I accidentally rm -rf 'ed /etc directory from the main server. The server has raid1 soft-raid. Is there a way to recover the directory.
View 4 RepliesI am looking for a solution to mirror a directory on my companys computer that runs in windows to an external ubuntu server on the internet.
View 7 Replies View RelatedI have a raid1 setup on a machine. Recently it died and I thought one of the drives had failed as it was shooting errors. So I tried unplugging that drive get it to boot off the mirror but it seems the techs forgot to mirror the boot device so the 2nd drive can't boot on its own. After a while it was realized that the sata cable was in fact bad and replaced so now its working again.
However, this occurrence showed a flaw in the setup where the RAID1 isn't working as its supposed to. I would like to correct this. Can I somehow mirror the boot partition so the 2nd drive will boot independent? I'm not sure how I would go about this. This is a CentOS 5 installation.
I accidentally formatted my Win 7 partition. I there any possibility of recovery? Failing that, is there any way to salvage files etc?
View 2 Replies View RelatedI'm looking to recover a RAID1 array hopefully using mdadm. Ive not really used Linux much befor but I'm keen to learn to get my data back. Basically one of the disks in my Maxtor Shared Storage II (2x500GB sata) died and I could do with either rebuilding the array or getting the data off another way.
I have a spare machine I could use for recovery process. It has a spare drive but its only 120Gig, I also have a bigger 320gig disk but thats IDE not SATA. Do I need to purchase another 500GB sata drive or can I use either of my spares? If i do need to buy a new drive could I use a 1TB or 1.5TB or will it have to be 500? Next question is what is that best version of linux to use, I have knoppix 6.2 and Ubuntu (not sure on version) already. I noticed that mdadm isn't installed by default on Ubuntu.
I'm running Mac OS X 10.5.8. I was recently uninstalling mysql5 from /opt/local/bin.I typed:rm -rf /opt/local/bin mysql*instead ofrm -rf /opt/local/bin/mysql*This deleted my entire /opt/local/bin directory which puts me in a bit of a bind.Is there any way to recover those files? If not, I have a friend that is using a similar set of programs, would it be possible to use the contents of his folderIf I end up needing to reinstall everything in this folder, what is the best way to go about doing this?
View 2 Replies View RelatedI have accidentally removed my apache2 startup file /etc/init.d/apache2 using rm /etc/init.d/apache2 command.
How can I get that back?
I have a MSI Board that had this hard drive configuration.
200GB x Single EXT4 Ubuntu
320GB x Raid Mirror NTFS
320GB x Raid Mirror NTFS
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A friend accidentally did mkfs.vfat on my 1Tb ext. hard drive..It's now showing as 400 GB free where it was 10 GB previously and the remaining data is being shown as weird symbols and empty folders and yet it occupies more than 500GB..Any way to recover the data completely?
View 1 Replies View RelatedWhile doing some tidying up, in the process of moving some directories off my temporary mint kde desktop, I lost the contents of an important data directory on my data partition. Just to try to explain a bit of background, I have been using mint kde4 as a stopgap measure until I got squeeze working again ( i have been having graphics problems) and had a symlink on the desktop to a /data directory on my data partition. As I just got squeeze working again, I was moving stuff that had accumulated on the mint desktop to a directory named /2010 in the /data directory on the data partition, but accidently copied/pasted the /data symlink along with the 3 other directories I had highlighted. So effectively, I was accidentally copying the /data symlink to /data/2010. For reasons I don't understand, the whole of the contents of the /data directory disappeared, and it is now totally empty. I thought, that cannot happen can it? So I opened gparted and sure enough, that partition, which previously had about 70 gb of data in the /data directory was empty apart from /lost+found and an odd text file I had stored there. The /data directory is still there, but empty. I shut down Mint and booted into squeeze, thinking it must be a mistake, but gparted shows it has all gone. How on earth can this happen? I have some of the data backed up but a fair bit of the recent stuff isn't, so I need to recover it. I hoped the file system check that happened when I booted back into squeeze would maybe repair anything that got broke, but it showed as clean during boot.
View 5 Replies View RelatedI need to backup my home folder (and a few other folders) on an organizational Linux NFS system where my account will be expiring soon, onto a personal hard drive (which is not using a Linux filesystem). I access the account through SSH and SFTP. I want to backup all metadata for these files and directories and everything in them, including dates, owners, groups, UID/GID numbers, CHMOD permissions, etc. How can I go about doing this? Do I need to run the LS command recursively on the directory with certain settings of what information to display, and pipe the results to a file so that the information will be in a file regardless of which filesystem I move it to? Or is there a way to save all the metadata using something like TAR/GZ? If it's with TAR/GZ, then how do I view this metadata on other filesystems that I move the archive to, and will the users/groups stored remain intact as long as it's not extracted?
In addition, do you know how to do this for SELinux metadata and AFS (Andrew File System) metadata too? (These will be for another filesystem later on, but if don't know the answer to either of these, please still answer the above.)
