Server :: Recovering Of RAID5 Data Loss?

Aug 11, 2010

how to recover A mounted RAID5 data???

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Server :: Recovering Software RAID5 Array?

Oct 29, 2010

I've had software RAID 5 arrays for a while now, so they were set up before a RAID array could be partitioned. I had two separate RAID 5 arrays on the same set of drives. One was for / and the other for /home. I moved the / to an SSD and figured I'd expand the other RAID array by failing a drive, repartitioning it then adding it back in. After repeating for the remaining drives, I could then expand the RAID array to use the full size of the drives.

Partway through the second drive being added back in, the RAID array stopped with a kernel error. The drive I was adding and another drive both showed as failed. I couldn't restart the array so I copied the failed drive (Seagate's SeaTools did show it as faulty, but without SMART being tripped) to a new one and tried again. dd_rescue reported the drive copied correctly but I still couldn't restart the array.

So I tried the old standby of recreating the array. This allows me to start it but the ext3 file system won't mount. So I then tried my script (listed in another thread) to try every combination of drives to assemble the array and mount the file system. Still no luck.

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Server :: Recover RAID5 Storage Array DATA Using Xfs_repair?

Jul 5, 2011

I have an Acer Altos EasyStore SATA NAS box that hung, the only way to reboot was to crash the system (unplug it). Upon reboot it was not recognising the hard drives (it wanted to do a destructive reinitialize). Most of the importent data was backed up, however some was overlooked and we'd quite like to get it back. Removing the disks and placing them in a PC with enough SATA bays to cope, and booting with a live linux distribution (System Rescue CD) I can see the 4 drives are not suffering hardware error and that the original partions exist. Using mdadm I can assemble the Arrays without error (seems to be three but the only one I am concerned with is the RAID5 array of about 3TB). /dev/m1p2 mounts as a loopdevice once an offset is entered. In turn this mounts as an XFS parition. However despite df showing the partition almost to be full. ls -l or ls -a on the mount point shows it to be empty!

I got thusfar using a translation from a German language forum, unfortunately I only speak a little German, and the only other English language post on a simlilar matter I found within that site had no replies. The next step was to unmount loop, then run xfs_chack and xfs_repair on the file system. xfs_check returns that there is are a few dir size and offset errors along with link count mismatches. This I would presume normal for a file system that has become slightly corrupted. xfs_repair (version 3.0.3) gets as far as Phase 3 it finds and corrects zerolength entries, offsets on directories and bogus inode numbers. However the final two lines are:

Code:

realloc failed in blkent_append (2671166480 bytes)
zsh: segmentation fault xfs_repair /dev/loop1

A search on the error missing out data size just returns code to generate it, is anybody able to explain what it means? Also remounting hard drive, ls and varients of still do not return anything. Am I missing some thing (root I am logged in with now would have different credentials presumably to root on the NAS box, so how do I get around this)?

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Ubuntu :: Recovering Data - This Directory Has Been Unmounted To Protect Your Data

Jun 3, 2010

Ubuntu 9.10 64bit. Acer Laptop

Using ubuntu 9.10 cd to access laptops hard drive.

foun readme file in /media/disk/mark

opened with openoffice. THIS DIRECTORY HAS BEEN UNMOUNTED TO PROTECT YOUR DATA.

From the graphical desktop, click on: "Access Your Private Data"

or

From the command line, run: $ ecryptfs-mount-private

So I tried a couple of ways...

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Server :: Recreate A Raid5 MD0 Into A Raid5 MD3?

Jan 9, 2010

I have no drive failures but just need to recreate a raid5 set as the next free MD disk number. Originally I built a temp OS of debian on a single drive and had 4x2TB drives in a raid5 software array (MD0) this worked fine and allowed me to move all data to it, and remove our old fileserver. I have now pulled out the 4 x 2TB Raid 5 drives and created a new OS on two new 80GB drives, partioned as follows,

MD0 is now 250mb Raid1 as /boot
MD1 is 4GB Raid1 Swap
MD2 is 76GB Raid1 as /

If I turn off and push back in the 4x2TB drives I cannot see a MD3. I presume I would need to create a MD3 from these 4 drives but I dont want to mess things up as its live data. So im here asking for help, or a bit of hand holding to get it done right.

