Adobe didn't send the takedown notice, their IP lawyers did. Of course, you do realize that more sites to issue takedowns = more money for their lawyers, right? Think there might be a slight conflict of interest going on here?
Not true, they have no right to dictate that at all. At least, for anything except digital. You can't say "If I sell you this book you can never resell it.". First Sale doctrine lays the smack down on that attempt. It's not legally enforcable to put a notice on the cover of the book saying "You must destroy this as soon as you finish reading it.". You can put it on the cover all day long, but if I bought it and didn't destroy it, there's not a damned thing you could do.
_ALL_ digital usage licenses are based on the ridiculous claim that using digital media is creating a copy, thus their license falls under copyright law. There is no such thing as a useright, as much as the big media companies wish there were.
actually you're right, but legally you're wrong. The entire "licensing" house of cards rests on a ridiculous decision that usage of digital media requires "copying" it to temporary RAM. So, in the legal world, usage IS covered by copyright, and that really REALLY needs to change.
I can't stand binary device drivers - They're generally buggy as shit, feature-poor and bloated. There's a REASON nobody wants binary _DEVICE DRIVERS_ in the kernel proper. On the complete other side - if the kernel has ever _EVER_ exposed a userspace ABI it is set in stone forever. Period. To change the calling convention of a syscall or the output of a random/proc file is impossible - even if it's defective in some way. You have to rename it to syscall_old and create a new one on a new number, or try to compatibly extend the output of/proc.
There's very few parts of the kernel as visible from userspace that are expected to be mutable - most of them come from linked driver support. Tools to specifically operate one driver (device mapper, for instance) have to follow the ABI updates in the kernel. As that's considered "kernel tools" it's accepted, if somewhat distasteful. Routing? That's all stable ABI.
10 year old propriatry software from a defunct vender is required to still work on modern kernels - libraries are up to you.
Logoff doesn't work in windows either. All it's ever done on any platform is restart the client. They've got really shitty resource allocation issues, and it would cost them more effort to fix then it's worth. They just kill the process, let the OS reclaim all the resources, and start from scratch.
"logoff" is nothing but a way to trigger the "network connection lost" restart without popping up the "network connection lost" dialog box.
... So what you're saying is that I now HAVE to have flash to do a captcha, plus perfect eyesight, and fast reflexes to enter it before the timeout, and you're using DRM (known broken from the getgo) to try to make it difficult to spoof - except EVERYONE forgets the enemy of CAPCHA isn't better AI - it's third world labor.
CAPCHA is dead. Unfortunately, like most annoying internet fads we're going to see lots more of it until it finally starts going away.
Given that spammers are using botnets NOW, what exactly are you going to accomplish by requiring everyone to burn CPU cycles just to post a comment? There's 5-10 million zombies out there, on some pretty fast machines spread out over millions of unique IPs at any given time.
Please, don't suggest something stupid AND already obsolete, we might get saddled with it.
pretty much. It's outsourcing your captcha solving to impoverished third-world solvers. So really, there's nothing they can do to make Capchas better - humans ARE solving them, it's just an economic imbalance being exploited.
I use it because I'm sick of capchas everywhere and it's dirt cheap. I figure if we break them bad enough people will stop trying dumb technical solutions to social problems. (spam)
wow, not just badsummary, utterly worthless summary. Here's the relevant discussion from LKML. Yes, this is all of it.
Peter Zijstra
Andrew Morton In http://bugzilla.kernel.org/show_bug.cgi?id=12309 the reporters have identified what appears to be a sched-related performance regression. A fairly long-term one - post-2.6.18, perhaps.
Testcase code has been added today. Could someone please take a look sometime?
There appear to be two different bug reports in there. One about iowait, and one I'm not quite sure what it is about.
The second thing shows some numbers and a test case, but I fail to see what the problem is with it.
This somewhat deflates the excitement evident in the OP. I mean, I know what he's talking about, these apparently random 1-2 second FREEZES while working, but if the guys in LKML arn't talking about it it's probably not being really worked on.
seriously - has anyone successfully recovered from dd if=/dev/zero of=/dev/hda ? I hear about 'slight distortions in the magnetic field due to the previous orientation' but that's basically a bunch of bullshit. Modern drives are as sensitive as they can possibly be so they can cram as much data as possible into their tiny platters. There have been multiple challenges to recover data from that method, and so far none have had any takers.
