Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [data-recovery]

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

Reclamation of deleted or otherwise removed/corrupted data (files). The level of complexity of such a task varies from simply "Restoring" a file (from a Recycle Bin) to using advanced tools to analyze the filesystem and rebuild previously deleted/corrupted data.

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Getting data out of a non-working SATA drive

Can anything be done to get data out of a dead SATA drive, the drive won't even show up on the list of drives when booting the computer? UPDATE: The drive was never backed-up. It was an external home-grade MyBook used at an SMB as "storage". After…
Osama ALASSIRY
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I overwrote a large file with a blank one on a linux server. Can I recover the existing file?

I came back to my machine, tried saving a file over ssh onto my linux server (CentOS). It failed. I wasn't interested in keeping any changes I had made so I closed my editor and reopened the file (over ssh). The save attempt wiped the file. I have…
wkstar
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Bad sectors, S.M.A.R.T., SpinRite, firmware on platter and drive id questions

Is it possible for S.M.A.R.T. to give false readings (say I was fiddling with lots of recovery programs, transfers, so on and so forth) or is it absolutely a read-only direct correlation to the physical status of a drive? Does SpinRite level 5…
Christopher Galpin
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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 are separate). My OS is OpenSuse thumbleweed. I…
hadi.mansouri
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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 our loss is probably simple and may be…
Peter Jirak Eldritch
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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 autoreplaced, even though that option was set for this…
Dirk
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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 native RAM-throughput using this technique. So I…
Nils
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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. For some reason, that installation seems to have…
victorhooi
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Open files inside Windows Recycle Bin

I've done lots of research on trying to recover files from another user's recycle bin (Windows 10). They can just log in themselves, but I wanted to work on their ticket while they're out of office. So far, I have figured out their user SID and…
Jackson Taylor
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Data scrubbing and repairing a RAID1 mirror?

In Linux, if I have a software RAID1 mirror /dev/md1 with N ≥ 1 active devices, what are the semantics of the repair command? echo "repair" >/sys/block/md1/md/sync_action Am I correct to assume that in case of 1 active device, the repair command…
jotik
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old tape backup using xfsrestore

I have some old tapes that were backups to servers from an old irix machine. I need to get the data off of them and I know they were written to the tapes via 'xfsdump'. I'm running ubuntu 14.04 server. Say I try to restore to a file like: sudo…
A.Martinez
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Can I extract a private key out of Tomcat's memory?

I'm running Tomcat 6. I was messing around with my keystore in order to try to fix some certificate chain problems, and I accidentally rm'd the production version instead of the .new file I was working with. Now, Tomcat is still running and still…
strugee
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recover data from zfs pool on napp-it openIndiana

I just inherited a desktop PC with napp-it free (openIndiana), it was set up to work as a sort of NAS, it had two disks on 2TB and one 3TB without any redundancy, one of the drives failed and the pool is now offline. I'm pretty new to ZFS and tried…
MarkovskI
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Best practices to backup mysql databases

This question concerns best practices for mysql backup with replication and large number of databases. I'm looking for your point of view and suggestions :) I - Current situation I have two databases master/slave (mysql replication) on each one of…
maxime_039
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How to synchronize downloaded emails from clients back to the IMAP server

I have an iRedMail server running (postfix + dovecot as an IMAP server) on a Debian Xen guest machine. By a mistake the iscsi disk, where users emails are stored, was deleted. There is another copy of this disk from December 30th 2014. There is a…
conqueror
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