Questions tagged [data-recovery]

Reclamation of deleted or otherwise removed/corrupted data (files)

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Recover data from old LVM partition on Centos 7

a few days back I my system would not boot up and go directly to emergency mode with no luck getting out, so I decided to reinstall centos 7. However, there are a few files that I would like to ...
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I accidently deleted the partition tables of my RAID6 drives

I accidentally deleted the partition table of 2 drives in my 4 drive RAID6 by reversing the order of sudo sgdisk -R=/dev/sdb /dev/sdz parted /dev/sdb print currently reports: Model: ATA ST2000DM008-...
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Recovering data from a single-disk raid1 array [closed]

I had an idea of a Raspberry Pi file server using multiple external disk drives in a RAID array. For starters I only had a single 1TB disk so I setup a raid1 array on that disk with the intent on ...
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mechanical differences between 2.5 and 3.5 HDD, in long term offline storage context?

I'm researching best media for long-term offline storage. I've decided a couple mirrored, different brands, spinning HDDs being powered every 6mo is the best spot for amount of data x reliability x ...
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25 views

Clone only part of 3 TB disk for rescue

I had a 3TB RAID disk (single partition) that I formatted with ext4, single partition. Then I realized, I need a file on the disk. :-/ I have not written any files to disk so far. I ran photo-rec ...
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48 views

Recover encrypted LVM

I had Debian install running on LUKS encrypted LVM. This morning, I wanted to install OS on external disk to be used on another host, but mistakenly I chose the wrong disk... Few seconds in I noticed ...
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1answer
115 views

How to restore Mysql database from .frm and .ibd files on localhost

I have a VPS server that was hosting a WordPress that has crashed and I think must be deleted. No backups were made. I managed to setup a rescue mode and salvage WP site data via FTP. Because Mysql ...
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1answer
22 views

highpoint rr62x RAID 5 status disable, recover saying parameter error

I have been using a Highpoint rr62x controller(BIOS version 1.3) for about a decade now. The RAID-5 volume is containing 4 disks-each 3TB. For the last five years my RAID has been disabled. I have ...
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65 views

Recover failed RAID1 disk no superblock

I had an Ubuntu installation on RAID1, which was running as degraded for some time without me realizing. The active disk started to have bad blocks and no longer booted, which is when I realized that ...
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1answer
98 views

fsck raid10 ext4 partition currupted, restore data

there is a volume in raid10 /dev/md3 it has a GPT partition /dev/md3p1 in ext4 with a size of 16TB. I accidentally ran fsck -y /dev/md3 causing the filesystem in /dev/md3p1 to get corrupted. fsck -b ...
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2answers
106 views

I accidently ran rm -rf /

I was writing a bash script to automate deleting something. I used the code rm -rf $path/* accidently i ran the script without passing path variable and since path variable is null , the command which ...
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RAID 6 and data recovery

I have a question about RAID system. I have a RAID 6 and according to the RAID 6, two drives can fail without losing data. When a hard drive failed and I unplugged it from server then I can't see my ...
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Restoring VD on Perc 6

PowerEdge server with PERC 6 RAID, two VD, RAID 1 with two drives (mirroring) on each. System went down and when it came back up the four drive status lights all showed green, but a message was ...
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72 views

Recover data from broken RAID 1 drive

I need to save files from a Buffalo NAS Linkstation with two physical drives that is not working anymore (2TB each, Raid 1). Error message says: The bad sectors in the hard drive may have reached a ...
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1answer
24 views

How do I recover Windows 10 with files recovered from a drive [closed]

I had a drive failure about 2 months ago on my custom built PC with Windows 10 (probably professional version). It was a Seagate drive and they sent the drive to recovery and sent back a USB ...
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720 views

Linux XFS partition could not be mounted (can't read superblock) due to suddenly power shutdown, xfs_repair: read failed: Input/output error

After suddenly shutdown, my home directory which is a XFS partition could not be mounted and I can login to system by my account. But I can login with root account (because root and home directories ...
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1answer
654 views

How to mount and recover data after succesfully building the raid again?