It will "probably" work. Which means no, it will NOT work when your database has shit itself. Murphy's law dictates that you do not want to rely on the database unclean shutdown recovery as part of your backup solution.
Short answer: no. Long answer: filesystem level "things" don't know about database "things" so there may be "things" at the database level that lead to a non-functional database when coped with at the filesystem level.
actually yes, you can do just that - tell the database that the filesystem level 'thing' needs to get a coherent snapshot of the database level 'thing'
Two very common ways to backup huge datasets: 1) Cluster mode, pull one server out of the cluster, quiesce it, and back it up (tenerally with DB aware tools). Once the backup is complete, have it reconnect to the cluster and it will resynchronize.
2) Mirrored NAS. Quiesce the database, break the mirror, resume database on one half of the NAS, backup the disk image on the other half. When done, resynchronize NAS for the next day.
This assumption is valid not only when talking about filesystems and databases but on every two unrelated items. Learn this and you probably know half you need to be a proper IT professional.
And the other half is knowing when you CAN do things like this, and how.
Well if I had an auto-start generator I'd use an ATS on it. Really no point in paying the extra when I have to do everything else myself. I do intend to switch from a manual setup to fully automatic one of these years, but probably not until I go to a new house.
Linemen assume every line is live. That's why they're not dead yet. What frequently will happen though is they will yank your meter (severing you from the grid entirely) and you'll have to beg them to connect you back well after your neighbors have power again. It's still illegal, stupid, and dangerous. And yes, I'm posting that a lot in this thread - I don't want anyone to get killed.
... the utility is supplying no voltage, but that's no reason for you to power their lines for them! Never EVER EVER operate a generator in a manner that feeds into the grid. You could kill someone, yourself included. If there's a downed powerline due to a tree, the grid will probably have blown their 2000a fuse and it will be dead - but you'll be backfeeding the otherside with whatever power your generator can put out. Not a good idea at all.
Also, you'll be attempting to power your neighborhood that's also severed from the grid.
Just don't do it. Get a transfer switch, don't use a ghetto male->male extension cord for anything.
Indeed. A 200 amp manual transfer switch can be found for $400 online. This gives you the ability to have a male plug coming out of the transfer switch that can never be powered by the utility - if it's connected, the mains are disconnected.
They usually come in the form of a breaker box. Installation isn't trivial, but it's not exceptionally difficult. First, identify what circuits are "must have" during a blackout. This would be:
furnace blower, HVAC (in hot climates like florida)
food storage (fridge, freezer, deep freeze)
lighting
well pump if you don't have city water,
pipe heaters for those of you up north
food prep - electric ranges are probably too much load, but you may be able to run a small or midsize microwave. If you have a gas stove with electric controls, power it as well.
a few marked outlets specifically as on generator, so you can charge phones/run your laptop/listen to the radio/whatever.
Next, wire in your transfer switch to your main breaker box. Some go on their own 200amp breaker, others may be wired directly to the rails. TURN OFF YOUR MAIN BREAKER BEFORE WORKING ON YOUR SYSTEM. Read the manual to your transfer switch carefully, incorrect installation can be extremely dangerous.
Once the new subpanel is installed, you can move your protected circuits to it one-by-one. With mains power off, remove the breaker from your main panel, put it in the subpanel, and move the associated wires. Don't forget to replace the hole in your main panel with a blank, or you'll have a safety hazard. Once all the circuits are transferred, make a male plug for the AC input to the transfer switch that uses a heavy gauge connector (200a for a 200a switch). You may be able to skimp there as long as your extension cord is rated above the BREAKER on your generator. Not the rated power, but what it actually trips at.
With all that, a startup tip would be to power up the generator, turn OFF all the circuits in the subpanel, switch the input to the generator, and power them up one by one.
And please PLEASE check local code before trying this yourself. I have left things out that vary from state to state, and some other details that you have to know before trying something like this (what gauge wire to use between the main panel and your transfer switch, for instance). If you have a friend who is a LICENSED electrician you should definitely ask them to look over your plan, and inspect your final work before you use it.
Finally, not every locale allows owner-improvements to electrical systems, and you may have to use a licensed contractor.
The generator can produce 2500 watts, but I went with a 15-amp transfer switch because that's all I needed for the circuits I wanted to power. Since my generator isn't that large (20 amps max), a 15-amp switch was fine and I knew I wouldn't be able to power more than one, possibly two, circuits at once. No problem.
