similar to: mdadm syntax

I have been trying to delete an md. I have recently updated to version 1.12 of mdadm. I used to be able to do mdadm ,dev. --stop. It does not seem to be stopping, but I do not get any error and the $?/return code is 0. The --verbose option for mdadm does nothing for --stop. How do I determine why this is not successful? Thanks...Art

Hello all, I'm trying to install CentOS 6.3 to an mdadm partitionable array and not having any luck. The installer only allows me to create one file system per md device, or specify the md device as a LVM physical volume. I don't want to do either, I want to create one md device and create multiple partitions on top of the md device. I thought that perhaps the installer was preventing

Hello Since linux 2.6, the md layer has a feature called partitionable arrays. So instead of having two disks, creating an identical partition table on both and then putting those partitions in RAID 1, you take those two disks and put them in one partitionable RAID 1 array (in mdadm terms, "mdp") and create a partition table on the new RAID device. The advantages are quite clear

Hi, I've written two small howtos, and would like to contribute them to the CentOS Wiki. The first one is "How to install CentOS 5 on software partitionable mdadm RAID1", and the second one "How to repair a software mdadm RAID5 with two or more failed disks (if you know that information is still on the disks and readable)". I think that the first one should be somewhere

Hello all, I'm having quite an interesting time getting up to speed with KVM/QEMU and the various ways of creating virtual Guest VMs. But disk I/O performance remains a bit of a question mark for me. I'm looking for suggestions and opinions .... This new machine has tons of disk space, lots of CPU cores and loads of RAM, so those are not issues. I currently have several software

Hello folks, I am experiencing a weird problem at bootup with large RAID-6 arrays. After Googling around (a lot) I find that others are having the same issues with CentOS/RHEL/Ubuntu/whatever. In my case it's Scientific Linux-6 which should behave the same way as CentOS-6. I had the same problem with the RHEL-6 evaluation version. I'm posting this question to the SL mailing list

Hi, I'm having a problem with ext3 on my system. I'm running 2.4.13 with the appropiate ext3 patch and a software raid array with paritiions as shown below: Filesystem Size Used Avail Use% Mounted on /dev/md5 939M 237M 654M 27% / /dev/md0 91M 22M 65M 25% /boot /dev/md6 277M 8.1M 254M 4% /tmp /dev/md7 1.8G 1.3G

Environment: CentOS 6.2 amd64 (min. server install) 2 virtual hard disks of 10GB each Linux KVM Following the instructions on CentOS Wiki <http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1> I installed a min. server in Linux KVM setup (script shown below) <script> #!/bin/bash nic_mac_addr0=00:07:43:53:2b:bb kvm \ -vga std \ -m 1024 \ -cpu core2duo \ -smp 2,cores=2 \

Trying to install Centos6 on my system (it's been running C5 for years). I've got a pair of drives, so I'm trying to use RAID-1. Previously I used a procedure where each partition was part of a separate RAID device, but this time I'm trying the HOWTO from the Centos WIKI on making a partitionable RAID pair. I've been having a lot of problems, but have also been working thru

Hi all! I'm building up a new box and plan to use Centos 5 on it. i've got a pair of SATA 320 GB drives to make a RAID1. I'm trying to follow the "howto" on the centos wiki for making a "partitionable RAID" installation. Given that my partition scheme has a separate /boot partition, while the one in the HOWTO apparently does not, I've had to tweak the steps

Hello. I just tried (as my first attempt in xenning) to set up a lenny amd64 domU on a partitionable Mirror RAID (/dev/md_d0p1 - /dev/md_d0p4), using the Debian installer from "people.debian.org/~joeyh/d-i/images/daily/". The partitions of the md will be represented inside the domU as /dev/xvda1-4 accordingly. The dom0 seems to run fine, it''s Xen 3.2.1 on amd64 lenny. The

I have some suggested tweaks and changes to http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1 1. The user should be instructed to start rescue mode with networking in order to be able to retrieve the patch for mkinitrd. 2. The command to create /etc/mdadm.conf will result in an extra line "spares=1" while the array is still syncing. Adding " | head -1 " to the

Hi messmer, seems that anaconda supports partitioned RAID devices. Disk selection see one mdraid device and permits to create partition on it. Il 13/03/2016 01:04, Gordon Messmer ha scritto: > On 03/12/2016 08:22 AM, Alessandro Baggi wrote: >> From several how-to concerning raid1 installation, I must put each >> partition on a different md devices. > > Not necessarily. You

Hi, Apologies, this is going to be quite long - I'm going to provide as much info as possible. I'm running a system with ext3 fs on software RAID. The RAID set-up is as shown below: jlm@nijinsky:~$ cat /proc/mdstat Personalities : [linear] [raid0] [raid1] [raid5] read_ahead 1024 sectors md0 : active raid1 hdc1[1] hda1[0] 96256 blocks [2/2] [UU] md5 : active raid1 hdk1[1] hde1[0]

Hi again! I would like to add an ext3 partition (eg. /dev/md11) with its external journal (on /dev/md21) to /etc/fstab in order to have it mounted while system-startup. Do I have to specify the external journal device in fstab or does the partition find its journal device by itself? If the first, ho should I specify it? I created the journal with mke2fs /dev/md22 -O journal_dev and the ext3

Hi, I'm having a problem with ext3 on my system. I'm running 2.4.13 with the appropiate ext3 patch and a software raid array with paritiions as shown below: Filesystem Size Used Avail Use% Mounted on /dev/md5 939M 237M 654M 27% / /dev/md0 91M 22M 65M 25% /boot /dev/md6 277M 8.1M 254M 4% /tmp /dev/md7 1.8G 1.3G

So, it installed happily. Then wouldn't boot. No problem, I'll bring it up with pxe, then chroot and grub2-install. Um, nope. I edited the device map from hd0 and hd1 being the RAID to /dev/sda and /dev/sdb, then ran grup2-install. It now tells me can't identify the filesystem on hd0, and can't perform a safety check, and gives up. What am I missing? Google is not giving me any

Hi list, I'm new with UEFI and GPT. For several years I've used MBR partition table. I've installed my system on software raid1 (mdadm) using md0(sda1,sdb1) for swap, md1(sda2, sdb2) for /, md2 (sda3,sdb3) for /home. From several how-to concerning raid1 installation, I must put each partition on a different md devices. I've asked times ago if it's more correct create the

On the wiki page for creating a mirrored root drive, at <https://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1>, it first tells you, in the install, to chose manual partitioning, and to leave at least 1M at the end of the drive.... and then it tells you to create the RAID 1 using /dev/sda and /dev/sdb - the *whole* raw drives. mark, currently creating a RAID 1 using just

Hi. The following HowTo on the CentOS Wiki: http://wiki.centos.org/HowTos/Install_On_Partitionable_RAID1 valid for CentOS 5, has not been updated to CentOS 6, yet. I found it very useful during the glorious CentOS 5 days and now that I've successfully ported my RAID1 experience to CentOS 6, I'd like to share it with the Community. The title of the HowTo is currently: "How to