Questions tagged [data-loss]
The data-loss tag has no usage guidance.
36
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I lost my AWS EBS volume completely. What are the odds of that?
I recently lost my EBS volume, leaving the data unrecoverable. I already knew that AWS isn't exactly concerned about the convenience of their customers and thus the risk of this happening was pretty ...
- 3
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0
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151
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Computing stripe count for erasure coded storage
I'm setting up a ceph cluster (first time for me) which in the end will be made of ~100 disks spread over 10 hosts. I'm going with a single erasure coded data pool to maximize disk space; my ...
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1
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1
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326
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GKE cluster looses data
I am new to GCP so pardon the ignorance.
I have a 3 node GKE cluster that is running a database application. Each node has a 100GB standard persistent disk allocated. However, I find every so often (...
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2
answers
534
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Monitor Linux Server filesystem health and suspicious activities
I run my own, small server here. The server runs on Ubuntu 18.04. There is one single HDD using LVM on a partition together with EXT4. LVM is used for taking snapshots. I also use Webmin with ...
- 101
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0
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468
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Next step when DBCC CHECKDB REPAIR_ALLOW_DATA_LOSS failes
I'm in a situation where a few Tables of a Database (MSSQL2016 - 13.0.5081.1)
are corrupted (selecting data failes at some point)
There is no valid backup available (the error seems to be present in ...
- 111
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2
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145
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Huge data loss in RAID 1 array [closed]
I've recently faced a huge data loss (everything from last 5 months) after one of my disk crashed, even if the RAID array is still fine.
This disk was a SSD with my root partition (ext4), mirrored in ...
- 15
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3
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521
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Accidentally delete /usr/share/* what is the right solution to backup data?
How ?
When trying to create a chrooted environment for some users, I end up using
mount --rebind <path> <newPath>
In order to allow chrooted users to access some useful command (a bad ...
- 130
4
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2
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2k
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What scale of data loss or corruption do I risk if I enable the write buffer on a file server?
I have found plenty of articles online warning of risk of data loss or corruption for drives with write-buffer enabled in the event of power loss. However, I haven't found any that actually refer to ...
- 123
5
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2
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3k
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Cassandra snapshot restoring : random missing data
I'm having a hard time restoring snapshot on Apache Cassandra (version 3.0.9). As far as I can say, I'm following the procedure described on datastax blog, along with several other ones (for instance :...
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2
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ZFS :: bitrot (in checksum)
As far as I know, zfs uses checksums to protect against data loss caused by bitrot.
But what happens if a bitrot affects the data of the checksum. Then, does zfs think the data is corrupt or think ...
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3
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Update Postgres on Production Server without downtime
I have a production server running Postgres 9.4. The database is > 10 GB. Is it possible to upgrade to Postgres 9.5 without downtime and without loosing data?
Upgrade tutorials recommend to stop ...
- 439
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0
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52
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Server reverted to may after reboot
I just had a problem on a client's server, it wasn't responding to anything so I forced a reboot.
The client called shortly after to say the website reverted to a version from May. Checked the backups ...
- 397
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1
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110
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The Backup Paradox [closed]
I have been thinking about how large companies backup their data. I imagine that in some critical enterprises they must consider every possibility and can't afford to lose even one bit of data. Of ...
- 103
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1
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Data Loss after Server Reboot [duplicate]
I have server on 2 ssd disks connected by Raid 1
Today I got 500 internal error on opening website. I have requested server management to reboot the computer.
After reboot to my surprise all my ...
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0
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1
answer
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fsck ext4 inode error
Today while I was booting I got an error in an ext4 partition with some inodes. I just entered the root password and run fsck manually but I am a bit worried. fsck warned many times about some errors ...
- 105
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0
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304
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LVM - after server reboot data changes of last 6 month lost
I have a server setup with a Proxmox VE on LVM groups. Today I could not kill some processes, so I decided to reboot the server. This did not work eighter so I had to press the reset button. After the ...
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1
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55
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Entire folders deleted from My Documents periodically with remote logins
I've got a customer who thinks our application is constantly deleting all it's data. It's really becoming a major problem for them.
The problem is, there's no way it's us. They are losing not only ...
- 463
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2
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1k
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Appropriate network monitoring tool(s) for logging hiccups [closed]
I have a customer who has problems with our software crashing from time to time. Unfortunately, if you unplug the network cable in the middle of a transaction our software will crash every time and ...