Never. Ever. _EVER_ do this. You never want any midpoint link in an electrical system rated lower then your source. This means for a 20a generator you want a 20a transfer switch, not a 15a. If your insurance company finds you did it anyway they WILL void your policy.
"Oh but all I'll ever plug into this outlet is a smoke detector, so I can just use this 22gauge speaker wire but I'll leave it hooked up to a 20a breaker because it's too much effort to change it out."
See how ridiculous that sounds? Don't be that guy. Remember that whenever doing amateur home improvement, if you don't know what you're doing GET SOMEONE WHO DOES TO HELP YOU.
Downloading isn't an infringing offense, despite what the RIAA/MPAA try to tell you. Copyright only covers distribution - if I have 100,000 ripped mp3s on my computer, that's legal (now a gray area). They have to prove she uploaded those tracks in order to have damages.
Of course, that's really REALLY difficult to do, so they've come up with the novel claim of "making available" being equivalent to distribution.
Yeah a debt-dodging temporary offshoot of a major monopoly puts out a badly-worded update regarding their email service - huge shocker. As anyone with more of a clue then a slashdot editor realized, this simply meant that the branded email services were being transferred from the myverzion to "myverizon except skinned myfairpoint" portal.
Here's my guess as to what's going to happen. Verizon spins off "Fairpoint", saddles it with shitloads of debt. After a short term (under 3 years) Fairpoint cites "Market factors outside our control" and goes bankrupt, discharging the debt. Verizon provides DIP financing, which gives them priority access to their assets, Fairpoint fails 6 months later and Verizon gets it all back, minus the debt. Presto!
Because the only way to solve anything is by killing someone, got it. Glad we've reduced our choices to "surrender" or "kill all the ragheads because some of them might not like us!"
You know what, I'm almost hoping we invade Iran and Pakistan. Because to do that, we'd have to re-implement the draft. Then see how popular "shoot first talk later" is as a strategy.
So what you're saying is the attack on the twin towers was completely justified if just one soldier was hiding in those buildings? Or if they thought there was?
Let me help you: "The truth is that those idiots should not be hiding in those towers, they should stay in their barracks. The reason they won't do that is they're complacent in our military superiority."
Seriously, I wish people would think through the things they say.
Slashdot Mirror
Adobe didn't send the takedown notice, their IP lawyers did. Of course, you do realize that more sites to issue takedowns = more money for their lawyers, right? Think there might be a slight conflict of interest going on here?
Not true, they have no right to dictate that at all. At least, for anything except digital. You can't say "If I sell you this book you can never resell it.". First Sale doctrine lays the smack down on that attempt. It's not legally enforcable to put a notice on the cover of the book saying "You must destroy this as soon as you finish reading it.". You can put it on the cover all day long, but if I bought it and didn't destroy it, there's not a damned thing you could do.
_ALL_ digital usage licenses are based on the ridiculous claim that using digital media is creating a copy, thus their license falls under copyright law. There is no such thing as a useright, as much as the big media companies wish there were.
actually you're right, but legally you're wrong. The entire "licensing" house of cards rests on a ridiculous decision that usage of digital media requires "copying" it to temporary RAM. So, in the legal world, usage IS covered by copyright, and that really REALLY needs to change.
I can't stand binary device drivers - They're generally buggy as shit, feature-poor and bloated. There's a REASON nobody wants binary _DEVICE DRIVERS_ in the kernel proper. On the complete other side - if the kernel has ever _EVER_ exposed a userspace ABI it is set in stone forever. Period. To change the calling convention of a syscall or the output of a random /proc file is impossible - even if it's defective in some way. You have to rename it to syscall_old and create a new one on a new number, or try to compatibly extend the output of /proc.
There's very few parts of the kernel as visible from userspace that are expected to be mutable - most of them come from linked driver support. Tools to specifically operate one driver (device mapper, for instance) have to follow the ABI updates in the kernel. As that's considered "kernel tools" it's accepted, if somewhat distasteful. Routing? That's all stable ABI.
10 year old propriatry software from a defunct vender is required to still work on modern kernels - libraries are up to you.
Logoff doesn't work in windows either. All it's ever done on any platform is restart the client. They've got really shitty resource allocation issues, and it would cost them more effort to fix then it's worth. They just kill the process, let the OS reclaim all the resources, and start from scratch.
