×

Announcing: Slashdot Deals - Explore geek apps, games, gadgets and more. (what is this?)

Thank you!

We are sorry to see you leave - Beta is different and we value the time you took to try it out. Before you decide to go, please take a look at some value-adds for Beta and learn more about it. Thank you for reading Slashdot, and for making the site better!

Comments

top

Is LTO Tape On Its Way Out?

ls671 Re: I would buy... (184 comments)

LTO6 is $40/6TB compressed.
4TB hdd is $130.
2TB hdd is $80.

The numbers match what you would like to see.

I don't follow your post.

Given the post you replied to, you must mean:
LTO6 is â40/6TB compressed.
4TB hdd is â130.
2TB hdd is â80.

8 hours ago
top

Is LTO Tape On Its Way Out?

ls671 Re:Shyeah, right. (184 comments)

Well, we have backups in Canada, Australia and England so we do not qualify with regards to the requirements because we do not have backups in any state.

9 hours ago
top

Critical XSS Flaws Patched In WordPress and Popular Plug-In

ls671 Re:Regular expressions (40 comments)

Running wp without at least a WAF in front of it, what could possibly go wrong?

4 days ago
top

Carmakers Promise Not To Abuse Drivers' Privacy

ls671 Re:wow (98 comments)

yes brother, I am all with you!

I am a drummer too.

about two weeks ago
top

Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

ls671 Re: Uncorrected reads (142 comments)

more so when an update rolls around and potentially throws a wrinkle in the mix.

You are right about this. Once, a linux kernel update, or was it mdtools? was screwed. You would add a new partition to an linux MD raid array and it wouldn't sync the partition before putting it online ;-) This is where a good backup strategy comes into place.

Anyways, toying around with linux MD and cheap solutions makes you more creative in the long run IMHO.

Just keep your mind open please. There are plenty of approaches and trade-offs available and just as you said:

Run the cost/risk aassessment and apply accordingly.

Furthermore, it depends on SLAs and such and having the best cost effective solution. As long as you know what you are doing and document it, you don't have to worry about covering your arse so much...

about two weeks ago
top

Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

ls671 Re: Uncorrected reads (142 comments)

Who says I don't ALSO work for others and I don't know about more expensive solutions? I just don't brag about it mister Shaman ;-)

I know enough to know about people covering their arses, it is pretty common you know...

Yet, I never lost any data on the cheaper setup I run on the side.

Take care man!

about two weeks ago
top

Ask Slashdot: How To Unblock Email From My Comcast-Hosted Server?

ls671 I have had emails rejected by hotmail (405 comments)

Hello,

I am in a data center and I had email rejected by hotmail for no reasons (not on any rbl blacklist etc.). I solved it by masquerading outgoing mail for hotmail on another IP on a different subnet I own on my datacenter connection. I would try this first. You can also try to contact hotmail so they whitelist your IPs.

If your 5 IPs are on the same subnet and blacklisted by hotmail, I don't see any other solutions than routing your mail through an intermediate mail server. Have you tried relaying it through comcast MX? I can't imagine hotmail rejecting emails from all comcast subscribers.

Also, you probably have somebody sending spam on the same subnet as yours and hotmail seem to like to block /24 subnets. They should eventually unblock you if your subnet stop sending spam.

about two weeks ago
top

Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

ls671 Re: Uncorrected reads (142 comments)

Run the cost/risk aassessment and apply accordingly.

Exactly, use ZFS that does just that if you want to afford the extra memory. Use a fancy hardware raid controller that does that if you wish. I just use cheap drives and Linux MD. Do your research before commenting on setup you don't seem to know about. You don't have to brag about your hardware here and try to convince others to do as you do.

Didn't I mention in my first post: "Most people would say this is crazy but in my opinion,..."?

I do not see what was your point in replying to my posts anyway other than brag about using more expensive solutions and treat others that don't do just like you like idiots.

Oh, and while at it, RAID 1 doesn't have parity information!

