I have an email server that I think is about to have a hard drive fail. It is running an old install of Redhat 9.0 I think. It has 2 120gb hard drives mirrored as a raid1. I want to copy those to a new pair of 500gb hard drives again as the same disk raid1 mirror. What tool would work for this? DD or partimage? Would it all be exactly the same and boot up still?
View 3 RepliesOur company just bought faster hard drives for our webserver. A lot of the software and services set up on this machine have had config files set up, etc.. It would take a while to rebuild it from scratch, which i may have to do. I know most config files are in /etc and i can use apt to spit out a list of installed packages.
Any tips that i may want to know to avoid any gotchas here? We need to minimize downtime, of course, and get everything up like it is now.
upgraded from karmic through update managerANDnone of of my external drives cd drive or flash drives are picked upad to go back to karmic and will remain there for a whil
View 9 Replies View RelatedI'm breaking into the OS drive side with RAID-1 now. I have my server set up with a pair of 80 GB drives, mirrored (RAID-1) and have been testing the fail-over and rebuild process. Works great physically failing out either drive. Great! My next quest is setting up a backup procedure for the OS drives, and I want to know how others are doing this.
Here's what I was thinking, and I'd love some feedback: Fail one of the disks out of the RAID-1, then image it to a file, saved on an external disk, using the dd command (if memory serves, it would be something like "sudo dd if=/dev/sda of=backupfilename.img") Then, re-add the failed disk back into the array. In the event I needed to roll back to one of those snapshots, I would just use the "dd" command to dump the image back on to an appropriate hard disk, boot to it, and rebuild the RAID-1 from that.
Does that sound like a good practice, or is there a better way? A couple notes: I do not have the luxury of a stack of extra disks, so I cannot just do the standard mirror breaks and keep the disks on-hand, and using something like a tape drive is also not an option.
so I setup a raid ten system and I was wondering what that difference between the active and spare drives is ? if I have 4 active drives then 2 the two stripes are then mirrored right?
root@wolfden:~# cat /proc/mdstat
Personalities : [raid0] [raid10]
md1 : active raid10 sda2[0] sdd2[3] sdc2[2] sdb2[1]
[code]....
I am building a home server that will host a multitude of files; from mp3s to ebooks to FEA software and files. I don't know if RAID is the right thing for me. This server will have all the files that I have accumulated over the years and if the drive fails than I will be S.O.L. I have seen discussions where someone has RAID 1 setup but they don't have their drives internally (to the case), they bought 2 separate external hard drives with eSata to minimize an electrical failure to the drives. (I guess this is a good idea)I have also read about having one drive then using a second to rsync data every week. I planned on purchasing 2 enterprise hard drives of 500 MB to 1 GB but I don't have any experience with how I should handle my data
View 10 Replies View RelatedI recently had issues with the latest version of the Linux Kernels and I got that fixed but ever since that has happened none of my Drives will mount and they aren't even recognized.
View 1 Replies View RelatedI suspect this is not new but I just can't find where it was treated. Maybe someone can give me a good lead.I just want to prevent certain users from accessing CD/DVD drives and all external drives. They should be able to mount their home directories and move around within the OS but they shouldn't be able to move data away from the PC. Any Clues?
View 2 Replies View Relatedi have recently setup and installed Ubuntu 9.04 on a virtulal drive usingVMWare 6.04, installed the desktop gui as well, I need to add other drives for data and loggng, which I did in the VMWare side. I can see the 2 drives in ubuntu, but can not access them, I get he unable to mount location when I try. How can resolve this please as I need these to virtual drives to be used as data drives.
View 1 Replies View RelatedI've used it once before but got fed up with the boot asking me everytime I turned my laptop on because I wasn't using it enough. I have Windows 7 on drive C . I want to keep it on drive C. I have several 1.5TB+ drives, and one of them is not being used. I want to dedicate it to Ubuntu, and be able to do a dual boot with my Windows 7 install. Is this possible? If it is, what about when this drive is not connected to my laptop? Will that mess up the boot process?
View 2 Replies View RelatedSo, at the moment I have a 7TB LVM with 1 group and one logical volume. In all honesty I don't back up this information. It is filled with data that I can "afford" to lose, but... would rather not. How do LVMs fail? If I lose a 1.5TB drive that is part of the LVM does that mean at most I could lose 1.5TB of data? Or can files span more than one drive? if so, would it just be one file what would span two drives? or could there be many files that span multiple drives drives? Essentially. I'm just curious, in a general, in a high level sense about LVM safety. What are the risks that are involved?