"logoff" is nothing but a way to trigger the "network connection lost" restart without popping up the "network connection lost" dialog box.
http://www.youtube.com/watch?v=Nvwk4QncSG4 -- eve-files will melt under a slashdotting, it's been put on youtube. I should hope google can handle the load.
... So what you're saying is that I now HAVE to have flash to do a captcha, plus perfect eyesight, and fast reflexes to enter it before the timeout, and you're using DRM (known broken from the getgo) to try to make it difficult to spoof - except EVERYONE forgets the enemy of CAPCHA isn't better AI - it's third world labor.
CAPCHA is dead. Unfortunately, like most annoying internet fads we're going to see lots more of it until it finally starts going away.
Given that spammers are using botnets NOW, what exactly are you going to accomplish by requiring everyone to burn CPU cycles just to post a comment? There's 5-10 million zombies out there, on some pretty fast machines spread out over millions of unique IPs at any given time.
Please, don't suggest something stupid AND already obsolete, we might get saddled with it.
pretty much. It's outsourcing your captcha solving to impoverished third-world solvers. So really, there's nothing they can do to make Capchas better - humans ARE solving them, it's just an economic imbalance being exploited.
I use it because I'm sick of capchas everywhere and it's dirt cheap. I figure if we break them bad enough people will stop trying dumb technical solutions to social problems. (spam)
If you can reproduce it, do a git-bisect. You'll find the change that caused it pretty quickly.
wow, not just badsummary, utterly worthless summary. Here's the relevant discussion from LKML. Yes, this is all of it.
Peter Zijstra
Andrew Morton
In http://bugzilla.kernel.org/show_bug.cgi?id=12309 the reporters have
identified what appears to be a sched-related performance regression.
A fairly long-term one - post-2.6.18, perhaps.
Testcase code has been added today. Could someone please take a look
sometime?
There appear to be two different bug reports in there. One about iowait,
and one I'm not quite sure what it is about.
The second thing shows some numbers and a test case, but I fail to see
what the problem is with it.
This somewhat deflates the excitement evident in the OP. I mean, I know what he's talking about, these apparently random 1-2 second FREEZES while working, but if the guys in LKML arn't talking about it it's probably not being really worked on.
seriously - has anyone successfully recovered from dd if=/dev/zero of=/dev/hda ? I hear about 'slight distortions in the magnetic field due to the previous orientation' but that's basically a bunch of bullshit. Modern drives are as sensitive as they can possibly be so they can cram as much data as possible into their tiny platters. There have been multiple challenges to recover data from that method, and so far none have had any takers.
It will "probably" work. Which means no, it will NOT work when your database has shit itself. Murphy's law dictates that you do not want to rely on the database unclean shutdown recovery as part of your backup solution.
Quiesce, snapshot, resume does work however.
Short answer: no.
Long answer: filesystem level "things" don't know about database "things" so there may be "things" at the database level that lead to a non-functional database when coped with at the filesystem level.
actually yes, you can do just that - tell the database that the filesystem level 'thing' needs to get a coherent snapshot of the database level 'thing'
http://en.wikipedia.org/wiki/Quiesce
Two very common ways to backup huge datasets:
1) Cluster mode, pull one server out of the cluster, quiesce it, and back it up (tenerally with DB aware tools). Once the backup is complete, have it reconnect to the cluster and it will resynchronize.
2) Mirrored NAS. Quiesce the database, break the mirror, resume database on one half of the NAS, backup the disk image on the other half. When done, resynchronize NAS for the next day.
This assumption is valid not only when talking about filesystems and databases but on every two unrelated items. Learn this and you probably know half you need to be a proper IT professional.
And the other half is knowing when you CAN do things like this, and how.
Hey now, 4chan /b/ is funny sometimes.
Hang on, I'll get you an example.
nevermind.
Well if I had an auto-start generator I'd use an ATS on it. Really no point in paying the extra when I have to do everything else myself. I do intend to switch from a manual setup to fully automatic one of these years, but probably not until I go to a new house.
Linemen assume every line is live. That's why they're not dead yet. What frequently will happen though is they will yank your meter (severing you from the grid entirely) and you'll have to beg them to connect you back well after your neighbors have power again. It's still illegal, stupid, and dangerous. And yes, I'm posting that a lot in this thread - I don't want anyone to get killed.