If you're running RAID 1, 5, 6, 10, etc, it's a moot point as data will be rebuilt from remaining parity information.

I did not learn a single thing from your replies.

Take care nevertheless!

about two weeks ago
top

Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

ls671 Re:Uncorrected reads (142 comments)

Good one! mke2fs -c -c

Thanks for pointing this out!

about two weeks ago
top

Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

ls671 Re:Uncorrected reads (142 comments)

I suggest you do a little more research. If a sector was successfully written to and then 2 months later the drive hardware can't read from it, there is no way for the drive hardware to automagically correct the error and recover the data. The drive hardware then just increment the Current_Pending_Sector count. You could start by reading your own link but then again, you seem to have problems reading my own posts so your mileage may vary ;-)

about two weeks ago
top

Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

ls671 Re:Uncorrected reads (142 comments)

I know that. I run e2fsck -c -c (write+read test) to generate random pattern writes on the drives then read the data to make sure it is the same. If I put the drive back on line, e2fsck -c -c will always report 0 bad blocks and no timeouts will have occurred. I also check for timeouts in the logs.

Failed reads on a drive part of a RAID array will usually cause the drive to be kicked out of the RAID array after a timeout slowing down the machine. The strategy I suggested allow the drive hardware to indeed relocate the bad blocks and to bring Current_Pending_Sector to zero.

So, more or less:
1) Drive gets kicked out of the array.
2) Look for read timeouts in the logs
3) Use what I described until read timeouts vanish.
4) Keep an eye on smart data and further read timeouts to insure the drive has stabilized. I actually use cron scripts for that.

about two weeks ago
top

Data Center Study Reveals Top 5 SMART Stats That Correlate To Drive Failures

ls671 Re:Uncorrected reads (142 comments)

I have had drives fail. I took them off line and wrote 0 and 1 to them with dd until Reallocated_Sector_Ct stops raising and Current_Pending_Sector goes to zero then ran e2fsck -c -c on them 2 or 3 times then, I put them back on line!!!

Most people would say this is crazy but in my opinion, the surface of the drives often have bad spots while the rest is perfectly OK. Some on those drives are still on line without reporting any new errors after more than 5 years, some almost 10 years. Those are server drives with very low Start_Stop_Count, Power_Cycle_Count and Power-Off_Retract_Count. All lower than 250 after 10 years. Those drives are spinning all the time.

Newer drives will relocate bad sectors to free reserved space they keep for that purpose. As long as you don't run out of free spare space, IMHO, it is worth a try.
 

about two weeks ago
top

US Weather System and Satellite Network Hacked

ls671 Well at least... (76 comments)

Well at least no plane crashed because it flew into an undetected storm...

about two weeks ago
top

Website Peeps Into 73,000 Unsecured Security Cameras Via Default Passwords

ls671 Re:Ethics (321 comments)

That's exactly what I suggested in my post and that's why I always disable that. Doesn't it sound like a security risk? Duh..

about three weeks ago
top

Website Peeps Into 73,000 Unsecured Security Cameras Via Default Passwords

ls671 Re:Ethics (321 comments)

They aren't really doors you know. They are cameras hooked on the Internet I assume.

Now, to be easily accessible with default credentials, wouldn't they have to have a public IP address with an open port?

Otherwise, I wonder how those guys got behind so many routers. Plug and play that requires a specific port on the router public IP?

I have a hard time imagining that all those cameras would have their own dedicated public IP.

about three weeks ago
top

Home Depot Says Hackers Grabbed 53 Million Email Addresses

ls671 Re:I would never give Home Depot my address... (99 comments)

It depends how fast you throw them away. My slashdot throw away address has been valid for 10 years at least. Still, I can throw it away without impacting anything else if I want and yes all addresses end up in the same inbox and I can edit the sender in my email client to enter anything I want.