Edit: what happens if I boot up the computer with a drive missing from the lvm? Is there a first primary drive?
I have Fedora 14 installed on my main internal drive. I have one Fedora 14 and one Fedora 15 installed on two separate USB drives.When I boot into any of these drives, I can't access any of the other hard drives from the other drivesll I can, but just the boot partitions.Is there any way of mounting the other partitions so I can access the information?---------- Post added at 12:42 PM ---------- Previous post was at 09:34 AM ----------I guess even an explanation on why I can't view them would be good too.
View 7 Replies View Relatedi have cretaed RAID on one of my server RAID health is ok but its shows warning. so what could be the problem. WARNING: 0:0:RAID-1:2 drives:153GB:Optimal Drives:2 (11528 Errors)
View 1 Replies View RelatedI have a Centos 5.5 system with 2* 250 gig sata physical drives, sda and sdb. Each drive has a linux raid boot partition and a Linux raid LVM partition. Both pairs of partitions are set up with raid 1 mirroring. I want to add more data capacity - and I propose to add a second pair of physical drives - this time 1.5 terabyte drives presumably sdc and sdd. I assume I can just plug in the new hardware - reboot the system and set up the new partitions, raid arrays and LVMs on the live system. My first question:
1) Is there any danger - that adding these drives to arbitrary sata ports on the motherboard will cause the re-enumeration of the "sdx" series in such a way that the system will get confused about where to find the existing raid components and/or the boot or root file-systems? If anyone can point me to a tutorial on how the enumeration of the "sdx" sequence works and how the system finds the raid arrays and root file-system at boot time
2) I intend to use the majority of the new raid array as an LVM "Data Volume" to isolate "data" from "system" files for backup and maintenance purposes. Is there any merit in creating "alternate" boot partitions and "alternate" root file-systems on the new drives so that the system can be backed up there periodically? The intent here is to boot from the newer partition in the event of a corruption or other failure of the current boot or root file-system. If this is a good idea - how would the system know where to find the root file-system if the original one gets corrupted. i.e. At boot time - how does the system know what root file-system to use and where to find it?
3) If I create new LVM /raid partitions on the new drives - should the new LVM be part of the same "volgroup" - or would it be better to make it a separate "volgroup"? What are the issues to consider in making that decision?
Running Ubuntu 10.04, works fine but does not recognise any drives connected via USB. Does if Ubuntu is run from live CD.
I looked through the forum and have found this problem aired but not seen any tangible answers; my apologies if I have missed some which gave a fix. Don't need to run scripts in terminal and tread water. There must be an answer. If an old lady needed to use an USB drive after she had loaded Ubuntu and had this problem I'm sure she would just need to tick a couple of boxes, and yes, I have had a look at Ubuntu Tweak.
This problem is on my laptop and Desktop PC; have looked at the format area and have tried an USB type drive from a colleague; same result.
I've got a some new servers populated with Hitachi 3tb disks. The disks use the GPT partition table with normal size sectors. I was able to complete an install by using Ubuntu Natty to format the drive and install Grub2, then run a patched version of the CentOS installer following these instructions here: [url]
It works, but I've installed Ubuntu on another partition just in case I need to make any changes to the disk. I'm wondering if I can upgrade to Grub2 and install GPT aware partitioning tools so that I don't have to reboot into Ubuntu to make those changes.
Is there a way to set up your system (running CLI only, no X) to automount flash drives? I know how to mount them manually, but I'd really like it if there was a way to just have the system do it automatically when I plug the drive in so I don't have to do it myself every time.
View 4 Replies View Relatedis there a way to lock cd/dvd rom drives in ubuntu. Also if there is a way to lock usb ports so no one can use pendrives, etc.
View 1 Replies View RelatedI've been Ubuntu 8.10 along with Windows from abt 3-4 monthsFor automatically mounting of NTFS drives that I has which were created by WIndows, I uses NTFS Configuration tool Everything was working fine in both OS's.But how come of a sudden today I'm not able to open any drive that I have which were happening till now.Not only this,at least if we press F9 then we get sidebar,from where we could have opened the drive .even that is not happening.
View 4 Replies View RelatedSuffice it to say, I'm an idjit and can't figure out how to get my USB drives to automount.
View 9 Replies View RelatedI have question, where can I see the drives that I partition when installing ubuntu?
just like in Windows if you go in MY COMPUTER you can see LOCAL DISK C and LOCAL DISK D?
please help me
I have two 1TB drives I want to span for the storage area of mythtv. Not for swap, system or anything else, just storage of myth's files.
