I kept my movies on a 2 drive software raid1 mirror, but now I changed my mind about needing a raid and pulled one of the drives for another use. Can I convert the remaining raid drive back to a regular single drive and keep the data in place? Can I change the raid partition back to regular partition and be able to mount it?
View 6 RepliesI am running single drive Ubuntu server 9.10 with a lot of software. Now I want to add one more disk (same size and type) and to convert this to RAID 0 without need of reinsallation. Is it possible and if yes how? I didn't find nothing for RAID 0. It sounds simple, but probably is not.
View 4 Replies View RelatedI have the H8dmu Supermicro mother board with the MCP55 RAID. CentOS 5 is detecting the four hard drives separately. The operating system resides on a hard drive not defined as a part of the RAID. The RAID was setup as striped.The sata_nv driver is loaded.why the OS would not be seeing the raid as a single drive?
View 2 Replies View RelatedI am looking to convert a raid 1 server I have to raid 10. It is using software raid, currently I have 3 drives in raid 1. Is it possible to boot into centos rescue, stop the raid 1 array. Then create the raid 10 with 4 drives, 3 of which still has the raid 1 metadata, will mdadm be able to figure it out and resync properly keeping my data? or is there a better way to do it?
View 2 Replies View Relatedi downloaded the centos 5.5 cds in cd version. it has 7 cds. Now i feel, its better if its a single dvd, to install , to update the packages n all.so is it possible to convert the seven cds to one single dvd. i tried unraring the seven cds , combined them and burnt as a DVD, but in vain.so is it possible to do ? any other ways ?? help plz!
View 1 Replies View RelatedWas wondering if it's possible to set up a single disk with btrfs and then later on convert it to a 'mirrored' array?
View 1 Replies View RelatedI want to convert double quote to single quote in a text file. I tried escape characters however no success. Please find details as follows:
-sh-3.00$ sed 's/"/'/g test.txt
sed: -e expression #1, char 7: unterminated `s' command
-sh-3.00$ cat test.txt
"unix"
I want "unix" to be converted to 'unix'
Here is my system: I have dell poweredge 1950 PERC 6 with 300 GB raid system. It has two disks of each 300GB RAID mirrored system. I have few applications and data that reached around 280GB. As you know, poweredge 1950 we can have only two disk.
They are not mission critical. Hence, I wanted to remove the raid system and use as a non-raid system. By doing it, The applications and data can grow upto 600GB. I do not want to loose the data and setup. I am not so clear about RAID system and its conversion.
How long does hardware Raid card (raid 1, 2 drives)take to mirror a 1 TB drive (500gb used)?Is there a general rule of thumb for this?4 hours? 12 hours? 24 hours?
View 1 Replies View RelatedI know Ghostscript can convert PDFs to JPGs, and in the case of a multi-page PDF, can rip each page to an individual JPG. But is it possible to have it rip them to one JPG, so that the pages are pasted below each other, e.g. the top half of the JPG is page 1, the bottom half is page 2? Or do I have to use another program (and can ImageMagick do this?) to combine the JPG pages into one image?
View 2 Replies View RelatedI have a large number of scanned JPG images that I would like to convert into a single PDF file -- each image will be on its own page, and I want the pages to be in a certain order.What is the command for ImageMagick to take a batch of JPGs and convert them to PDF, and order the pages in a certain way.
(by the way: I am working on writing a Gentoo ebuild for convert2pdf at the moment, but until I get that worked out, I'd like to figure out how to do this using Imagemagick, which is already in the portage tree, and already installed)
Recently, one the SMART utility said that one of the drives had failed and another drive was about to fail. I downed the box and hooked them up to my windows machine to run sea tools on them (They are all seagate drives). Sea Tools said that the drives were fine, while ubuntu said they were failing/dead. Yesterday I decided to try to fix one of the drives in the raid. I turned the server off, took the failed drive out, and restarted. Of course the raid didn't work because only 2 of the 3 drives were there, however it had been working w/ only 2 of the 3 drives for a couple months now (I'm a lazy college student). I turned it back off and back on with the drive there just to see if I could get the raid up again, but I havn't been able to get it to go. So far I've tried:
Code:
mdadm --assemble /dev/md0 /dev/sd[b,c,d]
mdadm: no recogniseable superblock on /dev/sdb
mdadm: /dev/sdb has no superblock - assembly aborted
[code]....
I'm looking for a way to trick the raid into working with just 2 drives until I can warranty the seagate and buy an external 1.5 TB drive to use as another backup. how to remove the bad drive from the array and replace it with a fresh drive, without data loss.
Can RAID be implemented on a single hard disk ? If yes, plz give a link for it.