I would like to create a directory public_html/archive that is a mirror of public_html/images, except that deletions in the images directory don't cause corresponding deletions in archive.
I was going to manage all of this in code, but then I figured, maybe the system can handle it for me in a robust way.
Note that the website will reference archive in real time, so it has to be an instant mirror and not something done nightly, etc.
intending to set up an all-in-one server, i threw in the ubuntu server 10.04 (amd64) cd. during the text-install, i set up the device-topology below, and it worked.
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then i tested my raid by hot-pulling off the sda wire (ouch). worked fine, system still worked, and it also managed rebooting from the left sdb (which of course showed up being sda, lacking the first drive). now i am trying to recover this pre-crash state. adding the first disk (showing up as sdb), i can add it to md0 and let it start syncronizing for 2 hours. but... i can?t boot anymore with the recovered first disk being sda...
at first, booting got stuck in an initrd-prompt after complaining it couldn?t find my sys-logical volume. after a lot of trial and error i don?t even get any complaints, just a black screen which would let me wait for a boot for weeks... so, my system does not boot from my first disk, whether i plug in the second or not. my second disk still boots. my last attempt to get booting fine again has been: zero sda?s first and last gigabyte to kill any ids duplicate sdb?s first cylinder to sda to make it bootable reinitialize sdb?s part.table using command o in fdisk for a new disk-id recreate sda1 partition add sda1 to md0
I had a thread earlier asking for help installing Ubuntu Server to my homemade atom based NAS, but I gave up on that (GUI's are more helpful to me ) and so now I'm running Ubuntu 10.10 Desktop 64bit edition.Last night I was finally able to get mdadm set up. I have two 1TB disks set up in RAID1 config. I used
Code:
sudo mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1
to create the array, and then waited until it finished assembling. Then I used System>Administration>Disk
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I have searched all over. I cannot find any info on the description of the Fedora mirror release directory structure and the reason for having a "Fedora" and "Everything" directory? Yes I looked at [URL] I mostly work with the Red Hat 5.x. The Fedora release software is kept on a mirror and the DVD release as, (using i386 release):
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I have built a small test server. I am planing on using this machine a an email and web server to test out its hosting capacities. in the future I will build a larger and more well equipped version.
AMD Athlon x2 2.0ghz
2 160gb SATA drives (hardware raid 1, done through the Motherboard)
2 gb ram (dual channel)
Like I said small test server. I am trying to install 10.04 server edition. When I get to the point of partitioning it asks me to activate the raid so I do. I get through the guided partitioning and get ready to write the file system to the drives and the screen goes red and says that it has failed. On a side note, this works if i install it on the same drives without any raid configuration.
I have a RAID1 array, where mdadm states that one of the disks is "removed." Naturally, I assume one of the drives has failed. The mdadm --detail command tells me that the sda drive has failed. However, further inspection from the mdadm -E /dev/sdb1 command says that sdb1 disk has been removed. I am a bit confused. Can someone clarify which drive is failed? Am I misreading the command outputs?
Code:
sudo fdisk -l
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
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After digging around trying to figure out how to upgrade my local apt-mirror to 10.04, I figured I would share it here so anyone else who does this, can do it with ease. It requires a few steps, and editing a couple files, but the process is relatively painless.This assumes you have an apt-mirror already running on your server. Also it assumes you're using /var/www/ubuntu as your root where all your packages are stored.
The first step is to visit http://changelogs.ubuntu.com and download the meta-release packages. Create a new directory, /var/www/ubuntu/upgrade, and drop the files there.On the client's end, a single file needs to be edited, /etc/update-manager/meta-release. Change the URI's in that file to the URI of your apt-mirror and run your update manager. Your upgrade will start, only asking if you want to change your paths in your sources.list. Agree to it, and the packages will download and configure.
I'm wondering if its possible to add an external, non-Ubuntu mirror to my mirror server?
We have a few packages which need to be deployed during kickstart (Cinelerra and Eclipse plugins), and I would like to put them into my mirror repo so they are grabbed during kickstart, rather than manually adding them after the system is up.
I have an Ubuntu Server on (8.10) running under Citrix XenServer (though that shouldn't make a difference).
I installed on a single disk:
xvda1 - 200 MB - /boot
xvda2 - 9.8 GB - LVM (ubuntu-base)
The LVM is:
swap - 1.0 GB
root - 8.8 GB - /
I have successfully gotten this converted to RAID1 by adding a new drive (xvdb) and following the Debian howtoforge article [URL]
What I have not been able to do, is get grub working properly.
If I fail xvdb and reboot the system, everything comes up and I can reboot and run.
If I fail xvda and reboot the system, XenServer gives me a bootloader error. i.e.: no grub
If someone has done this, can they tell me what grub commands to run to get a successful boot of the primary disk fails?