- 403
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3
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230
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Server not responding, after reset, all data rolled few months back
A Debian Server stopped responding earlier today. After hardware reset, the data on server was rolled back several months ago to the state it was in february. How is this possible?Everything, logs, ...
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1
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62
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How to track down data loss at /home?
On a Linux server, there seems to be loss of data at users homes. Where can we find information about the possible loss of data? How to proceed to change the defective Disk (supposing that the ...
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4
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2
answers
901
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Save data after accidental dd format
as embarrassing as it sounds I managed to dd a debian iso to an external hd instead of my usb pen drive.
now my 1.5 tb western digital has 1 700mb partition named debian and the rest is unallocated ...
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2
votes
2
answers
752
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Server hang - data loss on reboot, post mortem analysis
A development server I'm responsible for (ext3 on raid 5 w/Debian Squeeze) froze up over the weekend and I was forced to reset it, as in unresponsive from KVM/physical keyboard access, no eth devices ...
- 4,716
0
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2
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2k
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From Raid-1 to Raid-5
I want to upgrade from Raid-1 to Raid-5 but don't want loss of data. It seems that the way to do it is some 3rd party programs. Can you recommend me some applications or another way to do that?
HP ...
- 137
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2
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165
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Data integrity after RAID5 crash
After a hard drive died on a RAID5 setup on a legacy system, the Vmware Virtual Machine on it kept on running for a period of 6 months. Needless to say, finally it crashed bad. Now, the dead hard ...
- 160
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1
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867
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How to investigate frequent but dissimilar data-loss events
I have a Xen domU provided by a third party, running Ubuntu (10.04, server edition, stock -server kernel). This server runs Dovecot and Exim4, with mail stored in Maildirs, and runs a fairly typical ...
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5
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LVM vs RAID0 vs RAID "linear" - Combine 2 disks as one, data recovery?
given two 2TB USB external disks that have to be combined to one 4TB volume and formatted with one big Filesystem (XFS), I have a small question to ask.
Does LVM provide better Data recovery, should ...
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1
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2
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975
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Periodic Mysql Data loss
Almost once in 2 weeks,i am facing mysql data loss in a table. almost 600 rows are being deleted. I cant trace that issue.
What may cause this or how can i trace who/what makes it ?
Thanks
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3
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1
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364
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Is there a risk of data loss on RAID1 when RAID controller stops working?
I heard that using RAID5 or RAID6 can be problematic: if RAID controller stops working, there is too much pain to recover the data when you do not have another controller of the same type.
Now, is it ...
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2
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mysql data loss after server crash
After the server restarted due to a power cut, we lost all data saved in the database during the morning (client records created in the website). A few minutes before the crash, I was able to see such ...
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mysql Data loss after server restart [duplicate]
Possible Duplicate:
mysql data loss after server crash
After the server restarted due to a power cut, we lost all data saved in the database during the morning (client records created in the ...
- 195
0
votes
1
answer
109
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server 2003 data loss?
I have a server with server 2003 R2 that has shown signs of possible data loss. System event logs are missing a four month time chunk. Before today the last day in the logs is 2/12/2010 then it jumps ...
Mike D
5
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3
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2 drives "failed" on a 3 drive RAID 5
But I don't believe it.
The machine is a Dell PowerEdge 2600 server running Windows Server 2008 trial 32bit (yah, its not supposed to...but it works! [well, it used to]).
For the sake of confusion: ...
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2
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203
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EXT3: What disk checks should be run after a hard reboot or power failure?
In the event that a hard reboot is performed or a system loses power without a proper shutdown, what checks should be run to verify file-system/data integrity on ext3 partitions?
I've heard of fsck, ...
- 4,521
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6
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4k
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Ping packets being lost in an odd way
I have 2 servers on the same switch. I'm losing 5% of packets on ~16k pings between the two.
Below is my nasty ASCII diagram of the configuration of the network, all machines have a single interface....
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3
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Data loss due to MySQL DRBD Heartbeat failover script
Using DRBD version: 8.2.6 (api:88/proto:86-88)
Here is the contents of /etc/ha.d/haresources
db1 192.168.100.200/24/eth0 drbddisk::mysql Filesystem::/dev/drbd0::/drbd::ext3::defaults mysql
...
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4
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528
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Last time SQL Server downtime or data-loss occured, what happened? [closed]
This isn't a question about how to cope with or limit downtime or data-loss, I know all about that. I'm putting together a 'stories' section for my PASS post-con on disaster recovery and I'd like to ...
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