View 2 Replies View RelatedIf you want a full run down as to WHY I want to do this, read here: webhostingtalk.com/showthread.php?t=899909Basically, my ISP could not get my server running stable on a simple raid 1 (or raid 5) so what it came down to was having them install my system on a single disk. I don't exactly like this, main reason being, if the system (or HDD) crashes, I'll end up with another several hours of down time..
View 1 Replies View RelatedI've got a couple of boxes (one linux and one Win Vista) that I want to enable the hardware RAID 1 (mirrored drives). I've not worked with RAID before. I don't really know much about RAID, but from what I've gathered from google, it seems like I may have to enable the RAID first in the BIOS and then reinstall. Is that correct or is there a way to enable the onboard RAID without reinstalling? I was hoping to clone the drive with dd and then enable RAID 1 in the bios and viola! Since one of the machines is my parents' (the Vista box), I'd prefer to do something non-destructive. I may just setup a backup mechanism for them where at least they have the data files backed up to the other drive. If I have to reinstall mine (Debian Lenny), I may bite the bullet and do the reinstall.
View 5 Replies View RelatedI need to copy data from a single HD, which used to be part of a Linux RAID 1. I've googled around, but can't find any clue how to mount partitions from this single HD.
Background: The HD comes from a linux based NAS box Synology DS207+. The NAS uses ext3 as filesystem. Both NAS disks are fine, but the other NAS hardware is dead and not worth repairing or replacing.
I can't seem to get past step 6 of he installation of Ubuntu 10.04. I get the error: The ext4 file system creation failed... on single partition (no raid). I chose ' / ' as the mount point, and have tried with and without a swap drive. I'm installing on a Sony VAIO VGN-NS160D, and the HDD was previously formatted to NTFS. There's no other OS so I don't see any way of getting a command line to try a sudo fdisk..
View 1 Replies View RelatedI was recently requested to try and convert a running system to RAID level 1. I did not succeed in this task. However, I am still interested in accomplishing this task in a test environment.What I did was create a RAID device with a device missing e.g.
mdadm --create /dev/md0 --level=1 --raid-devices=2 missing /dev/sdb2
Once the RAID was up and running I created the /etc/mdadm.conf file so that it would activate the RAID device on boot. Once the device was created I copied all the data from the running root filesystem to the /dev/md0 device. The only directory that I didn't copy was the /proc directory. When I rebooted the machine I had a kernel panic and the system couldn't find /dev/root. I would greatly appreciate it if someone could provide some information/tips regarding the problem.
my linux server is running with an old IDE hard drive getting these hdparm results:
[code]...
i have a WD Raptor drive i'm going to install and put a fresh install of linux on it. i'm just curious, will using a much faster HD as my main drive increase the speeds of my network transfers from the raid drive? do transfers only go as fast as the system drive?
This is a strange problem. I have Ubuntu server installed on a proper server hardware. My RAID card reports all four HDDs to ubuntu as single drives, which is how i set it up because Ubuntu does not recognize the raid card on the server. Now you might say if thats the case, why dont i remove the raid card and have the BIOS report to ubuntu as four single drives then i can perhaps setup software raid. Well my board has only one sata port.Ubuntu is all setup. on the first drive and i have set the other three up using software RAID.
System works great only problem is it freezes sometimes. Not everytime, just on the odd occassion I use the same Hardware without the raid card and of course just one HDD and it great. No freezes.That leads me to believe its the RAID card.My question is why will it run great for days and sometimes just freeze on me? Probably silly but if theres an issue with the RAID card, it should not work at all, should it?
Does anyone know of any software that will convert a few csv's into a single xml?I have a windows program that has been doing it up until now but the info is pulled from one of my linux servers and then sent back to it afterwards, im looking to script it all rather and keep everything on the linux box.
View 6 Replies View RelatedI had done a new lucid install to a 1 TB RAID 1 array using the alternate CD a few weeks back. I messed up that system trying to some hardware working that lucid doesn't have drivers for yet, so I gave up on it and reinstalled to a single 80 GB disk that I now want to move over to the RAID array.
I moved all of the existing files on the array to a single folder, then copied all of the folders from the 80 GB disk over to the array with permissions and symlinks (minus the contents of /proc and /sys, which I created empty).
These are the commands I used:
Quote:
p -a -d -R -v -t /media/raid_array /b*
cp -a -d -R -v -t /media/raid_array /d*
cp -a -d -R -v -t /media/raid_array /e*
cp -a -d -R -v -t /media/raid_array /h*
[Code]....
