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Questions tagged [data-recovery]

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

2
votes
1answer
102 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 ...
0
votes
0answers
26 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 ...
2
votes
2answers
41 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) -...
1
vote
1answer
35 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 ...
0
votes
1answer
41 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 ...
0
votes
1answer
110 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. ...
1
vote
1answer
85 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 ...
0
votes
1answer
32 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 ...
0
votes
1answer
565 views

How to recover an ext4 signature deleted with fdisk?

While resizing an EBS volume on Amazon AWS I accidentally deleted the ext4 signature. root@server:~# fdisk /dev/xvdf Welcome to fdisk (util-linux 2.31.1). Changes will remain in memory only, until ...
-1
votes
1answer
68 views

How to recover a TAR file from a partially overwritten XFS disk?

This is the scenario. The environment is Linux (Arch Linux actually). An uncompressed 1,3TB tar file has been written on a freshely XFS-formatted 2TB disk as a backup. Later on, a 586MB UEFI boot ...
1
vote
1answer
83 views

Recovering deleted plain text (emails) files from raw disk image

I'm hosting my own linux mail server for my family. Yesterday my father lost all the mails in his Inbox folder. I'm still not sure whether it's due to a terrible user error or compromised password, ...
0
votes
1answer
83 views

Dual SAN controller failure [closed]

I am new to storage but facing a serious disaster issue of the failure of Dual SAN Controller. Don't know whether this is a right place to ask this question. Anyways the problem is, None of the ...
0
votes
2answers
101 views

Can data be recovered from a scrambled SSD?

If I "shred" (this is a Linux utility/command) an SSD, can the data still be recovered?
3
votes
1answer
131 views

Corrupted LVM Recovery

I had (paying attention to the past time here) a Centos 6.7 host who was migrated using Vmware conversion tool from a HyperV cluster. Therefore, the final configuration of its disks was: / dev / sda1 ...
-1
votes
1answer
45 views

Recovering formatted Microsoft Storage Space Raid-5

I have accidentally formatted my Storage Space. The setup is 3 units of USB 3.0 Hard drives with 4TB each. Total 7.4Tb of storage available. I have used Active File Recovery with no success.It finds ...
1
vote
0answers
25 views

Recovering VCS 2 node cluster in DR?

We are looking for a solution to recover the 2 node VCS Cluster at DR location for a DR Test. Prod: Hardware is Dell with 24 cores 64 GB RAM with Suse 11.4 Linux over SAN Boot & 4 NIC's of 1 Gig. ...
3
votes
1answer
617 views

Faulted zpool recovery - can I dd some disks to new disks to allow me to scavenge donors?

I am in the process of trying to recover a pool that had been degraded and neglected, then had a second mirror member fail, resulting in a faulted pool. For whatever reason, the spare never ...
0
votes
1answer
35 views

highpoint rr640l raid 5 status disable, having difficulty with recover

I have been using a Highpoint RR640L controller (at BIOS version 1.5) for a couple years or more on my primary system. The RAID-5 volume contains 4 disks, 2TB each. This week, one of the disks ...
0
votes
0answers
68 views

MySQL won't start after forcing it to stop

I put my site on maintenance so no one can access it and no new data will come into the database. I was running a query to delete 3 month old data from a table which took almost an hour at which I ...
0
votes
1answer
525 views

How to recover a cached LVM with cache on ram-disk?

In this article there is a nice recipe for how to use a RAM-disk as cache-device for a classical LVM volume. Assumed you have an elder disk, lots of RAM and no SSD, you can boost disk performance to ...
0
votes
1answer
49 views

/etc/services file accidentally deleted on Amazon Linux EC2 instance

I accidentally deleted /etc/services file from my ec2 instance on AWS running Amazon Linux. How can I restore this file? In Ubuntu, I found out that this can be done using netbase package, how can ...
0
votes
0answers
53 views

InnoDB recovery from ibdata1 from disk failure

I started recovering data for a non-profit organization from a server that had a hard drive failure. The mysqldump was not working, but I managed to tar the /var/lib/mysql on time and download via ...
0
votes
2answers
131 views

Restore Mailboxes from Exchange 2007

So i have this customer who recently upgraded their Exchange server from 2007 to 2010. Another pair of techs performed the migration and they left behind the old original database. Well the General ...
0
votes
1answer
94 views

Marvell 9230 - RAID 10 3 disks suddenly appear as unconfigured

I was rebooting my NAS running Open Media Vault, and noticed that the RAID controller (Marvell 9230) reported degraded RAID operation since one disk wasn't found. I shut down the box to investigate. ...
1
vote
2answers
486 views

Office 365 Mailbox of unlicensed user

I'm trying to find any softdeleted mailbox that may be in the recycle bin, due to the licence removal (office or Exchange). Initialy I used Get-Mailbox -SoftDeletedMailbox but the results where null ...
0
votes
1answer
501 views

Mounting LDM data partition

Essentially, the first two LDM partitions on my drive got formatted accidentally (mkfs is pretty... destructive). Windows now detects the drive as "invalid". fdisk -l output: Disk /dev/sdb: 931.5 ...
2
votes
1answer
145 views

Hard Drive TVS Diode Repair Questions [closed]

I have a Seagate drive that died that I would like to recover data off of. I diagnosed the drive as having a failed TVS diode so I removed the diode and the drive began to function again. My concern ...
0
votes
1answer
283 views

Linux: recover data from xfs

I have a broken XFS filesystem on one of my HDD. I ran xfs_repair which was not able to find a secondary superblock to repair the filesystem. Therefore, I am not able to mount the HDD/partition. I ...
0
votes
1answer
121 views

CHKDSK erases VHDX That threw Corrupted/Unreadable Error

A windows 7 Virtual machine instance running on a windows 12 server had a 'blue screen of death' with a REGISTRY_ERROR (Code 51). After several unsuccessful reboots (successfully to safe-mode but ...
0
votes
2answers
90 views

How can I analyze an encrypted HDD?

