similar to: beta 5 software RAID install

Is there a reason why after a software raid install (from kickstart) that md1 is always unclean. md0 seems fine. boot screen says md1 is dirty and cat /proc/mdstat show md1 as being rebuilt. Any ideas? Jerry --------------- my kickstart -------------- echo "bootloader --location=mbr --driveorder=$HD1SHORT --append=\"rhgb quiet\" " >

Is there any performance lost in using a software raid array with only 1 disk? I was wanting to use the mdadm monitoring tools to monitor the machines single disk drive for failures and such. Is there any performance hit for such a setup? Some machines have RAID some machines dont (for me) and I was thinking about a common setup. Also then if I want in the future I can actually just add the

I have a system that is RAID -1 configured as /dev/md0 is /dev/hda1 /dev/hdb1 /dev/md1 is /dev/hdb3 /dev/hdb3 it seems as though /dev/hda has failed.... I have another disk (identical model) that I can replace hda with. I know about the commands fdisk to repartion and raidhotadd /dev/md0 /dev/hda1 and raidhotadd /dev/md1 /dev/hda3 (to be ran after the system boots). BUT... how do I now get

Sorry - I did not include that I am actually "updating" a system from C6 to C7 and it has an existing RAID /dev/md0 and /dev/md1. Hit send to quick. Jerry On Wed, Aug 29, 2018 at 3:52 PM Jerry Geis <jerry.geis at gmail.com> wrote: > I am using a kickstart file for CentOS 7 > > raid / --device=md0 --fstype="xfs" >

Hi all, I was wonder what experiences there are out there with using RAID-X for performance increases. I do use RAID-1 (2 disks) but am interested in attemtps to gain higher R/W performance. Do the RAID-5's etc give noticeable performace increases? A significant help for me was using ccache for compiling programs. That was a real performance increase. Thanks for any suggestions/opinions.

I am using a kickstart file for CentOS 7 raid / --device=md0 --fstype="xfs" --level=1 --useexisting raid /home --noformat --device=md1 --level=1 --useexisting It is erroring out on the --useexisting. The exact text is: RAID volume "0" specified with "--useexisting" does not exist. What did I do wrong? Jerry

When doing software RAID-1 installs on reboot (just after install) I ALWAYS get RAID device is not clear - preforming reconstruction. Why is this? If I just installed the array should be in sync shouldnt it? And clean? Not that this is a big deal - it just seems odd. It does reconstruction and life goes on. Is something special at install time that we are only installing on one disk of the

Hi All, I had a machine with software RAID-1 have a disk crash. I am attempting to get the data off the good disk. Using a USB to SATA device I plugged it into another machine. I tried many things to mount it, to mdadm add it but could not get it to cooperate. Another thought I had is can I use fdisk to change the "type" of the partition from "linux raid" to "linux"

dmesg is not reporting any issues. The /proc/mdstat looks fine. md0 : active raid1 sdb1[1] sda1[0] X blocks [2/2] [UU] however /var/log/messages says: smartd[3392] Device /dev/sda 20 offline uncorrectable sectors The machine is running fine.. raid array looks good - what is up with smartd? THanks, Jerry

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:

I have noticed that when I do software raid installed (RAID1) that I reboot and one of the first things it says is md1 is not in sync doing background reconstruction... md0 is my /root partition md1 is my /home partition why would md1 not be in sync after an install. Jerry

On 08/11/16 02:33, Nicolas Kovacs wrote: > Hi, > > When I perform a software RAID 1 or RAID 5 installation on a LAN server > with several hard disks, I wonder if GRUB already gets installed on each > individual MBR, or if I have to do that manually. On CentOS 5.x and 6.x, > this had to be done like this: > > # grub > grub> device (hd0) /dev/sda > grub> device

Dear All, I'm trying to install Centos 4.2 x86_64 on a new Opteron server, using a software raid 1 boot partition. Here is the appropriate section of my kickstart.cfg #System bootloader configuration bootloader --location=mbr #Clear the Master Boot Record zerombr yes #Partition clearing information clearpart --all --initlabel #Disk partitioning information part raid.01 --size 50000

I'm playing with software RAID and LVM in some virtual machines and I've run into an issue that I can't find a good answer to in the docs. I have the following RAID setup: md0: sda1 and sdb1, RAID 1. This is /boot md1: sda2 and sdb2, RAID 1. This is a PV for LVM. VolGroup00, this is the volume group and md1 is the only PV in it. LogVol00 is swap LogVol01 is / LogVol02 is /home

Hey I was wanting to play with xen on beta 5. I have the beta 5 installed in my turion laptop. Went smooth... (4.4 would not install) Anyway anyone know were a starting point with xen might be? Thanks, Jerry

When I came into work this morning the console had the following: bio_endio __end_that_request_first scsi_end_request scsi_io_completion scsi_finish_command scsi_softirq __do_softirq do_softirg do_irq command_interrupt default_idle cpu_idle start_kernel Panic I am running software RAID-1 on this machine. I had 2 IDE disks and the machine when down once in a while with similiar messages. I

Hi, When I perform a software RAID 1 or RAID 5 installation on a LAN server with several hard disks, I wonder if GRUB already gets installed on each individual MBR, or if I have to do that manually. On CentOS 5.x and 6.x, this had to be done like this: # grub grub> device (hd0) /dev/sda grub> device (hd1) /dev/sdb grub> root (hd0,0) grub> setup (hd0) grub> root (hd1,0) grub>

Hello. I am trying to boot CentOS 4 from a copy of an ext3 software RAID 1 filesystem (md) which has been copied to a normal ext3 filesystem (hd). I am almost getting there, exept that the system hangs after booting the kernel. I copied the datas from the /boot and / partitions to two similar partitions on the backuped disk with mirrordir (can also be done with cp or dd). I have setup the new

Greetings ... Been lurking on the list for some time, hoping that at some point, I might be able to add to the collective (Yes, way to much StarTrek in the background! ) ... I have learn quite a bit by just lurking, but now I think I might have something to add ... I'm not sure the exact protocol or procedure for this and it's late in the evening and would like get this out, before I

All, I have a new install. software RAID-1. everything installed normal (2 - 40 GIG IDE drives) After install, reboot and the box starts the graphic boot, then hangs on "setting hostname". After a few minutes it drops out of graphic install and the last thing on the screen is "Checking root filesystem". It then sets there FOREVER. Any ideas? I have already re-installed from