Questions tagged [data-recovery]

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

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XFS / ZFS - Unable to mount filesystem - I/O Error

We have a server with Ubuntu 20.04.6 LTS. It is the secondary storage for our backup, with 12x8TB HDDs in a RAIDZ3, with an XFS filesystem on top. A couple of days ago, one drive failed. I thought, &...
Sabsoun's user avatar
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How to import ibd files into a new mysql 8.0 installation on windows (mysql.ibd is lost)

I have a mysql server and its default database is called mysql. Suddenly it stopped and I did not start it and it gives me this error. 2024-02-05T22:10:06.810728Z 1 [ERROR] [MY-012179] [InnoDB] Could ...
roma salah's user avatar
5 votes
1 answer
164 views

Windows Data Deduplication: Determine which file/s use a given chunkfile?

Using Windows Server's data deduplication feature: Given a specific chunk file in the chunk store, is it possible to determine which file/s include that chunk? The use case here is that unreadable ...
Ned Martin's user avatar
1 vote
0 answers
53 views

Linux soft RAID5 does not come up after multiple power failures on some discs, what to do?

I have a backup of all important data. At the end a restore is needed. But I want to first try something before I would go this way and it is a good situation to learn something about all the stuff I ...
ljsdflkjsldfjlsf's user avatar
2 votes
1 answer
87 views

Is there a way to manually replace one disk in Microsoft Storage Spaces?

I got a microsoft storage spaces which using 4 disks and acting as RAID0, recently I found one of them failed. I knew I should add a new disk into this space and kick the failed one out, but instead, ...
Micr's user avatar
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1 vote
1 answer
175 views

Recover ZFS mirror from pool with unavailable device

I tried to expand my two-way mirror to a three-way mirror. The new drive had some filesystem issues (ext4) so I tried to force zpool add -f the drive for ZFS to handle for me. This led to a weird ...
aqua's user avatar
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0 answers
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Repair a forced fsck-ed LUKS volume

In a moment of distraction, I'v managed to run: # fsck -Ty /dev/sda1, where /dev/sda1* was a LUKS encypted volume. I don't have a recent backup, so I can't restore. And the backup I have is for the ...
adi8fego's user avatar
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0 answers
73 views

Data restoration of a RAID1 drive from a QNAP NAS

I have a dead QNAP HS-251 NAS enclosure, using two disks in RAID1. The enclosure is dead, but the drives seem fine. I would like to recover the data on it. . Of course, I have no backup... Stupidly,I ...
pim999's user avatar
  • 109
1 vote
1 answer
335 views

How to rescue an encrypted LUKS partition that was partially modified by a Windows tool?

On a system with dual boot, the Windows tool Dell SupportAssist started to modify partitions now I ended up with a broken Linux installation. The Linux installation is/was Ubuntu with an encrypted ...
alexanderadam's user avatar
0 votes
0 answers
120 views

BTRFS after multiple power outages bad checksum

After multiple power outages, btrfs have bad checksums, is it possible to recover it? Outages were on Dell R740xd with PERC H730P Adapter looks like the cache was unwritten. now trying to recover in ...
Aleksandrs's user avatar
5 votes
2 answers
196 views

Can ZFS send/receive help me recover from partial pool loss after upgrade to Ubuntu 22?

I have a long-running ZFS pool under Ubuntu, which has been through many upgrades. After upgrade from Ubuntu 20 to 22, the encrypted filesystems refuse to mount, though the rest seem OK. zpool ...
rptb1's user avatar
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-1 votes
1 answer
51 views

Silicon Image Raid5 search for data recovery options [closed]

In a HP server with windows 2008-R2. There is a PCI Silicon Image SATA raid controller with 4 SATA disks. In the controller is a config to make them in a Raid5 config. Windows is seeing them as 1 ...
SmartThinker's user avatar
0 votes
0 answers
526 views

LSI MegaRAID SAS 3108: Restoring the online state from Foreign Bad (Frn-Bad) state

We have a Virtual Disk in RAID 5 using only 5 disks, one disk probably is broken because it was in an alert before. Another disk was accidentally pulled out and then it was marked as Frn-Bad when it ...
Daniel Guariz Pinheiro's user avatar
1 vote
1 answer
158 views

Microk8s - Non-HA single node, leaving node removes all pods

Iam running the microk8s in ubuntu in no high availability i.e. there is a single node onto the same machine where it is installed. I updated the certificates and then i issue following command: sudo ...
Umair Khan's user avatar
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0 answers
97 views

How to rebuild the filesystem of a recovered partition

I managed to ruin a server drive by trying to clone it to another drive with dd. In the process, the original boot and sda1 partitions were overwritten. I immediatly stopped using the drive,I made an ...
Expired's user avatar
0 votes
1 answer
263 views

How to recover partition/filesystem from failed dd command

I have a server with two SSDs of 250GB each.sda contained all my stuff while sdb was empty. I was trying to copy drive sda to drive sdb using the following command: dd if=/dev/sda of=/dev/sdb conv=...
Expired's user avatar
-1 votes
1 answer
44 views

Can I restore my HP array after 2 disks replacement?