I tried to change fstab to use the 689a... for root, but when I try to boot, it's still trying to open /dev/disk/by-uuid/412d...
So then I booted from the single disk again and chrooted into the array, then ran update-initramfs -u. I got 3 "grep: /proc/modules: No such file or directory" errors, and "cat: /proc/cmdline: No such file or directory"- so I created directory /proc/modules, created an empty file /proc/cmdline, and ran the initramfs update again. Then I tried to shut down, which hung (probably because I was doing all of this from a terminal window in Gnome), so I killed the power after a couple of minutes.
It's still trying to use /dev/disk/by-uuid/412d... to boot.
What am I missing? I assume I just have to change the UUID to mount as root, but I don't know how.
my Fedora 11 system is not starting anylonger. It stops with the message:
Code:
VFS: Can't find ext4 filesystem on dev dm-0
The system told me since a while, that a lot of the sectors of one disk of the (software) RAID compound are failed already. So tried to disconnect each of the disks and start them separately. Unfortunaltly this is not working (for one its is not working at all, the other wents the same far as with both), when I tried to recover the system with the Fedora DVD, it said no distribution found. I am quite new and do not know so much about linux system, so i do not know what further information you could need. Maybe it can be important, that both disks are encryped (the system wents so far, that I can type in the password).
I'm running Ubuntu 11.04 and would like to know how to backup a whole flash drive to a single image.
View 9 Replies View RelatedI've recently bought the "new" Macbook from Apple. It obviously came with OSX preinstalled. And I'm obviously not satisfied with the way it works, I also need a FAT32 partition so I can share my files between all three OS's. Tricky business. And I thought later on I might try and create me a nice LFS system to learn about Linux and show of to my mates. But doesn't a single hard drive only support up to 4 partitions? So off I went and got Ubuntu running besides Mac. It wasnt recognized by neither the default boot-loader nor rEFIt straight away. I had to hold alt to come up with the special BIOS or something every time I needed to use Ubuntu (always).
I got up to a point where I could run Ubuntu with wireless, sound and pretty much everything working. Until the kernel updates were installed. Somehow I (or maybe it) managed to screw up and booting had become impossible, for it would crash halfway through with kernel errors and other undefined weirdnesses. Meanwhile I had tried installing Windows 7 on a different partition. Which I found to be catastrophic also. I was forced to put up with OSX, which in my opinion is fine at what it does but it doesn't do very much for me. After a couple of tries I had to give up on fiddling with Ubuntu for I needed Windows 7 to run software for school. So my current partition layout looks like this......
I'm installing Ubuntu to be used as an NFS storage server for my VMWare ESX servers. I've got a server that has two 2TB drives in it. The hardware raid controller isn't an option because it only sees up to 1TB of each drive. So, I'm trying to figure out to do this using either LVM or Parted. I don't know much about doing this, and LVM was the first thing I tried but it didn't seem to do much. It looks like it just created a smaller partition to install Ubuntu on. It didn't ask me what I wanted to do with the rest of the drive space. I've messed around with Parted and am not sure what to do, to be honest. I found a few blog posts but most started off assuming that I knew how to get to where they were starting from.
It's just two drives, /dev/sda /dev/sdb
I am installing Debian on my netbook. I need to make a single fat32 partition on my usb flash drive. I really love linux and want it on my netbook.
View 4 Replies View Relatedhow to format a single Ubuntu hard drive - no partinioning at the moment.
View 4 Replies View RelatedCould any RAID gurus kindly assist me on the following RAID-5 issue?I have an mdadm-created RAID5 array consisting of 4 discs. One of the discs was dropping out, so I decided to replace it. Somehow, this went terribly wrong and I succeeded in marking two of the drives as faulty, and the re-adding them as spare.
Now the array is (logically) no longer able to start:
mdadm: Not enough devices to start the array.Degraded and can't create RAID ,auto stop RAID [md1]
I was able to examine the disks though:
Code:
root@127.0.0.1:/etc# mdadm --examine /dev/sdb2
/dev/sdb2:
Magic : a92b4efc
Version : 00.90.00
code....
Code:
mdadm --create --assume-clean --level=5 --raid-devices=4 /dev/sda2 /dev/sdb2 /dev/sdc2 /dev/sdd2
As I don't want to ruin the maybe small chance I have left to rescue my data, I would like to hear the input of this wise community.
So I didn't notice when I setup my CentOS 5.5 server that I left / as RAID 0 on md1. All the rest are RAID 1. Is there a way I can modify the array to RAID 1 without a risk of data loss? I'm glad I caught this before I setup any other services. I've only setup smb so far...
[root@ftpserver ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/md1 16G 3.0G 13G 20% /
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