My mythserver died and I'm rebuilding from scratch, in a previous life I'd used mdadm and a software raid 0. But this was always a bit of a pita and I'm told it's not necssary. What's the most efficient method of using two drives and could someone point me towards a how to on the subject?
i tryed this [URL]
now i cant reconfigure the drives. the first and 3rd thumbnail appears from that tutorial..
miss the 2nd thumbnail
and cant unmount a any drive
itryed uninstall the software and reinstall it. nothing happens every time i boot all drives mounted automaticaly
This is yet another "I can't see my new disk" thread - sorry, I've had a good look at others and have tried the obvious but I'm stuck. I have a working Ubuntu 9.04 installation - 3 SATA drives, in a home made box on an Intel DG965WH mobo. It's been working well for a long time (which is why I've not felt the need to upgrade the OS) but I'm running out of disc space so I've just bought 2 new 2TB drives (Seagate ST2000DL003).
The board supports up to 6 drives - in fact in previous configs I have had 6 running before.
Now, however:
- the BIOS is seeing the new discs (so they are connected and powered)
- new block devices /dev/sdd and /dev/sde are being created, but I can't use them...
- gparted lists just the three old drives, not the two new ones, in its menus
- sudo fdisk /dev/sdd returns "Unable to read /dev/sdd"
I've tried disconnecting one of the drives - /dev/sde goes away as you'd expect but /dev/sdd still won't work In the BIOS, I have tried different settings - "Legacy" and "Native", makes no difference As far as I can see, 2TB shouldn't be too big to worry the OS.
My computer's motherboard died a few days ago and I'm buying a new machine today. Since I've already got 2 hard drives with Ubuntu on them and all my files, I'd like to just place them into the new machine and fire it up. My question: what will happen if you just "transplanted" the drives into a new computer and turned it on? Will I need to edit fstab or something?
View 9 Replies View RelatedI recently purchased 3 new WD cavier green 500gb drives with the intent of building a raid5 array and running linux. Admittedly I purchased without doing enough research and now I have serious doubts about running an os on raid5 with the onboard controller.So now I am thinking I should run one drive as an OS drive and mirror the other two. I don't have a fourth drive unless someone can convince my wife I need a fourth after already buying 3....
Is it possible to have multiple distributions where ALL distros save their docs to the raid dives? That way I can wipe/install the os and keep my files? I seem to recall that I can be done, just need someone to point the compass.
I had Windows XP and Suse 9.2 running in a 486 Optima MyPC.A toggle switch connected to the master pins of 2 40GB hard drives allowed either operating system to be selected for boot up.The Optima recently died, the 2 hard drives and selector switch have been located in a Dell Dimensions 8300 Bios Rev A04.Needless to say Windows will not start but Suse does and the data on both drives is viewable and Open Office 1.1 useable.The 2 DVD/CD drives in the Dell unit are not detected.How do make these drives operational?You will appreciate I am not too familiar with Suse Linux, having tried several methods I often get "You don't have permission" or similar.How do I change to the Top Level Permission?
View 4 Replies View RelatedI have a device running Linux, which has a master USB and 16 Slave USB's. I need to make the slaves identical to the master.
What i'm doing is reading bytes from the master by reading /dev/sd{master} and writing to /dev/sd{slaves} . I am doing this since I need to display progress of the operation.
Do you think this will pose any problems? Is there any better technique?
Also, if the source drives size is smaller than the dest drive, will it create any problem....or will the USBs still be identical after that..
i have configured the samba as pdc in debian squeeze,in the "View Workgroup Computers" window of windows xp there is linux shared folder icon but when want
to open the folder get this error: \LinuxcpShared is not accessible. you might not have the permissions to use the network resources. Contact the administrator of this server to find out if you have access permissions.
Box is an Intel NUC 5th Gen i5. It has 4 external USB 3.0 ports. It doesn't matter what port I plug the drive into, result is the same. Drives are a WD My Book 4TB. There are 2 of them, currently formatted as ext4, but it was the same deal when they were ntfs.
[URL] ....
I have a fresh installation of Debian 7.8.
It seems to me that I'm not seeing the transfer speeds that I would expect under USB 3.0.
hdparm -t
Code: Select allTiming buffered disk reads: 76 MB in 3.04 seconds = 25.03 MB/sec
lsusb
Code: Select allBus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 002: ID 8087:8001 Intel Corp.
Bus 001 Device 003: ID 1058:1230 Western Digital Technologies, Inc.
[Code] ....
Is this correct for a USB 3 device?