I have HP array with 12 disk each on 2 TB. I configured them with RAID5 Suddenly two disk has ben failed and after two days another disk have been failed. And the array failed to start. I replaced the ...
Abd Alrhman's user avatar
0 votes
1 answer
461 views

Copied data to LVM-Thin pool by mistake

I'm here today because of a big mistake that I have made. I created an LVM-Thin data pool (and not on a LVM-Thin LV) on my Proxmox server and (don't ask why) ran a mkfs.ext4 on the pool then mounted ...
Hidd's user avatar
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0 votes
1 answer
149 views

Recover files from deduplicated volume in Windows Storage Server 2016

We have a Windows Storage Server 2016 having some volumes with Storage Deduplication enabled. Its OS crashed so we had to re-install the OS (couldn't restore from backup). There are some files which ...
Piyush B's user avatar
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0 answers
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Data reconciliation for applications

I need to create a plan for a catastrophic data loss scenario where I need to recover some services (multiple apps each) from bare metal using data backups. The process (i believe) requires the ...
ANURAG MATHUR's user avatar
2 votes
0 answers
119 views

Transferring RAID1 to a new motherboard after HDD failure, and no "Superblock" found

First an OS SDD failure followed by a mobo failure, new mobo/cpu/ram later, and I have a RAID1 with a single working disk, and I am trying to get it remounted so that I can add in a new replacement ...
Aslan French's user avatar
0 votes
1 answer
255 views

ddrescue only rescued half the drive, how do I salvage the rest?

I have a USB hard drive that appears to have failed. Now I'm trying to transfer as much data as possible to a fresh drive with ddrescue -n -f -v /dev/sdb1 /dev/sdc2 recovery.log. I ran into the error ...
Volker's user avatar
  • 101
1 vote
1 answer
136 views

recovering raid5 from 3 working drives, one has a read error

i had 4 drives, lost one drive before, and now another drive was reported by the qnap web gui as having a read error (i did a bad block scan). now i want to insert a new drive, in the lost drive's ...
constatinus's user avatar
0 votes
1 answer
290 views

Recovering RAID5 - using Linux "mdadm"

Using Linux mdadm to recover from failed disk / partition. Here are titles of the steps I took so far - I can post detailed copy if it helps. ( I am not sure how to post file link here...) The last ...
Jan Hus's user avatar
  • 117
2 votes
1 answer
448 views

Recover storage spaces pool

I've got an old 5x5TB storage pool that I am convinced I set up with two-way parity at the time but now it seems is actually just one-way parity that right now refuses to function anymore. One disk ...
Gelunox's user avatar
  • 149
0 votes
0 answers
130 views

Can't boot on my Linux anymore after changing boot order (dual boot windows/debian)

Some months ago, I changed my boot order to make my windows in first boot position. Since this day I can't boot on my linux anymore because I don't see it when i'm booting. After some research I've ...
Eliot-BPJ's user avatar
0 votes
0 answers
67 views

What can be done about files with CRC errors?

I have some files that are refusing to copy from one drive to another, giving Cyclical Redundency Check errors on windows 10. I really don't think there's a problem with the drive(s) they're both ...
dsb27's user avatar
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0 answers
103 views

Bit-rot related filesystem recovery with known location of a bit-flip

Bit-rot is very real, having caught one example I now face an HFS+ file system error investigation - suggestions welcome. Dear all, I'm looking for advice please about next steps having found a single ...
user73225's user avatar
0 votes
1 answer
937 views

Windows 10 safely delete recovery partition

One of our processing PCs uses Windows 10 Pro, and I am the one in the unfortunate position of trying to upgrade the capacity of its C:\ drive (SSD) from 1TB to 2TB. I created an image backup using ...
rdi_pck's user avatar
  • 31
22 votes
2 answers
5k views

Server motherboard died and took Intel RAID controller configuration with it. How do I recover the data?

Old server using a S1200BTS Intel mobo died and has been sitting in a closet for several years. I replaced the motherboard and found that it was originally configured using an onboard hardware raid ...
Benjamin Jeffrey's user avatar
0 votes
1 answer
503 views

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 ...
ever geovany Escobar's user avatar
0 votes
1 answer
377 views

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 ...
Gary Aitken's user avatar
0 votes
2 answers
118 views

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 ...
Raven Cheuk's user avatar
2 votes
1 answer
875 views

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 : ...
Tamil's user avatar
  • 121
2 votes
1 answer
1k views

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 ...
soulmerge's user avatar
  • 161
2 votes
0 answers
382 views

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 ...
Arvo Bowen's user avatar
-2 votes
1 answer
452 views

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 ...
user2330237's user avatar
0 votes
1 answer
179 views

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 ...
Adrian Petrescu's user avatar
0 votes
0 answers
157 views

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 ...
james's user avatar
  • 113
2 votes
3 answers
2k views

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 ...
Adil Malik's user avatar
8 votes
1 answer
2k views

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 ...
adamsfamily's user avatar
2 votes
0 answers
736 views

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 ...
user714559's user avatar
2 votes
1 answer
940 views

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. ...
Parzival's user avatar
-2 votes
1 answer
252 views

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-...
soundsofpolaris's user avatar
-1 votes
2 answers
824 views

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 ...
Darwin's user avatar
  • 107
1 vote
0 answers
544 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 ...
jctest's user avatar
  • 11
0 votes
1 answer
2k 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 ...
lex's user avatar
  • 1
0 votes
1 answer
128 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 ...
theThinker's user avatar
2 votes
1 answer
344 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 ...
user607743's user avatar
0 votes
2 answers
832 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 ...
Surya Pratap's user avatar

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