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Nov
7
awarded  Famous Question
Nov
5
awarded  Citizen Patrol
Aug
11
accepted Single-bit error on RAID device?
Aug
11
comment Single-bit error on RAID device?
Your original comment suggested the possible involvement of cache and poweroff reboot, after which the file was no longer corrupt. Therefore the problem was never on the disk copy of the data, only in a cache, maybe on the RAID controller, but I can't rule out an error in main memory either since a file block could stay cached for quite a while given that I have 12GB memory on this system. Thanks for pointing me in the right direction. I guess it's time to run memtest overnight :-)
Aug
11
comment Single-bit error on RAID device?
@JasonC You are correct. After a full power-off reboot the file is no longer corrupt, so the problem has to be in either the disk or RAID controller cache. It appears the file on disk is just fine. If you post this as an answer I'll accept it.
Aug
11
comment Single-bit error on RAID device?
@JasonC Hmmm.... that sounds like it might actually be possible. I still have both copies so I will try a full poweroff reboot to make sure the disk and RAID controller cache are cleared.
Aug
11
awarded  Editor
Aug
11
comment Single-bit error on RAID device?
I've improved my original description. Remember that the error occurred on the disk at some point after the good backup was taken. A RAM error wouldn't fit with my actual scenario.
Aug
11
revised Single-bit error on RAID device?
Improved explanation
Aug
10
asked Single-bit error on RAID device?
Jul
24
comment xargs + pv = messed up terminal
Good question but off-topic for SO; belongs on Super User
May
16
awarded  Yearling
May
9
awarded  Nice Answer
May
9
answered Hazardous materials in a hard drive
Feb
12
comment post-order for find -exec?
Off-topic for SO; belongs on Super User
Jan
15
comment Moving endpoint of freeform curve
It works with either the arc or freeform tool, aka the spline or bezier tool.
Jan
15
awarded  Yearling
Jan
13
answered Moving endpoint of freeform curve
Jul
26
comment How can I find out where an email really came from?
Or, you can paste the headers into SpamCop and let it do all the deciphering for you. They'll even send a SPAM notice to the responsible sysadmin(s) if you wish.
Jun
17
comment cannot create directory. permission denied. but i have permission
Do you have selinux enabled?