PS - Its a Debian Lenny 5.0.3 Raid1 fresh install replacing a Debian Lenny 5.0.3 on a single disk.

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Ubuntu :: Recovering The Data From Hdd?

Jul 3, 2011

My machine has dual boot windows xp and ubuntu 10.04. Today accidently i deleted two of my ntfs drive which contained vital projects of my college. Can anybody help me to recover my lost data.

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Ubuntu :: Downgrade Mysql From 5.1 - 5.0 Without Loss Data?

Jan 7, 2010

i have installed ubuntu server 64bit with lamp so all in one (apache, mysql and php) and i need to downgrade mysql because of serious problems with mysql 5.1 and this is the only solution. But i need to be working with apatche and php also and have my.ini like i have now (can backup it) so is there any save way to do that?

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Ubuntu :: Data Loss And Backups When Upgrading?

Jun 14, 2010

I installed Ubuntu 10.04 on the laptop and it looks pretty good. I currently run 9.10 on the main desktop and would like to upgrade to 10.04, by pressing "upgrade" in the update manager, but I have some questions before I do, namely about data loss.

If I upgrade, will stuff like Thunderbird keep my emails, FF keep its profile (cookies, bookmarks, addons etc..), the documents keep all the documents, I have an apache server installed with a few websites - will they still be there after an upgrade? I also have a virtual machine with windoze on, what about all the stuff in there and VMware itself?

Or, will I need to back everything up onto an external hard drive (not sure how to backup Thunderbird and FF), and then reinstall everything, and transfer all the documents, websites etc.. back over again??

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Red Hat / Fedora :: Setup RAID 1 Without Any Data Loss

Dec 7, 2010

I have a Dell workstation, 2 HDD, HDD 1 setuped Red Hat 5.3 with LVM, and that HDD 2 is empty, not install RAID 1. And, I want to setup RAID 1 (hardware RAID)...but, have a problem. I don't want to lost data on HDD 1 when I setup raid, I try ghost or backup it, but when I restore, it error because LVM is setup on that.

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Slackware :: Data Loss After Sudden Reboot On Xfs

Oct 25, 2010

I have a laptop running slackware-current. The disk is /dev/sda and the root 'sda1' is xfs formatted (there is also linux swap at sda2).

recently I was trying to setup openvpn and had to copy a folder with configuration files from /usr/doc/openvpn_<version>/easy-rsa to /etc/openvpn.

I am sure the copying completed cause I got a prompt, but a few seconds later the battery died on me. When I got mains and powered it up, I could see the directory I copied under /etc/openvpn, and the files where all there too. but they all contained nothing. i.e. they had a size of 0.

I read [URL] Fthat an external journal filesystem for root is not supported. I am not sure If it applies to my situation though. As in does it use an internal journal instead?

and the bottom line is: shouldn't the copying have completed successfully? shouldn't I be worried, that this copy failed?

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Red Hat / Fedora :: Growing RAID5 Without Back Up Data?

Feb 15, 2011

I am trying to build a media server for my home and still in the process of evaluating my OS options (Ubuntu Server, Fedora Core, or Win Server). I am planning to use four 1TB drives initially for the RAID5 array. Once it fill up i will add more 1TB drives.

My question is can Fedora Core create a RAID5 array and grow latter without having to back up data to external hard drive and re-create the array? I am looking for something that is easy to use and manage. If Fedora Core doesnt have this option, can you recommend other distributions that can do this?

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Fedora :: Growing RAID5 Without Back Up Data?

Feb 15, 2011

I am trying to build a media server for my home and still in the process of evaluating my OS options (Ubuntu Server, Fedora Core, or Win Server). I am planning to use four 1TB drives initially for the RAID5 array. Once it fill up i will add more 1TB drives.

