Server Fault Stack Exchange
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Questions tagged [corruption]

215 questions
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md5sum of large files gives different results sometimes

I have an AMD quad core, 8 gb RAM, 1 SSD EXT2 (2 months old), 2 HDD EXT4, approximately 1 year old. I'm using Ubuntu 10.04 x86-64 and when I compute the md5sum of large files (9 GB) sometimes I get different values than the one stored on a reference…
Emanuele
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file corruption on read/write 2.6.32-22-server (happens across many kernels)

I'm having an issue where after the server has been up for a period of time (~week/few days) the server will start reading corrupt data. For instance when I run a sha1sum of a file after a fresh boot it remains the same. However after a while I will…
Jonathan
5
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7 answers

Safe File System for Power Failure?

Has a file system been developed that is completely safe from power failure based corruption? If we assume critical data is being stored without a UPS and performance is irrelevant, does file system exist that is completely incorruptible from a…
Nicholas
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2 answers

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 the scale of the risk. I'm looking to build a…
Cyanara
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3 answers

ZFS-HA pool faulted with metadata corruption

I setup the ZFS-HA following the excellent description Github (see here). After extensive testing, I rolled the setup out to production using 5x12 disks in RAIDZ3 connected to two nodes using HBA Controllers. This ran quite smooth until last night…
Michael
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5 answers

NTFS file or directory is corrupted or unreadable

Anyone know of a way to delete files from an NTFS filesystem when you get "the file or directory is corrupted or unreadable". This isn't a file which is in use, I think it is genuinely corrupted, and I can't seem to get rid of it. BTW suggestions…
Ole Eichhorn
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0 answers

Corrupt WiredTiger MongoDB files

I'm running MongoDB with the WiredTiger engine on an ext4 file system. The last thing that I did was start building an index, but then something came up and I needed to cancel the index build and restart the machine. I did this by hitting Ctrl+C in…
Hut8
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1 answer

Server with multiple replicate=do-db entries

I have a server that someone has setup which are acting as a master-master on both servers. Since they have been configured as both master on the same database, changes in one end has caused all sorts of issues on the other. On one of the master is…
supmethods
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1 answer

MFT corruption on non boot drive. What could happen?

I have a server that is reporting some error messages related to NTFS corruption. It reports that there is possible corruption within d:\$mft However I have not come across any corruption, or unreadable files etc. My question is, how is the $mft…
MFT_Whatarethee
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How can I track down the cause of ext3 filesystem corruption?

We have a VMware vSphere 5 environment running CentOS 5.8 virtual machines. In the past two weeks we have had five incidents of virtual machines having a filesytem become corrupt, requiring an fsck to repair. Here is what we see in the logs: Nov 14…
Jon Buys
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Detecting data corruption so we're not backing up corrupt files

I've been thinking about data integrity, I currently backup about 2tb of data and always have one backup of data from a year ago. My concern is if a file became corrupt on our production file server no one would notice because some files aren't…
Sean Bannister
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6 answers

Should I stop MySQL repair?

MySQL database (20 Gigabytes of tables and index) went corrupt. I launched the repair option using MySQL-admin graphic interface, now it has been running for 24 hours. When I have check the MyISAM options (buffers, threads, etc.) I realized that…
unknown (google)
4
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2 answers

Can't access NTFS file after BSOD. Corruption undetectable by chkdsk?

We have several files on a Windows server that show up in directory listings but can't be accessed. I can take ownership of the files, and the ACL shows that Everyone has read/write/execute access; but I can't open the files. chkdsk finds no…
Richard Beier
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CentOS 5.6 unexpected inconsistency how to repair?

This morning I found that my server was not responding and wasn't able to connect to it in anyway to do a safe reboot. I had to do pull the plug to reboot. Upon rebooting everything appeared to be normal up till booting CentOS. Below is a screenshot…
Scott
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3 answers

gunzip: invalid compressed data--format violated

Problem definition: I transferred a tar.gz file from a Linux machine to a Windows partition.The Windows partition has mounted with the Linux server as cifs. OS : Red Hat Enterprise Linux Server release 5 Symptom: After the copy process is…
Arunjith
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