similar to: C7 + UEFI + GPT + RAID1

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

> On Mon, Feb 25, 2019 at 11:54 PM Simon Matter via CentOS > <centos at centos.org> > wrote: > >> > >> > What makes you think this has *anything* to do with systemd? Bitching >> > about systemd every time you hit a problem isn't helpful. Don't. >> >> If it's not systemd, who else does it? Can you elaborate, please? >> >

Hi, I encounter a problem with Syslinux 5.00 I cannot really describe. So I created two small videos: Booting with Syslinux 5.00 (1.3 MB): <https://www.dropbox.com/s/b6g8cdf2t9v48c6/boot-syslinux5-fail.mp4> How I fixed the problem by downgrading to Syslinux 4.06 and how booting should look like (6.5 MB): <https://www.dropbox.com/s/lt7cpgfm0qvqtba/boot-syslinux5-how-i-fixed-it.mp4>

System is CentOS 6 all up to date, previously had two drives in MD RAID configuration. md0: sda1/sdb1, 20 GB, OS / Partition md1: sda2/sdb2, 1 TB, data mounted as /home Installed kmod ZFS via yum, reboot, zpool works fine. Backed up the /home data 2x, then stopped the sd[ab]2 partition with: mdadm --stop /dev/md1; mdadm --zero-superblock /dev/sd[ab]1; Removed /home in /etc/fstab. Used

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

Something seems to be wrong with my file systems, and I want to fsck everything. But I cannot. The setup consists of 2 hds, carrying 3 raid1 (ext3) file systems (boot, /, swap). OS is up-to-date CentOS 5. So I boot from CentOS 5.3 dvd in rescue mode, do not mount the file systems, and try to run fsck -y /dev/md0 fsck -y /dev/md1 fsck -y /dev/md2 For each try I get an error message:

Is it possible or will there be any problems with using mdraid on top of mdraid? specifically say mdraid 1/5 on top of mdraid multipath. e.g. 4 storage machines exporting iSCSI targets via two different physical network switches then use multipath to create md block devices then use mdraid on these md block devices The purpose being the storage array surviving a physical network switch

Hello everyone. I'm trying to install CentOS 8 with root and swap partitions on software raid. The plan is: - create md0 raid level 1 with 2 hard drives: /dev/sda and /dev/sdb, using Linux Rscue CD, - install CentOS 8 with Virtual Box on my laptop, - rsync CentOS 8 root partition on /dev/md0p1, - chroot in CentOS 8 root partition, - configure /etc/mdadm.conf, grub.cfg, initramfs, install

Hi. CENTOS 7.6.1810, fresh install - use this as a base to create/upgrade new/old machines. I was trying to setup two disks as a RAID1 array, using these lines mdadm --create --verbose /dev/md0 --level=0 --raid-devices=2 /dev/sdb1 /dev/sdc1 mdadm --create --verbose /dev/md1 --level=0 --raid-devices=2 /dev/sdb2 /dev/sdc2 mdadm --create --verbose /dev/md2 --level=0 --raid-devices=2

I have a machine on CentOS 5 with two disks in RAID1 using Linux software RAID. /dev/md0 is a small boot partition, /dev/md1 spans the rest of the disk(s). /dev/md1 is managed by LVM and holds the system partition and several other partitions. I had to take out disk sda from the RAID and low level format it with the tool provided by Samsung. Now I put it back and want to reassemble the array.

Hi all. I have a Dell SC440 running Centos 4.4. It has two 500GB disks in a RAID1 array using linux software raid (md1 is / and md0 is /boot). Recently the root file system was remounted read-only for some reason. The logs don't show anything unusual, presumably the file system was read-only before anythng was logged. Running dmesg showed this error repeated many times: EXT3-fs error (device

In article <1485342377.3072.6.camel at biggs.org.uk>, Pete Biggs <pete at biggs.org.uk> wrote: > On Tue, 2017-01-24 at 17:14 -0500, m.roth at 5-cent.us wrote: > > 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

Guys, The other day while working on my old workstation it get frozen and after reboot I lost almost all data unexpectedly. I have a RAID1 configuration with LVM. 2 IDE HDDs. md0 .. store /boot (100MB) -------------------------- /dev/hda2 /dev/hdd1 md1 .. store / (26GB) /dev/hda3 /dev/hdd2 The only info that still rest in was that, that I restore after the fresh install. It seems that the

Hi, I'm currently experimenting with software RAID1 on a spare PC with two 40 GB hard disks. Normally, on a desktop PC with only one hard disk, I have a very simple partitioning scheme like this : /dev/hda1 80 MB /boot ext2 /dev/hda2 1 GB swap /dev/hda3 39 GB / ext3 Here's what I'd like to do. Partition a second hard disk (say, /dev/hdb) with three

Guys, The other day while working on my old workstation it got frozen and after reboot I lost almost all data unexpectedly. I have a RAID1 configuration with LVM. 2 IDE HDDs. md0 .. store /boot (100MB) -------------------------- /dev/hda2 /dev/hdd1 md1 .. store / (26GB) -------------------------- /dev/hda3 /dev/hdd2 The only info that still rest in was that, that I restore after the fresh

I am trying to convert an existing IDE one-disk system to RAID1 using the general strategy found here: http://lists.centos.org/pipermail/centos/2005-March/003813.html But I am stuck on one thing - when I went to create the second md device with mdadm, # mdadm --create /dev/md1 --level=1 --raid-devices=2 /dev/hdb2 missing mdadm: error opening /dev/md1: No such file or directory And indeed,

I am running software RAID1 on a somewhat critical server. Today I noticed one drive is giving errors. Good thing I had RAID. I planned on upgrading this server in next month or so. Just wandering if there was an easy way to fix this to avoid rushing the upgrade? Having a single drive is slowing down reads as well, I think. Thanks. Feb 7 15:28:28 server smartd[2980]: Device: /dev/sdb

Thanks for all the responses. A little more digging revealed: md0 is made up of two 250G disks on which the OS and a very large /var partions resides for a number of virtual machines. md1 is made up of two 2T disks on which /home resides. Challenge is that disk 0 of md0 is the problem and it has a 524M /boot partition outside of the raid partition. My plan is to back up /home (md1) and at a

Once upon a time, Simon Matter <simon.matter at invoca.ch> said: > Are you sure that's still true? I've done it that way in the past but it > seems at least with EL8 you can put /boot/efi on md raid1 with metadata > format 1.0. That way the EFI firmware will see it as two independent FAT > filesystems. Only thing you have to be sure is that nothing ever writes to >

I have followed the procedure on the Centos page: http://wiki.centos.org/HowTos/CentOS5ConvertToRAID My setup is slightly different. I am using two partitions, / and /home. I have setup swap as a file, /home/swapfile. My hard drives are 500Gig sda and sdb. In modifying the instructions for initializing sdb I have: used /dev/md0 for / (sdb1) used /dev/md1 for /home (sdb2) In section 3.6 The