My question is can Fedora Core create a RAID5 array and grow latter without having to back up data to external hard drive and re-create the array? I am looking for something that is easy to use and manage. If Fedora Core doesnt have this option, can you recommend other distributions that can do this?

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OpenSUSE Hardware :: Recovering Data From Old HDD

Mar 27, 2011

I've just got a STA/IDE to USB 2.0 gadgetas a quick and dirty way to get data off a HDD Plugged everything in hoping with no particualr reason that it would work like a USB stick. Device notifier spotted drive but wouldn't mount it

Code:
dmesg | tail
[20197.639369] sd 8:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[20197.639373] sd 8:0:0:0: [sdb] Sense Key : Medium Error [current]
[20197.639378] sd 8:0:0:0: [sdb] Add. Sense: Peripheral device write fault
[20197.639383] sd 8:0:0:0: [sdb] CDB: Write(10): 2a 00 00 60 7c cf 00 00 08 00
[20197.639391] end_request: I/O error, dev sdb, sector 6323407
[20197.639397] Buffer I/O error on device sdb6, logical block 8210
[20197.639399] lost page write due to I/O error on sdb6
[Code]....

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Ubuntu :: Recovering Data From Scratched DVD?

Jun 1, 2010

I have a DVD that I want to recover. The problem is that it will not mount because it has a small scratch at the beginning of the first track. Is there any way to force mount the DVD and recover at least the unscratched part of the DVD?

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Ubuntu :: Recovering Some Data From Raid 0?

Aug 11, 2010

So I've pulled two hard drives out of my busted windows xp system (dead mb) and I'm trying to get some data off of them. The drives are in raid 0, so my friend told me that I might be able to do something if I use linux. Some late night searching on the internet directed me to a few resources, one of which was this forum. I've tried 2 methods, neither of which have worked.

1. mdadm

ubuntu@ubuntu:~$ sudo mdadm --detail /dev/sdb
mdadm: /dev/sdb does not appear to be an md device

2. dmraid

ubuntu@ubuntu:~$ sudo dmraid -s
/dev/sdb: "sil" and "hpt45x" formats discovered (using hpt45x)!
ERROR: sil: wrong # of devices in RAID set "sil_agafdhcebccj" [1/2] on /dev/sda
ERROR: removing inconsistent RAID set "sil_agafdhcebccj"

[code]....

I've got some files for work that I'd really like to get off there. I've played with unix a bit in college and I've ran ubuntu before, but usually using the GUI, so a lot of this stuff is over my head. But from what I gather, my system thinks that one of the drives isn't a raid drive?

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Fedora :: How To Resize Existing Partition Without Data Loss

Dec 4, 2009

In the process of preupgrading to FC12. Towards the end of the process I get a warning that my /boot partition isn't big enough (12 recommends minimum of 300Mb).

My disks:
[root@fatbeast boot]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_fatbeast-lv_root
35G 6.6G 28G 20% /
/dev/sda1 194M 176M 8.4M 96% /boot
/dev/mapper/vg_fatbeast-LogVol02
29G 25G 3.2G 89% /home
tmpfs 1.9G 676K 1.9G 1% /dev/shm
/dev/sdb 7.5G 319M w7.2G 5% /media/CDF2-6BE2
[root@fatbeast boot]#

Is there a tool I can use to resize my existing partitions WITHOUT data loss? I've been using gparted up to now for sorting partition stuff, does that maintain data when resizing (assuming I run from a boot CD or USB rather than a running system)?

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Fedora :: Decrypt An Encrypted Drive Without Loss Of Data?

Mar 15, 2010

Can I decrypt an encrypted drive without loss of data?

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Ubuntu :: External HDD FAT32 To NTFS With No Data Loss

Nov 18, 2010

I have a 1TB External HD that at the time of purchasing was used with my PS3 which only allowed FAT32 HDs. But now I am using it for other uses. I have came across the problem of the file size limit of 4gb that FAT32 has.The problem is I have about 200 GB filled of data on this HDD and wish to convert it to NTFS with no data being lossed. Is this possible and if so how?

