Questions tagged [data-recovery]
Reclamation of deleted or otherwise removed/corrupted data (files)
401
questions
1
vote
0answers
7 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 ...
2
votes
1answer
54 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 ...
0
votes
1answer
19 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
votes
0answers
45 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 ...
0
votes
0answers
49 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 ...
0
votes
0answers
229 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 ...
1
vote
1answer
135 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 ...
2
votes
0answers
89 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 ...
1
vote
2answers
122 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,...
2
votes
1answer
25 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 ...
0
votes
0answers
172 views
Cloning disk with GPT using ddrescue
I am trying to save data from my failing external USB-HDD (Maxtor M3 Portable) to another USB-HDD (Western Digital).
(The original drive does not support SMART.)
The disk uses GPT and has one ...
0
votes
1answer
48 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 ...
0
votes
0answers
24 views
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 ...
0
votes
1answer
132 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
1answer
118 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 ...
0
votes
0answers
21 views
How can I make a low-level image an NVMe drive?
I have an Intel NVMe (U.2) drive attached to my computer.
TL;DR:
How can I create a low-level image of an NVMe SSD (an Intel SSD 750) that includes all data on the drive, including the contents of ...
0
votes
0answers
57 views
Save data from a corrupted file system with SCP
An instance I manage recently experienced file system block errors and passed in Read Only mode. Before any attempt to fix it, I wanted to save one specific docker volume.
scp -r -v user@some_domain:...
0
votes
0answers
22 views
Procedure to obtain data from transferred centos-6 kvm guest image on two logical volumes
Original question:
I am trying to recover data from a kvm guest image transferred from a defunct centos-6 host: I have recovered one guest without difficulty. The second one will not start. The ...
1
vote
1answer
199 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 ...
0
votes
0answers
77 views
Recover data from destroyed ZFS filesystem
I have a 1TB filesystem in a Proxmox environment, that was unluckily destroyed by Proxmox while trying to restore a container. Can the filesystem be recovered, or at least part of the data stored in ...
5
votes
1answer
62 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 ...
4
votes
1answer
123 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,...
2
votes
1answer
99 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/...
0
votes
1answer
39 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 -...
-2
votes
1answer
73 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 ...
3
votes
1answer
997 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 ...
1
vote
0answers
2k 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 ...
9
votes
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
votes
1answer
265 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 ...
1
vote
0answers
201 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
303 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
78 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
47 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
363 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
436 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
41 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
7k 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
174 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
232 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
174 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
220 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?
2
votes
1answer
1k 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
55 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
47 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
783 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
79 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
774 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 ...
2
votes
1answer
2k 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
81 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
97 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 ...
