Questions tagged [data-recovery]
Reclamation of deleted or otherwise removed/corrupted data (files)
429
questions
0
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15
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EXT4 partition became empty after reboot - why? possible to fix? [migrated]
TLDR: I had a 1TB RAID1 partition containing 800GB of files before rebooting, now after rebooting, the partition is empty.
Hardware: dual SATA 1TB drives in RAID1 (ASUS PIKE card, which is a LSI card)....
- 855
0
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0
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26
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How to recover corrupted HDD with LUKS encryption?
There's a 1TB HDD which is somehow corrupted. It has only one partition and it's LUKS-encrypted, as far as I know. The password is known. The HDD used to prompt for the password right after it was ...
- 145
0
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2
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27
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How to recover deleted SQL server in Azure?
I mistakenly deleted the database server. I need help. I made the mistake of creating a new server with the same name, will it be possible to recover a database?
I have previous resource name data and ...
0
votes
1
answer
14
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mysql, relocating individual databases vs entire data directory
I need to relocate mysql customer databases to another disk, for the purposes of:
1. Separation of user data from system files
2. Ease of backing up system and user data separately
3. Ease of ...
0
votes
2
answers
75
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One bad sector causes the whole RAID0 to fail? [closed]
In our server, we have four SSDs. The first one is for OS, and the remaining three are for RAID0.
Today, the disk mount corresponding to RAID0 suddenly goes missing. When I check the disks, the 3rd ...
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1
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1
answer
102
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How to use ext4magic in LVM?
I'm trying to recover using ext4magic.my partition was LVM.
try to execute command
ext4magic /dev/sda1 -J -f -s 2048 imges/
error
/dev/sda2 Error 2133571347 while opening filesystem
ext4magic : ...
- 111
0
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0
answers
27
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ZFS after disk failure: most of data seems to be intact, but how to extract?
I have a zpool after disk failure. Attempt to import it (even zpool import -F -T 12855264 -R /mnt -f rpool) yields errors
Dec 4 12:56:54 freebsd kernel: Solaris: WARNING: can't open objset 1035, ...
- 101
0
votes
1
answer
240
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Recovering data from a zpool with a missing device
I have a zpool consisting of two mirrored drives, storing all my personal data. I wanted to add another mirror drive, since the other drives have been in use for several years now. Instead, I managed ...
- 121
2
votes
0
answers
119
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Recovering data from a Dell MD3220 array after both controllers have databases that were corrupt
I have been working on trying to restore data from an array created on a Dell MD3220 PowerVault storage unit. On the phone with Dell and another support group for weeks now and running into brick ...
- 765
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32
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How to recover centos root data after change in formatting type?
To better explain what is wrong now with my harddisk let me tell you the series of events:
I was trying to expand a CentOS root partition. In order to do that I first tried to unmount and remove the ...
-2
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1
answer
75
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Recover data from failed RAID 5 Dell Poweredge T710 Server [closed]
Very important data on RAID 5 array on poweredge T710 server - how can I get the data back? Willing to spend money to do it (eg buy a replacement system and swap the disks in), would prefer not to ...
- 97
0
votes
1
answer
56
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Recovering a nested PV
On my Proxmox 6.4 host, I had an LVM Thin pool that was 250GB large. I created an Ubuntu VM (which used LVM for the root partition as well) on it, but accidentally oversubscribed it, so the PV inside ...
- 103
0
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0
answers
72
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RAID 5 Data Recovery (Missing Partition)
I really need help.
I am running an XCP-NG server, with an LSI MegaRAID 9260-8i card installed. I have a RAID 5 virtual disk with one partition on said disk that takes up all the space. That partition ...
- 13
2
votes
3
answers
1k
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Need to recover RAID 6 array
By definition
RAID 6 is an array of independent hard drives equipped with two
independent and distributed checksum schemes
Does that mean I can recover each of the hard drives one by one using ...
- 121
0
votes
1
answer
122
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How do you generate a new encryption key for a drive that uses SED (Self Encryption Drive)
So I'm currently learning more about NVMe drives that ship with a feature called SED (Self Encrypting Drive). Take the Smasung 970 EVO for instance. It clearly states that it features SED.
The 970 ...
- 101
0
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0
answers
21
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Create a boot partition snapshot (win10)
I'm slightly desperate, of what is the best practice to:
install a fresh version of windows 10
strip it down
install applications you need
setup configure everything
create a snapshot of the whole ...
- 133
0
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0
answers
352
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Hard Drive Recovery - I/O Error - Bad Partition Table and Filesystem
I am attempting to recover an external hard drive. It is western digital (like always).
Force mounting does not work:
user@linux:/home/user# mount -t vfat /dev/sdb1 /media/test1 -o force,umask=000
...
- 101
8
votes
1
answer
2k
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Does one failed drive + one single bad sector destroy an entire RAID 5?
During planning my RAID setup on a Synology Disk Station I've done a lot of reading about various RAID types, being this a great reading: RAID levels and the importance of URE (Unrecoverable Read ...
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1
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0
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202
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Progress for zpool import -fFX
I'm running zpool import -fFX on a 8x4TB striped, mirrored (raid10) pool. The documentation states the extreme rewind import (import -X) performs a full traversal of all blocks in the pool for ...
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2
votes
1
answer
333
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Recovering data from TrueNAS pool in Ubuntu
I am having a heck of a time trying to get my data off my drives that were in a pool in TrueNAS. I installed Ubuntu on another drive in the same server and loaded Ubuntu 21.04 and installed zfsutils. ...
- 21
-2
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1
answer
50
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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-...
- 131
-1
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2
answers
76
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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 ...
- 107
1
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0
answers
253
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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 ...
- 11
0
votes
1
answer
731
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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0
votes
1
answer
49
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 ...
2
votes
1
answer
194
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 ...
- 23
0
votes
2
answers
229
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 ...
0
votes
0
answers
36
views
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 ...
- 1
0
votes
1
answer
127
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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 ...
0
votes
1
answer
28
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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 ...
- 103
4
votes
2
answers
3k
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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 ...
- 141
0
votes
1
answer
1k
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 ...
1
vote
1
answer
62
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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1
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0
answers
21
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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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2
votes
1
answer
456
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 ...
- 21
0
votes
1
answer
22
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 ...
0
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0
answers
2k
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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 ...
0
votes
0
answers
179
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 ...
- 1
1
vote
0
answers
1k
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 ...
- 151
1
vote
1
answer
1k
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 ...
- 33
5
votes
0
answers
616
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 ...
- 151
1
vote
2
answers
233
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,...
- 33
2
votes
1
answer
95
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 ...
- 135
0
votes
1
answer
178
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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0
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35
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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 ...
- 1
0
votes
1
answer
1k
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 ...
1
vote
1
answer
364
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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2
votes
1
answer
942
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 ...
- 202
6
votes
1
answer
184
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 ...
- 61
4
votes
1
answer
273
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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