Despite all that, I rarely provide an email address and surely not to home depot.

about three weeks ago
top

Home Depot Says Hackers Grabbed 53 Million Email Addresses

ls671 Re:I would never give Home Depot my address... (99 comments)

I just say I don't have an email address. I do use throw away email addresses when really needed to register to on line sites. Even my bank doesn't have my email address.

Profession: IT consultant
Your email: I don't have one!

Hehe...

about three weeks ago

Submissions

top

Interesting review on global warming

ls671 ls671 writes  |  more than 4 years ago

ls671 (1122017) writes "I am currently listening to an interesting video presentation on global warming by Warren Meyer. You can get the torrent from Mininova at:

http://www.mininova.org/search/?search=Catastrophe+Denied&cat=0

Please note that Mininova only offers legit torrents since a while now, so no piracy involved in downloading it ;-)

Although the guy would be categorized as a "skeptic", he doesn't deny the temperature is rising so he doesn't sound to "extreme" in presenting his point; he seems to be mostly reviewing the evidence provided by what he calls the "climate alarmists". He seems to be doing a pretty good job at it and he seems to be using a rather scientific approach.

Anyway, have a look at it if you are interested on this topic. Also, this seems to be fresh (late 2009, early 2010) ;-)"

Link to Original Source
top

Boy Floats Away In flying saucer looking Balloon

ls671 ls671 writes  |  more than 5 years ago

ls671 (1122017) writes "FORT COLLINS, Colo. — A 6-year-old boy is floating over northeastern Colorado in a homebuilt balloon and authorities are racing to try and rescue him.

The balloon, in the shape of a flying saucer is covered in foil and filled with helium. It has a compartment for a passenger underneath. It lifted the boy into the air near Fort Collins Thursday morning after the balloon became untethered at the boy's home.

http://www.thedenverchannel.com/news/21306839/detail.html"
top

EtherApe to monitor your network traffic

ls671 ls671 writes  |  more than 7 years ago

ls671 (1122017) writes "I like to monitor our systems with tail -f on the various log files and going back into them if needed to understand what happened but this tool is just too cool. I now keep it running on my desktop reserved exclusively to the tail -f of the log files side by side with the xterms. Read More Here"
top

Stratum 1 ntp server myth

ls671 ls671 writes  |  more than 7 years ago

ls671 (1122017) writes "There is a myth that prevails in the ntp community; it is better to connect to low stratum (e.g. stratum 1) servers in order to get more precise time. This is false quite often. It is explained here along with examples of poorly configured ntp servers."
top

Linus on debugger

ls671 ls671 writes  |  more than 7 years ago

ls671 (1122017) writes "A few months ago, I wrote in Slashdot that I do not use debuggers, except to reverse engineer code. CryBaby then started to pick on me telling me I was stupid and too lazy to learn how to use one. I felt all alone in the world since I do not know many people that share my views on this subject ;-) I searched for opinions and I was glad to find that Linus shares my views. Is there only Linus, 3 other guys that I know and myself thinking this way or there are more people agreeing in the /. crowd ? Read details here"
Link to Original Source
top

Apache reverse-proxy to secure your infrastructure

ls671 ls671 writes  |  more than 7 years ago

ls671 (1122017) writes "This article explains how to set up a secure and efficient environment. Logically, it is comparable to the setups used in large corporations like banks, governments, military, insurance companies etc. We will do this using a single computer with 4GB RAM, apache mod_proxy in reverse proxy mode and the freely available vmware-server. Read the article Here"
Link to Original Source
top

Fooling around with deep cycle batteries and UPS?

ls671 ls671 writes  |  more than 7 years ago

ls671 writes "I have been experimenting with deep cycles batteries connected directly to APC UPSes for a while and I have grown tired of fooling around with battery chargers (since UPSes can't handle recharging a deep cycle battery). I was looking at a cost of approximately 5000$ to implement a robust solution and I finally came up with a solution that only required to invest 1000$ more than I had already done. You can view the results here."

Journals

ls671 has no journal entries.

Slashdot Login

Need an Account?

Forgot your password?