I have a HDD which I encrypted few years ago but I can't remember the tool I used. How can I find out if I have used TrueCrypt or VeraCrypt to encrypt my hard drive? Thanks.
1
vote
0answers
85 views

Office 365 Data Retention?

Hoping someone could help clear this up -- basically we are looking to configure data retention policies in Office 365. Reading through some of the articles on how data retention policies work with ...
0
votes
0answers
255 views

How to restore the MySQL databases from a corrupted SSD?

My SSD got corrupted. I made a clone of it on an HDD and I have access to all original files from /var/lib/mysql/that_database. I want to import that_database back, but I can't. What I've tried ...
1
vote
1answer
48 views

How to sync azure SDD disk across datacenters?

I'm working on a failover plan for my (at the moment, single Azure region) webservers. My azure resources are due to legacy applications quite oldschool, Windows server 2016 VM's with SSD disks ...
1
vote
1answer
183 views

Mapped VMDK no longer accessible - VMware ESX - recover data

At my company we have a virtual Windows 2012 R2 server running on VMware ESX. The server has 3 disks attached on different LUNs. (Disk 1 & 2 are on a smaller LUN containing multiple servers that ...
2
votes
1answer
154 views

How to recover data on replaced RAID 1 virtual drive, PERC 710 controller

Today I created a new RAID 0 virtual drive using the RAID setup wizard of my lifecycle controller for my two new 4TB SAS dell hardrives. Unfortunately, I misread the warning saying that creating this ...
0
votes
1answer
161 views

Seagate Blackarmor NAS Shared folder recovery

We have a Seagate Blackarmor NAS on which we have some shared folders. Yesterday, suddenly the shared folders were not being shown while trying to access as Windows share. We have CIFS and FTP enabled ...
2
votes
2answers
123 views

full /etc/ recovery from git

I have a CentOS 6.9 server. The full /etc directory was under version control. I accidentally ran 'git rm -R' on it. The server stopped working right away, my ssh session got lost. I managed to ...
0
votes
1answer
44 views

Debian Jessie RAID6 recovery mdadm

I have a Debian Jessie box that lost the RAID volume that had the OS, so I booted Live USB to try to recover the attached SAS controlled external drive bay which has my data RAID6 and it sees 3 of the ...
0
votes
0answers
709 views

Synology: How to restore data from an accidentally deleted volumeX (BTRFS)?

The Synology in question has a RAID6 configured via mdadm which features a BTRFS filesystem mounted to /volume1. This path was mounted into a Debian chroot. The unmount was configured in the chroot ...
1
vote
1answer
354 views

Recover partition table or MBR in EXT4 backup HD

I have a external USB HD for backup formated with EXT4. When I turned it on, it made some weird noise and I was unable to connect to it with ubuntu. Nautilus said unable to mount and many other ...
6
votes
2answers
456 views

Fix RAID 5 with two drives containing bad blocks [closed]

Assume the following situation: An administrator was not careful enough maintaining a NAS server (QNAP QTS 4.3.3) using RAID5 and it has already reached a situation in which two (out of four) drives ...
4
votes
2answers
460 views

Recover RAID 1 data without controller

Nearly 10 years ago I built a PC for a friend and thought it would be a good idea to use the motherboard's RAID controller to set up a RAID 1 array. Since HDDs have a propensity to die quicker than a ...
0
votes
1answer
117 views

How to decrese MySQL Innodb crash recovery time (force MySQL to do it faster)

I'm running MySQL 5.7 with 1GB of innodb_log_file_size on CentOS 7 x64 and I can't change the value of that parameter right now. In the case of crashes, it takes about 20 minutes to recover, but ...
0
votes
1answer
333 views

Restore partially overwritten partition?

I had healthy NTFS partition. Due to mistake, it was formatted to EXT4 and partially overwritten. Naturally, many files are lost. But photorec is able to retrieve separate files, unfortunately without ...
2
votes
3answers
212 views

Which is the worst-case scenario: dying HDD or SSD?

We all know SSD offer many advantages (such as speed) over HDD drives but which one is safer when it comes to data rescue if, for instance, the drive is failing? From my understandings on SSD drive ...
-1
votes
1answer
189 views

Recover overwritten files [closed]

I found some info to help me recover an overwritten file. It was overwritten by using rsync in the wrong direction after making a bunch of changes. Following the info I found, I type this to see a lot ...
1
vote
3answers
201 views

HP P410 RAID 0 - Added 2nd Drive Then Deleted 2nd Drive before 1% - Array Broken - Recovery options?

I made a mistake and I wanted to ask some others for best recovery options. Boot drive in home server was a single drive RAID 0 connected to a HP Smart Array P410 controller. I was attempting to ...
0
votes
1answer
73 views

Decode & restore files from /dev/md3 (Hacked server) [duplicate]

My not exposed MongoDB has hacked to ransom, my files stored on /home/mongo/store has deleted, i use foremost, ext4magic , extundelete , nothing is happening , backups on the same server are deleted ...
2
votes
0answers
2k views

FreeNAS - Imported old ZFS volume - but multiple datasets missing?

I have a FreeNAS server setup at my parents place. It was previously running FreeNAS Coral. This had a single ZFS volume called 'datastore'. It's a RAIDZ-1 volume, comprised of 4 x Toshiba 5TB disks. ...
10
votes
1answer
695 views

Getting files out of XFS with 64kb block size

I've been on a mission to recover files from one of my 2 perfectly working, non-corrupted, non-encrypted NAS drives that used to be in RAID 1. The NAS was Patriot Javelin S4, which (as I found from my ...