me they would subsequently ask for this information. So this post is a little long, but

Greetings - I am trying to install CentOS 7 into a new Dell Precision 3610. I have two 3 TB drives that I want to setup in software RAID1. I followed the guide here for my install as it looked fairly detailed and complete (http://www.ictdude.com/howto/install-centos-7-software-raid-lvm/). I only changed the size of the partitions from what is described, but ended up with the disk

Greetings - I will be getting a new server for my company in the next few months and am trying to get a better understanding of some of the basic theoretical approaches to using Centos KVM on a server. I have found plenty of things to read that discuss how to install KVM on the host and how to install a guest and setup the network bridge, and all the other rudimentary tasks. But all of

Sorry for breaking the threading, as I only get the daily digest. My comments (interspersed) begin with the **. Message: 41 Date: Tue, 16 Sep 2014 18:38:02 -0400 From: SilverTip257 <silvertip257 at gmail.com> To: CentOS mailing list <centos at centos.org> Subject: Re: [CentOS] Advice on CentOS 7, software raid 1, lvm, 3 TB disks Message-ID:

Hi all! I'm still on C6. I'm using a RAID1 configuration (Linux software RAID) and I'd like to either use the same one, or possibly configure it on new drives (larger) when I upgrade to C7. (I'm really feeling the need to move off C6.) But it isn't at all obvious how one would do a new RAID1 setup in Anaconda, and I don't find any user reports or other info on this in the

On 11/13/2015 01:46 AM, J Martin Rushton wrote: > If you really_need_ the guarantee of a snapshot, consider either LVM > or RAID1. Break out a volume from the RAID set, back it up, then > rebuild. FFS, don't do the latter. LVM is the standard filesystem backing for Red Hat and CentOS systems, and fully supports consistent snapshots without doing half-ass shit like breaking a RAID

On Wed, Sep 17, 2014 at 1:26 PM, Jeff Boyce <jboyce at meridianenv.com> wrote: > Sorry for breaking the threading, as I only get the daily digest. My > comments (interspersed) begin with the **. > > <...snipped...> > > > Arch Linux create soft-raid - > https://wiki.archlinux.org/index.php/Software_RAID_and_LVM > > ** I had not found this one. My first

On 12/05/2014 01:50 PM, Jeff Boyce wrote: > > ----- Original Message ----- From: "Mark Milhollan" <mlm at pixelgate.net> > To: "Jeff Boyce" <jboyce at meridianenv.com> > Sent: Thursday, December 04, 2014 7:18 AM > Subject: Re: [CentOS] CentOS 7 install software Raid on large drives error > > >> On Wed, 3 Dec 2014, Jeff Boyce wrote:

Il 17/09/2018 22:12, Gordon Messmer ha scritto: > On 9/17/18 7:50 AM, Alessandro Baggi wrote: >> Running a backup I follow this steps: >> >> 1) Stop httpd >> 2) Create lvm snapshot on the dataset >> 3) Backup database >> 4) restart httpd (to avoid more downtime) >> 5) mount the snapshot and execute backup >> 6) umount and remove the snapshot

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

Il 18/09/2018 17:14, Gordon Messmer ha scritto: > On 9/17/18 11:38 PM, Alessandro Baggi wrote: >> Il 17/09/2018 22:12, Gordon Messmer ha scritto: >>> That doesn't look right.? It should look more like 1) stop or freeze >>> all of the services (httpd and database), 2) make the snapshot, 3) >>> start or thaw all of the services, 4) mount the snapshot, 5)

CentOS Community, I have a dedicated server with 4 hard drives in a RAID 10 software configuration running LVM. My OS is CentOS 6.2. Earlier today, I rebooted my system and my system did not come back online. I opened a ticket with my datacenter who informed me that one of my hard drives is no longer recognized by the bios and has failed. I was told that an OS reinstall was needed. I

Once upon a time, m.roth at 5-cent.us <m.roth at 5-cent.us> said: > Here's a question: all of the arguments you're giving have to do with VMs. > Do you have some for straight-on-the-server, non-VM cases? I've used LVM on servers with hot-swap drives to migrate to new storage without downtime a number of times. Add new drives to the system, configure RAID (software or

Greetings - I have stepped through the first guest OS installation (a testing VM) on my new server and have a technical question that I hope someone might be able to help me with. I have exhausted my google search ability and have not been able to find the details I am looking for. In general the question I am trying to answer is how to select and use multiple raw logical volumes when

Greetings - I am going through some testing steps to expand a logical volume and the corresponding filesystem on a KVM guest and have run across a deficiency in my knowledge. I spent the afternoon yesterday googling for answers, but had have come up blank still. What I am trying to do is resize the file system to use the additional disk space that I added to the logical volume that the

Hi, I'm trying to set up a redundant DRBD system but I'm running into trouble when I try to define a volume group. The physical backing device for the drbd resource /dev/drbd0 is /dev/vdb1. The problem is that when I do a "pvs" on the command line the physical volume is shown as /dev/vdb1. So I tried the following filter in /etc/lvm/lvm.conf: filter = [

I am planning to increase the disk space on my desktop system. It is running CentOS 5.9 w/XEN. I have two 160Gig 2.5" laptop (2.5") SATA drives in two slots of a 4-slot hot swap bay configured like this: Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End

I've started updating systems to CentOS 7.6, and so far I have one failure. This system has two peculiarities which might have triggered the problem. The first is that one of the software RAID arrays on this system is degraded. While troubleshooting the problem, I saw similar error messages mentioned in bug reports indicating that sGNU/Linux ystems would not boot with degraded software