similar to: converting system to raid1

I am an experienced MS administrator of W2003 servers & Exchange systems. I have 5+ years UNIX mid-level experience but not in centOS. Grounded in SCO UNIX (the real SCO UNIX). We want to use CentOS on a recently grave yarded Dell poweredge 400SC server. This is a P4 3.0 Ghz, w/4GB memory, 2 SATA 250 GB disks. We want to use this server w/CentOS5, to provide file and print resources to 100

Hello, I'm trying to do a kickstart install of centos5. I'm pulling it off a network server and i'm getting an error, in the parsing of the file. It refers to line 31, i'm not going to show the complete file, but here is the indicated line: raid swap --fstype swap --level=RAID1 raid.4 raid.7 and the raid lines: part raid.7 --size=512 --ondisk=hdb part raid.4 --size=512

Hi, I did a command-line upgrade of a RHL73 server to Centos 5. It was a bit rocky road, but in the end it was successful. There's one thing that bugged me. I'm using software RAID1 consisting of /dev/hd{a,c}. No LVM or anything fancy, a number of /dev/mdX partitions, including the root (+/boot). I'd have preferred to continue using lilo as it works more easily with RAID1

Hello All, on a Centos5 system installed with software raid I'm getting: raid1: raid set md127 active with 2 out of 2 mirrors md:.... autorun DONE md: Autodetecting RAID arrays md: autorun..... md : autorun DONE trying to resume form /dev/md1 creating root device mounting root device mounting root filesystem ext3-fs : unable to read superblock mount :

Greetings - I am a novice system administrator and will soon be purchasing a new server to replacing an aging file server for my company. I am considering setting up the new server as a KVM host with two guests; one guest as the Samba file server and a second guest as a testing area. My old server was set up about 7 years ago and has a 5 disk raid 5 configuration without LVM. I understand

On earlier versions of Centos, I could boot the install CD in rescue mode, let it find and mount the installed system on the HD even when it was just one disk of RAID1 partitions (type=FD). When booting from the centos5 disk the attempt find the system gives a box that says 'You don't have any Linux partitions'. At the bottom of the screen there is something that says:

Are there any ways to improve/manage the speed of pvmove? Man doesn't show any documented switches for priority scheduling. Iostat shows the system way underutilized even though the lv whose pe's are being migrated is continuously being written (slowly) to. Thanks! jlc

Dear All, I plan to replace an error disk that is part of an LV. from LVM how-to it could be done with using pvmove to move all PE from old disk to new disk.But the howto also said that pvmove is slow. Anyone has experience using pvmove on 2TB disk? Is it possible to make all PE on the old disk empty so I don't have to do pvmove (assuming that I can make a free space >= 2TB). Thank you in

Does documentation exist describing how to convert a simple, single disk non-RAID CentOS 5 system to software RAID1 using the CentOS install CD/DVD as a rescue disk? (Assuming not) Is there a need for such? (Assuming need) I volunteer to produce it. -------------------- Ed Heron

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

Hi > Continuing this thread, and focusing on RAID1. > > I got an HPE Proliant gen10+ that has hardware RAID support.? (can turn > it off if I want). What exact model of RAID controller is this? If it's a S100i SR Gen10 then it's not hardware RAID at all. > > I am planning two groupings of RAID1 (it has 4 bays). > > There is also an internal USB boot port. >

Have a CentOS 4.x 32 bit server running on a single 500M SATA drive. What is easiest way to convert too RAID 1 on it? Anyone have a link? Would be open to hardware or software just do not want to reinstall the entire mess.

Hello, Can you check following entrys: Old: disk = [''phy:vm_volumes/root.dhcp1,sda1,w'', ''phy:vm_volumes/var.dhcp1,sda2,w'', ''phy:vm_volumes/swap.dhcp1,sda3,w''] New: disk = [''phy:/vm_volumes/root.dhcp1,sda1,w'', ''phy:/vm_volumes/var.dhcp1,sda2,w'',

Hi All. Looking for some guidance/experience with LVM and pvmove. I have a LUN/PV being presented from a iscsi SAN. The LUN/PV is presented to 5 servers as a shared VG they all have LV's they use for data, they are all connected via iSCSI. As the SAN I am using is being replaced I need to move onto a new unit. My migration strategy at this time is to 1. Present a new LUN from the new SAN

I want to replace an existing 32bit with a 64bit installation (Centos 5). There's an existing LVM with lots of partitions. Most are used for Xen guests. The system itself uses only one of them plus a separate /boot partition that is not on LVM. What's the best course of action here? Should I do the reinstall with kickstart or better manually and reuse the existing filesystem? As I

> On 01/11/2023 01:33 PM, H wrote: >> On 01/11/2023 02:09 AM, Simon Matter wrote: >>> What I usually do is this: "cut" the large disk into several pieces of >>> equal size and create individual RAID1 arrays. Then add them as LVM PVs >>> to >>> one large VG. The advantage is that with one error on one disk, you >>> wont >>>

Hi all, As part of my raid experience, I have yet to have to do this, but was wondering how you guys would attempt it. I have 3 drives in a raid 1, with one as a hot spare. They are 250gb with all space used by two raid devices, 1 with boot, the other with LVMs filling them up. Now, lets say down the road I want to put in 500gb drives and replace them....yikes. I was thinking of taking out the

On 01/11/2023 02:09 AM, Simon Matter wrote: > What I usually do is this: "cut" the large disk into several pieces of > equal size and create individual RAID1 arrays. Then add them as LVM PVs to > one large VG. The advantage is that with one error on one disk, you wont > lose redundancy on the whole RAID mirror but only on a partial segment. > You can even lose another

I plan to upgrade an existing C7 computer which currently has one 256 GB SSD to use mdadmin software RAID1 after adding two 4 TB M2. SSDs, the rest of the system remaining the same. The system also has one additional internal and one external harddisk but these should not be touched. The system will continue to run C7. If I remember correctly, the existing SSD does not use a M2. slot so they

Dear All, I am in desperate need for LVM data rescue for my server. I have an VG call vg_hosting consisting of 4 PVs each contained in a separate hard drive (/dev/sda1, /dev/sdb1, /dev/sdc1, and /dev/sdd1). And this LV: lv_home was created to use all the space of the 4 PVs. Right now, the third hard drive is damaged; and therefore the third PV (/dev/sdc1) cannot be accessed anymore. I would like