Main references
ZFS L2ARC (Brendan Gregg) (2008-07-22) and ZFS and the Hybrid Storage Concept (Anatol Studler's Blog) (2008-11-11) include the following image:
Question
Should I interpret the vertical white line – at the SSDs layer – as a preference to use separate SSDs –
a preference to...
@ewwhite Seems like he's put enough effort into it that I'd be willing to overlook the lack of a practical component, or at least give him time to put one in before close-voting.
Welcome to Server Fault. As the FAQ states, we prefer practical, answerable questions based on specific problems that you face. That said, you've gone over a lot of theory and discussion here, but the thing that seems to be missing is the problem you're trying to solve. Add the practical details, and this has the makings of a great question. — Michael Hampton4 mins ago
I'm looking at SE clones, and some of them look really good, but as I think about this more, I'm not convinced that serveritsyourfault.com should be a Q&A site.
Uh? Too much coddling of n00bs and retards expected at SE. Not sure how you'd solve that, though, so bitching about it, and that definition are the extent of my expertise on the situation.
Problem there is that the ones that will get upvotes will be the funny ones, not the measured responses that are much more effective at getting the point across without bruising egos.
(I'm only 50% serious by the way. As a mod I'm meant to make sure that only the good content gets on the site. Encouraging a site specifically to make noise on bad content, well, thats quite the conflict)
A few minutes ago I noticed the mysterious disappearance of 65 reputation from my Server Fault account. On looking into it, I found that this question, which I'd answered last month, had been deleted. Strangely, though, it doesn't seem to have been deleted by a moderator or the community, but aut...
@MarkHenderson It seems that the question and two deleted answers are locked, but the not-deleted answer is editable. Though I haven't actually tried to save an edit to it.
This whole "nuke stuff from closed migrations" thing seems dumb. Why not just let the normal autodelete kick in for stuff that gets autodeleted, and leave stuff alone (and closed) if it has upvoted answers?
(and this is one reason I'd rather be a sysadmin than a programmer. Programming languages are another tool, like bash, or a screwdriver, not a religion)
As far as I'm concerned, if someone has to post a meta question asking why their perfectly good answer was deleted, that's something broken that needs fixing
Irony being that if they hadn't "fixed" something in the first place, they wouldn't have created a bigger break
In my somewhat limited experience, I don't get along with females who are in the computer field... It's for a variety of reasons, but I've never worked out at any level.
I am proposing that in some circumstances a rejected migration should not be automatically deleted from the destination site.
In the case where all of the following are true:
The question has a score of 0 or higher, counting only votes cast on the destination site, and
The question received at...
In the past, you knew you had a SCSI drive because it weighed more. What made them better were higher spindle speed, higher data transfer rate, larger buffer, command queueing, a heavier flywheel and a more powerful motor to spin that sucker.
Now, many of those benefits have been incorporated in...
I didn't mean people who know when a SATA RAID5 array is appropriate. People who don't understand technical differences so they waive them off as if there were none.
So @ChrisS - what's going on with mod flags lately? A month ago you and @Iain were at 300+/month, now it's down to typical levels again (and I don't look so bad with my pissy # of handled flags)
I'm not sure it was just you two. We had 5.3k flags over the last 90 days; but only <1k flags over the last 30 days. That's a pretty massive difference
I had a good time dealing with flags when Chopper3 retired. All of a sudden it went from being 0 or 1 flag in the queue when I logged on to being 20 waiting for me when I woke up
Whoah, this review system is smart. It's giving me all the content from my favourite tags
So what happens when you run out of votes for the day, but you still have review flags left. Are you then forbidden from continuing because you can't +1 good things before moving on?
We have a server with 12 TB hard disk. I am planning to install KVM. The question is how much maximum disk space one vm can use? I need 5 TB vm disk. is it possible?
I'm not entirely sure it's answerable. If he HAS an error, it should be posted. As it is, it's just engendering speculation. I certainly have never seen any sign of a coded limitation on a KVM virtual disk.
@ChrisS Yeah, pretty sure the current KVM limit is whatever the FS can handle, ever since they deep-sixed the 2TB limit, but can't say for sure without fun testing I don't have time for ATM. :(
Well there's a data structure somewhere that holds the byte/block/whatever count of the drive that's being presented to the client. So whatever size that is, that's the biggest KVM can pass through. It's probably an int64 sector count...
I think the problem is that you can't answer that question without assuming what OS he's talking about. The virtualization module isn't the limiting factor, which makes it a bad question.
If someone finds a kernel version-agnostic and distribution-agnostic canonical answer, I will gladly eat my plate of crow.
That said, I think the @HopelessN00b 's answer is good enough for an upvote. But I don't think that question as currently phrased is sufficiently answerable that an 'Accept' tick could ever be dropped on one of its answers.
Well look at it this way, the OP could still make it Noob's answer as correct; and nobody else get's to submit an answer, so he's got a monopoly on possibly correct answers.
Interesting. @MichaelHampton That redirecting all traffic through the Tor Network with IPTables would be a great question with the specifics of Anonymity networking taken out.
On a Linux system, is there a way to block all in and outbound traffic unless it passes through the Tor network. This includes any form of IP communication, not just TCP connections. For example I want UDP to be completely blocked since it cannot pass through Tor. I want this systems Internet us...
Our communications is all with partner agencies and government entities with which we have legal agreements with. SSL encryption over public networks is good enough.
Evenin' @ewwhite. Bumped into an old friend last night. Dev with DevOps sysadmin duties for a place down in LA.