Edit: BTW no Microsoft just Ubuntu

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Ubuntu :: Data Loss From Expanding NTFS Partition?

Aug 3, 2011

This forum might not be the best place for this question, but some people here are pretty knowledgeable and may have more insight than I do about this. Anyways, I'm thinking about expanding an NTFS (Windows 7) partition on my desktop computer into unallocated space. I know that there is a risk when shrinking a NTFS partition due to fragmentation but are there any risks of data loss from expanding a NTFS partition? My common sense tells me there isn't a risk but I want to be 100% sure I won't lose any files.

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Debian :: Recovering Data From Deleted Partition

May 16, 2010

I was trying to delete a logical drive in windows xp and the damn disk management tool in windows not only deleted my other windows partition but also my linux /data ext3 partition. Now I have a unallocated space in place of these partitions. The data is still there but the entries in the partition table have been removed. So how do I recover my partition. I was trying to use the following tutorial. [URK]

I used the sudo parted /dev/sda -- and then rescue START END command and could get back the /data partition. But it gives me the following error while mounting the partition. mount: wrong fs type, bad option, bad superblock on /dev/sda7, missing codepage or helper program or other error. In some cases useful info is found in syslog - try dmesg | tail or so.

What does this mean. How to I fix this? Also when I try to recover my windows partition using parted it scans for a while and then does nothing. It doesnot ask for writing the lost partition in the partition table. What do I do?

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Fedora Installation :: Recovering The Data After The 'update'?

Jul 27, 2009

I started some months ago with Fedora 10, installed (on a barebones hardware package) from a DVD I got with a magazine. I liked it, and it worked fine. When 'Update Available' messages arrived, I installed the updates. When Fedora 11 arrived the same way, I installed that, a few weeks ago, and it, too, was working fine. A few days ago another 'Update Available' message arrived, and I installed it, unfortunately without backing up first. There was a message then that said to restart computer (which was still working fine).

I restarted the computer, and it would go as far as the moving blue bar across the bottom, then stop with a blinking cursor on a black screen. After trying several things, including the recovery part of the original DVD, I put a different, clean drive in the computer and reinstalled Fedora 10 from the original DVD. What I was hoping is that I could then install the original drive as a secondary one and get access to the files on it.

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Fedora :: Recovering Data From A Thumb Drive

Dec 3, 2009

The following quote is the sad, sad story of a thumb drive with the partition table nuked, as told by a friend of mine:

Quote:

Data was recovered from an XP system by booting with a BartPC CD and copying onto a USB thumb drive. Nothing unusual.

System was rebooted into the XP install CD.

The first drive that was found was the 16gb thumb drive (AKA flash drive) and the person (re) installing XP didn't catch the fact that XP presented the 16gb thumb drive instead of the 160gb hard drive.

The drive partition function in XP deleted the partition table - on the thumb drive.

A freeware utility in Windows shows the data but can't recover the file names, so that everything is gobbledygook. Does anybody know of a utility or program under Linux that can help? I have a laptop running F 12 and can do the work if needed, but don't know what program to use.

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OpenSUSE :: Software For Recovering Lost Data?

Mar 15, 2011

A few days ago I accidentally deleted a video file from the trash and I am looking forward to recover it but google could not give me a hand. Even worse I don't remember the name of the file.
Is there any specific free software for this? Or command line? (I am not good at it but can learn fast).

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OpenSUSE Install :: Recovering Data From Drive ?

Jan 8, 2011

I've accidently begun installing Ubuntu Studio onto my OpenSUSE drive I stupidly forgot to to swap my hard drive cables around.

Luckily, the Ubuntu Studio install failed before I noticed the problem, but I need to access the SUSE drive to pull some date off of it. Whats the best way of doing this?

I used a program in windows XP to try and pull the data (mainly holiday snaps) off the drive, but it only works on NTFS file systems, so didn't get me what I need.

How can I access the data on the linux partitions? I'm fairly certain I was using 11.2, which after a bit of googling seems touse the EXT3 file format. Correct?