... the utility is supplying no voltage, but that's no reason for you to power their lines for them! Never EVER EVER operate a generator in a manner that feeds into the grid. You could kill someone, yourself included. If there's a downed powerline due to a tree, the grid will probably have blown their 2000a fuse and it will be dead - but you'll be backfeeding the otherside with whatever power your generator can put out. Not a good idea at all.
Also, you'll be attempting to power your neighborhood that's also severed from the grid.
Just don't do it. Get a transfer switch, don't use a ghetto male->male extension cord for anything.
Indeed. A 200 amp manual transfer switch can be found for $400 online. This gives you the ability to have a male plug coming out of the transfer switch that can never be powered by the utility - if it's connected, the mains are disconnected.
They usually come in the form of a breaker box. Installation isn't trivial, but it's not exceptionally difficult. First, identify what circuits are "must have" during a blackout. This would be:
Next, wire in your transfer switch to your main breaker box. Some go on their own 200amp breaker, others may be wired directly to the rails. TURN OFF YOUR MAIN BREAKER BEFORE WORKING ON YOUR SYSTEM. Read the manual to your transfer switch carefully, incorrect installation can be extremely dangerous.
Once the new subpanel is installed, you can move your protected circuits to it one-by-one. With mains power off, remove the breaker from your main panel, put it in the subpanel, and move the associated wires. Don't forget to replace the hole in your main panel with a blank, or you'll have a safety hazard. Once all the circuits are transferred, make a male plug for the AC input to the transfer switch that uses a heavy gauge connector (200a for a 200a switch). You may be able to skimp there as long as your extension cord is rated above the BREAKER on your generator. Not the rated power, but what it actually trips at.
With all that, a startup tip would be to power up the generator, turn OFF all the circuits in the subpanel, switch the input to the generator, and power them up one by one.
And please PLEASE check local code before trying this yourself. I have left things out that vary from state to state, and some other details that you have to know before trying something like this (what gauge wire to use between the main panel and your transfer switch, for instance). If you have a friend who is a LICENSED electrician you should definitely ask them to look over your plan, and inspect your final work before you use it.
Finally, not every locale allows owner-improvements to electrical systems, and you may have to use a licensed contractor.
Never. Ever. _EVER_ do this. You never want any midpoint link in an electrical system rated lower then your source. This means for a 20a generator you want a 20a transfer switch, not a 15a. If your insurance company finds you did it anyway they WILL void your policy.
"Oh but all I'll ever plug into this outlet is a smoke detector, so I can just use this 22gauge speaker wire but I'll leave it hooked up to a 20a breaker because it's too much effort to change it out."
See how ridiculous that sounds? Don't be that guy. Remember that whenever doing amateur home improvement, if you don't know what you're doing GET SOMEONE WHO DOES TO HELP YOU.
Downloading isn't an infringing offense, despite what the RIAA/MPAA try to tell you. Copyright only covers distribution - if I have 100,000 ripped mp3s on my computer, that's legal (now a gray area). They have to prove she uploaded those tracks in order to have damages.
Of course, that's really REALLY difficult to do, so they've come up with the novel claim of "making available" being equivalent to distribution.
Yeah a debt-dodging temporary offshoot of a major monopoly puts out a badly-worded update regarding their email service - huge shocker. As anyone with more of a clue then a slashdot editor realized, this simply meant that the branded email services were being transferred from the myverzion to "myverizon except skinned myfairpoint" portal.
Here's my guess as to what's going to happen. Verizon spins off "Fairpoint", saddles it with shitloads of debt. After a short term (under 3 years) Fairpoint cites "Market factors outside our control" and goes bankrupt, discharging the debt. Verizon provides DIP financing, which gives them priority access to their assets, Fairpoint fails 6 months later and Verizon gets it all back, minus the debt. Presto!
Because the only way to solve anything is by killing someone, got it. Glad we've reduced our choices to "surrender" or "kill all the ragheads because some of them might not like us!"
You know what, I'm almost hoping we invade Iran and Pakistan. Because to do that, we'd have to re-implement the draft. Then see how popular "shoot first talk later" is as a strategy.
So what you're saying is the attack on the twin towers was completely justified if just one soldier was hiding in those buildings? Or if they thought there was?
Let me help you:
"The truth is that those idiots should not be hiding in those towers, they should stay in their barracks. The reason they won't do that is they're complacent in our military superiority."
Seriously, I wish people would think through the things they say.