We have a synology nas and one of the 2 disks crashed although smart was passed and the data was intact. Note that although the disks are not in a raid, years ago we chose SHR and apparently synology ...
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185 views

ddrescue of a software RAID drive to an .img file, trying to mount results in unknown filesystem type 'linux_raid_member'

I had a Linux sofware RAID10 fail 2 disks on me and after I tried to force an assembly with the start a RAID10 with 2 disks trick, all I got was an empty lost&found directory. So I ran a ddrescue ...
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1answer
42 views

NAS not recognizing hard drive

My work has a Thecus N89000 NAS with 5 hard drives, RAID 5. We had a power outage last week and when power returned the NAS was unable to find RAID and no network folders are found. In the admin ...
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10 views

DL360 gen7 + 2 SSD Raid 10 crashing and amber lighting nonstop - it works fine with 2 SAS HDD

Thats it pretty much, I have this recently acquired DL360 with 2 300gb SAS HDDs. Every thing works fine with them in RAID 10: no crashes, no sudden amber lights, no amber lights after every reboot, no ...
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1answer
150 views

Can UNAVAIL zfs be recovered?

My zfs pool is UNAVAIL and cannot be imported. I wonder if there would be any possibility that it is recovered or I can take out any data from it? Background I took over management of a server that ...
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21 views

Retrieving file and folder inside VM remotely using other system

Recently my teammate accidentally deletes numerous files even important system files inside development server. because of this our staff cannot login even in local so we cannot recover remaining ...
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1k views

Accidentally deleted folder in ubuntu 18.04

One of my client project accidentally deleted and this project was on my aws ec2 instance.I used command "sudo rm -rf /home/ubuntu/project" now that folder is removed and i need to recover it asap. I ...
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129 views

Recovering a btrfs partition

I'm attempting to recover (what I'm told is) a btrfs partition from a RAID5 array and I'm a bit stuck on the next step... The reason I mention it was RAID5 is because the array way deleted in the ...
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694 views

btrfs bad tree block - cant mount filesystem

I'm hoping someone can help me, trying to recover a btrfs pool, that lost 1st drive. I tried to mount the 2nd drive and I've been having fs errors. I got the 1st drive readable again, but it appears ...
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1answer
612 views

LVM after vgcfgrestore got: device-mapper: reload ioctl on (254:19) failed: No data available

Server have Thin LVM with a few volumes: vm-130-disk-0 - was deleted and need to be restored. vm-137-disk-0 - was NOT deleted. Trying to restore /etc/lvm/archive/pve_00336-2034680334.vg which ...
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298 views

Recovering/importing ZFS Linux pool with duplicate pool name

I did something very stupid today in attempting to add a third mirror to an existing Linux zpool named backup. Suffice it to say that I made a couple errors because I don't really do much admin with ...
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2answers
174 views

Recover MySQL tables from removed Proxmox VM

Have the stand-alone Proxmox node with LVM thin and VM 130 volume /dev/pve/vm-130-disk-0 inside it. VM 130 was deleted accidentally. Mysql database was lost with VM. After we've discovered it in a day,...
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1answer
40 views

zfs rollback/recovery of snapshot on different server

I have created a snapshot of zroot/jails/jail1 as jail1@2020-01-10T17:31:40 on server1 and sent this snapshot to zroot/backups/jail1 on server2 The snapshot was properly created on the ...
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1answer
117 views

Recovering as much as possible from a LVM where some PVs failed

I have an LVM drive & filesystem made up of 4 disks. One of them has had a hardware failure and doesn't work anymore. When this happeend some of the files were readable on the filesystem, and some ...
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Data recovery from RAID5 volume managed by hardware controller

I am attempting to salvage as much data as possible off a failed 12 TB RAID-5 volume comprising 4 x Western Digital WD4000FYYZ 4TB hard drives in an OWC RAID enclosure that is based on the Oxford ...
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1answer
683 views

InnoDB recovery from datafiles

First of all, my MySQL DB and Linux skills are not so good. I spent several days searching for a solution and tried several approaches. The following approach is the one I came furthest with. My SD ...
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1answer
205 views

Recover data from RAID1 single disk only

root@rescue:~# fdisk -l Device Boot Start End Sectors Size Id Type /dev/sda1 69632 102713344 102643713 49G 83 Linux /dev/sda2 102782976 467808255 365025280 174.1G ...
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1answer
576 views