One of the hard drives in my server failed the other day, backups saved the day and downtime was only a few hours, but when setting up the new drive I went ahead and migrated to software RAID, in the hopes it may give me less downtime in the future when a drive fails. It all went rather well, but my main root partition won't finish syncing for some reason.
sda was the original drive with sda4 as /, sda1 as /boot, and sda2 as swap. sdb was the drive that failed and was replaced with the new drive. So I set up sdb with the same partitions of sda, added it to a RAID1 array, copied files from sda, and reboot to md4 as /, md1 as /boot, and md2 as swap. I added the sda partitions to the array, and the sync went off without a hitch on md1 and md2, md4 progresses well, but after a few hours /proc/mdstat just shows this:
Code:
root@d668:~# cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md2 : active raid1 sdb2[1] sda2[0]
9767424 blocks [2/2] [UU]
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I have a ubuntu sever with a raid1 data drive formated in native linux ext3. I have searched for answers to my question but most likely I'm not asking it correctly. I want to use the data drive to store backups of files from various ubuntu and windows machines. Do I need to reformat the drive as ntfs to enable windows use or can it remain as ext3? For that matter can I reformat as ext4 as a soultion? Again, I wish to use the data drive as a backup storage.
View 3 Replies View Relatedim on 10.10(desktop) and mdadm was v2.8.1 from 2008, very out of date so i tried 3.2.1 -> no change. mdadm raid1 read speeds are the same as single disk. note i used the tests in the disk utility benchmarking tool at first --these showed raid 5 atleast to be much better but when i tried dd reads raid5 dropped off with larger data to almost the same (slow) speed as raid1. compare:
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using two partitions will be enough to show raid1 performs at single disk speed. I dont really want to use a 4 disk raid0 just to get the read speed i should be able to get with raid1 as i dont really care about the size loss. I would of course use raid10 but i have found this suffers from the same problem (achieve same read speed as 2 disk stripe). So whilst im shocked others aren't reporting this, unless there is some obscure reason why my system would give these results i think raid1 in not behaving as it should.
i have a complete local ubuntu mirror; nicely kept in sync by apt-mirror. unfortunately, i need to keep some of the old releases as well. [URL].. kindly provides those. with the upcoming end-of-life of intrepid ibex, i would like to move the packages for intrepid on my mirror to the directory i use for the old-releases, without having to download these approximately 30GB from the original server.
is there a way to move distributions in a local mirror? apt-move seems only capable of rearranging the packages in /var/cache/apt/archives/ .
Looking for a few pointers here.I am trying to automate the adding and removal of two external usb disks to my linux raid mirror (md) that I use for an offsite copy of my data.This is what I currently do.Server has 2 x 500 gb internal disks setup with linux raid 1. (md)I connect 1 of the external usb disks, add it as a secondary mirror to the main array.After it rebuilds, I remove it from the array and take it home.I have two of these external drives so one of them is always offsite, and the other is either being rebuilt, or connected as a secondary mirror.At the moment, this involves running commands manually. I cannot seem to figure out how to automatically add these disks from and to the array with a script. It seems that every time it rebuilds on the external disk, it gives it a new UUID.
View 6 Replies View RelatedI have been looking into setting up a local repository for updates etc as we have an increasing number of fedora clients/servers. Searching the web I found multiple how-to's on how to accomplish this little project. One thing that bothers me is that each how-to seems to refer to a "static URL" mirror for rsync to get the rpms.
View 1 Replies View RelatedI am Setting up 3 HP Proliant servers with 2 250GB Hard Drives in each. How Do I mirror the drives, and link all the servers together??? I am installing Centos 5.3. From the software install menu I installed Gnome, and the Server software, but can't seem to figure out how to get into the server side of it from gnome. Sorry for all the questions, but I have been out of the loop of all this for about 8 years and trying to re-learn everything.
View 4 Replies View RelatedI occasionally enter "rm -rf /bin" instead "rm -rf ./bin" under root. How can I recover /bin directory on my Fedora 10. Or may be reinstall with minimal tesualties?
View 6 Replies View Relatedthe permissions for my home directory were accidentally changed from 'access files' to 'create and delete files', and I changed them back, but ever since then I am not able to change any preferences/settings at all. power management, themes, panels, emerald, anything. my user account is supposed to be the administrator, and all the user privliges are checked. how to get control of my computer back?
View 9 Replies View RelatedI have a drive with an NTFS partition where all the files were deleted. What I'm looking for is a way to rebuild the directory structure and recover the files. I really, really want the directory structure as the partition contains 460 Gigs of data. Normally I would use the tools here: [URL] but I've never dealt with this much data before. Everything there that I've used creates a pretty messy dump however.
I have used ntfsundelete before but only for a few files at a time. I have no idea what would happen if I tried to run it on a partition of that size. I'm comfortable with data recovery but this amount of data is beyond me. I've run ntfsundelete with no args and from what I can tell of skimming the pages of output all the files are fine. The partition has not been written to.