Gave me some food for though. Might be time to work toward switching over to a Dev focus from a systems focus.
@MichaelHampton Actually, we have a similar issue here. We get fresh wet behind the ears social workers right out of school with no perspective. I love it when we hire people out of our own housing programs who went back to school and got a degree. They're much more realistic about how the world works and what are realistic expections of our clients.
I have used up all my votes a few times while /Reviewing close votes. A couple of times (that I've noticed, maybe it happens every time), when I've used my last vote to close while reviewing, that review hasn't been counted.
It happened again today, and I took some screen shots to verify this b...
@Adrian That's not what I mean. I mean, if you keep going down that path, soon you'll be deploying your code straight to production every 10 minutes in all its buggy goodness.
We've currently got a dedicated Microsoft SQL Server 2008 R2 server that's quickly running out of disk space. The server is hammered 24/7 pretty much and unfortunately requires a lot of IO to keep running smoothly.
We're considering purchasing a Dell Equallogic PS6010 and get some 10GbE equipmen...
So I was thinking in bed last night, trying to get to sleep, if I'm ever in the situation where I have my own DC (and I don't mean a DC like how most of us use the term, I mean a full blown fucking datacenter that consumes an entire floor of a building and makes money) I'm going to find an old Cray supercomputer and put it in the foyer
Those fuckers looked good. Why don't they make good looking hardware like that any more?
When I start my driver on Win 2008 Server x64 version, it gives error 577.
With XP x86 it works fine but probably Xp x86 doesn't care about driver signing.
Don't know if there's an issue with inf. What could be wrong here ?
@MarkHenderson Probably. Ever used a (recent) version of MS HPC Server, though? Kinda like Server Core, IMO.... it's getting harder and harder not to respect MS as making real server OSes.
@MarkHenderson Well, not as sexy as the orginials, though. I think it's a fair bit sexier than the standard 1, 2, and 4U servers everyone's pumping out these days.
@MichaelHampton Or just an LED/LCD display with system stats and such. The things are cheap enough now, there's no excuse for having <4 square inches of display on the front of your server anymore, IMO.
A travesty that my fucking Droid X from 8 years ago has more screen than our quarter million dollar backup system. Like... what the hell?
@MichaelHampton Yup, back to Mark's point about the original Crays. They used to know how to make nice servers... it's more than just cramming circuits inside a box.
So I'm thinking serveritsyourfault.com should have: a Q&A site of course, blogs for everybody above a certain reputation, and maybe some actual social networking features, like forcing everyone to read @voretaq7's twitter feed.
@HopelessN00b I've just been reading about what it takes to actually maintain one though. You need raised flooring and liquid cooling coming in through the floor, full customised support contracts just to boot the cunt up, about $30k/year in electricity costs, a line-interactive UPS that's capable of conditioning about 40A of 240v power, and an employee who knows how to actually access one at about $100k/year
All so you can have a 450Mhz computer the size of about 5 regular racks
@HopelessN00b Really? I know they were generally 10-15 years to ROI
But I can understand that. I've never had to actually interface with big-iron like that, but I know that at least one client has installed our software on AS/400
@MarkHenderson I'm pretty sure those figures are just on the hardware, support and licensing. Once you add the rapings you take on software that runs on the damn thing, the inflated cost of hiring RPG/COBOL coders, and operators to baby-sit the thing 24/7... I don't think they ever reach ROI. Or at least, I don't know any company that has.
The selling point, back in the day was well, one, big iron was the only option, and in the case of IBM, they'd do all the computer stuff for you (for big monies), but now, they're not doing so well, at least in terms of new sales and renewals.
@HopelessN00b Well I know that here our 2nd largest bank decided 6 years ago to start training their own mainframe personell rather than switch off the platform, as it was cheaper
@MarkHenderson Yup. And the companies that have big investments in mainframes will probably find it cheaper to keep using them for decades to come, but new blood getting mainframes? None. And the small portion of people who do migrate off them keep chipping away the customer base little by little.
Yeah, but that was lame. Well, that's a little harsh, but it pissed me off. Like every Bethesda game. A massive, beautiful world that gets boring by the time you're doing learning the controls, because the only thing to do is kill stuff.
@JourneymanGeek It's "my" driver, and he posted it on SO, so he almost certainly wrote it. In any case, it's quite rare that a sysadmin would have to sign a driver.
@JourneymanGeek We all have assumptions. If I post "I have a Linux box that is doing XYZ..." on SF, it's assumed that I'm administering the box. If I post the same thing on SU, it's assumed that I'm an idiot who shouldn't be messing with sharp objects.
@JourneymanGeek OK, so this guy originally posted his question on Stack Overflow, a site for professional and enthusiast programmers. His question referred to "my driver" and "my .inf file". Is it unreasonable to assume he was referring to a driver he was developing?
@MichaelHampton I got 99 problems but Driver Signing aint one
What IS a problem is goddamn Powershell signing. Scripts written in Powershell ISE save has ASCII Big-Endian instead of UTF-8, and you can't sign Big-Endian scripts :@
Actually a couple of years ago I did have to sign a driver, back when KVM was only distributing unsigned versions of the virtio drivers for Windows, but now they're distributing signed drivers.
I'm currently setting up my own 'webserver' (a Ubuntu Server on some old hardware) so I can have a mess around with PHP and get some experience managing a server.
I'm using my own little MVC framework and I've hit a snag... In order for all requests to make it through the dispatcher, I am using:...