I'm in over my head here really, as you can probably tell, but what my limited knowledge leads me to believe is that the Ubuntu installer overwrote my partition table (is that right?) but left all the data there still.

Ideally I need a program very similar to the one that I used, but which works for the SUSE filesystem, and runs under XP (my only working OS at the moment)

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Ubuntu :: Recovering Data From USB Flash Drive?

May 27, 2010

A friend of mine somehow managed to accidentally format her USB key the other day. It had all the photos of her daughter on it and she's more than a little upset about it.

I've told her not to fret too much just yet and that I'll have a look to see if there's any way to recover any of the data (specifically the photo's, she's not overly fussed about the rest)

I've had a look through the web, and foremost looks like it's the most promising option but I don't want to start messing around with it until I've asked my fellow ubuntu users for advice and thoughts.

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Ubuntu :: Recovering Data From An Old Hard Drive ?

Jul 4, 2010

I have recently gotten hold of a device that helps me plug my old ATA/IDE hard drive to my computer and view my old files that I wish to recover. I am using Ubuntu and the harddrive that I wish to retrieve the data from also has an Ubuntu install on it. The files I wish to recover are old .doc files, which I want to keep to remember my old writings.

The problem I have encountered arises when I wish to open some of the files. The icon for some of the files, which happen to be my best writings, has an X on the top right, indicating that I cannot view the contents. When I click on the files, the following error message pops up: "Access to /media/c885571b-a6e5-4a2d-937a-78af7050910/george/Courses/hist388/Passion.doc was denied."

Now, I am guessing that I need to be able to log in as superuser or something to be able to access these files, so I logged in my terminal as super user by following the instructions outlined on this page: [url]

I still did not have the sufficient access required to be able to open the files that I would like to retrieve.

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Ubuntu :: Recovering Data From Failed Upgrade

Oct 2, 2010

I've got 10.10 running trying to recover files from 10.04/10.10 I don't know what to call it. I did update-manager -d but all I get is a bunch of failed packages when I try to run it, so I downloaded the full RC iso. Now I'm trying to recover my stuff from the HD using a live-usb. The only problem is, when I try to copy the files onto my SD card, I do not have permission to access some of the stuff on the HD and some of the stuff like the "Desktop" I do.

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Ubuntu :: Recovering Data From A Formatted Partition?

Dec 19, 2010

I just installed kubuntu 10.10, replacing an older installation. I have three hard drives one of which had all of the data I wanted to save, about 500gb. I repartitioned and formatted the other two drives and made sure that the data drive would be mounted but not formatted. When I booted into my new installation, the data drive was blank. I'm not sure if it's relevant, but I had just upgraded the file system from ext2 to ext4 before starting the installation.

I've been trying to recover my lost partition with testdisk. The website has instructions for recovering a formatted partition. It looks like it's working until the instructions tell me to choose Boot and RebuildBS, which I don't see as options. Can anyone give me any advice on how to recover? How did this even happen? Has anyone had a similar issue with installation?

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Ubuntu :: Recovering Private Data - Desktop ?

Jan 7, 2011

Since recently I have installed windows (dont worry I will be back to ubuntu soon enough but I've ran into some trouble), I had installed windows on my main hard disk (I couldn't install windows on my 2nd hard disk for some reason).

There were 2 partitions on the main hard disk, 1 which had all my data and another which had all the system fyles for ubuntu on it I believe.

Now I deleted the small system fyle partition and installed windows over it thinking I'd have all my data on the other partition when I needed.

But when I started up ubuntu with a live USB (I had made it prior to deinstalling ubuntu because I wanted to go back asap) and browsed my files, I noticed that I couldn't get to my private data anymore!

The /home/user partition is still there but it only has a file in it which says something like "recover-private-data.desktop" but when I double click it (made it executable) it just pops up a terminal real fast and disappears.

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Ubuntu :: Package Available For Recovering Data From The Usb Drive?

Mar 24, 2011

let me know is there any package available in ubuntu for recovering data from the usb drive

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