RAID partition cannot be mounted, not assigned partition number, after reboot

Problem: I have a CentOS 7.5 server with an array of 4x 3TB WD Reds in hardware RAID 5. The RAID volume has a single EXT4 partition on it. After a recent reboot of the server, the server can no ...
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1answer
115 views

Recovering lost VHDX / VM (deleted by Veeam)

Earlier this week a VM on one of our hypervisors experienced extended downtime (~24 hours) due to some Windows updates going wrong. I ultimately was able to fix the issue, and noticed yesterday that ...
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1answer
206 views

Recover data from RAID 5 with VMFS data store

I own an HP Proliant Gen-6 ML350 server which is not turning on again after a power outage. According to my research it is most likely due to a failue of the power supply backplane or the power supply,...
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1answer
158 views

Diagnosing missing logical volume

EDIT: the system boots off a 16 gigabyte USB key. Apparently, at some point, the 'device name' (sorry if I'm using that term incorrectly) of the boot device changed.from /dev/sde to /dev/sdb to /dev/...
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1answer
45 views

Exchange 2013 powershell mailbox recovery

I wish to script the procedure to bring the mailbox back from Dumpster. In my normal procedure I do as below '$Dumpster = Get-MailboxServer | Get-Mailboxstatistics' '$Dumpster | ? {$_.DisplayName -...
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1answer
215 views

Data corruption when rsync command fails

I am using rsync to copy data from machine A to machine B over a network. If rsync fails while copying the data from A to B, will the data at B get corrupted ? Does rsync has any inbuilt mechanism to ...
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1answer
4k views

How can I recover my ZFS pool, which suddenly went offline and reports that it was “last used by another system”?

tl;dr: I am running a FreeBSD 11.2 NAS server with ZFS on a server with 16GB ECC memory. I've discovered that my main pool has disappeared. ZFS can see the pool, but reports fault ZFS-8000-EY and ...
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0answers
4k views

Restore mongoDB by --repair and WiredTiger

We accidentally deleted the directory rm -rf /data/db which was our MongoDB path, and thanks to extundelete, we recovered it and got the directory /data/db. Here are our files in the directory, and ...
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3answers
3k views

Database accidentally deleted with a bash script [duplicate]

Edit: a follow-up question: Restore mongoDB by --repair and WiredTiger. My developer committed a huge mistake and we cannot find our Mongo database anywhere in the server. He logged into the server, ...
3
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1answer
383 views

photorec photo recovery software not seeing my mounted filesystem - trying to use photorec to recover lost jpegs

What is my situation? I am working in a Dev Ops capacity for a service that manages jpeg files online. We had an unfortunate deploy and our media files (jpegs) are completely gone. I anticipate that ...
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294 views

ddrescue - retry bad sectors starting from the end of the disk

How can I attempt to read bad sectors from the end of the disk, using ddrescue? I have dynamic volumes and the LDR is kept at the end of the disk, unlike MBR. I remember that I've tried --reverse but ...
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2answers
774 views

Failed XFS after resizing partition

I pretty much followed the same general idea as here: Resizing a partition -Resize VMware disk: Through vSphere, resize disk from 100GB to 300GB (Reboot VM) -Delete partition (fdisk /dev/sdb, d, 1) -...
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1answer
107 views

btrfs recover: reliable or last-straw?

The chunk tree of a btrfs filesystem corrupted and I could not recreate it after hour-long reconstruction. As a last resort (besides restoring from backup) I could use btrfs restore -S -x -m -v to get ...
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1answer
53 views

Examine contents of unused space on the HDD

When using managed dedicated services, either virtual or physical, where you're presented with complete control to an operating system installed on some piece of hardware you don't have physical ...
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1answer
567 views

Unable to mount a RAID 5 volume

Evening all, Total n00b when it comes to Linux, I use Xpenology (Synology) as NAS software and following a faulty SATA cable lost my RAID 5 volume - within the OS it's sat in a crashed state. ...
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1answer
777 views

Recover from a clean, degraded RAID-5

Good morning all, I have some NAS software which - for the most part - works great, but when something happens to the Hyper-V host it often fails spectacularly. Today is one of those days. I'm not ...
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1answer
46 views

Retrieve data from an HD with vmfs partition

My problem is the following: I have a 1TB HDD with the information of a server that I need now. I do not know what to do to access the information, inside the HDD there is a vmfs formatted partition ...

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