JonathanM
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Posts posted by JonathanM
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Current case study. http://lime-technology.com/forum/index.php?topic=32849.0 Granted this user didn't follow correct procedures for diagnosing issues, but unraid didn't help matters either.People have lost data due to correcting parity checks.If the default action for an unclean shutdown was to boot to maintenance mode with no plugins and not automatically start the array or any automatic parity check, this particular user would be in a very different situation right now. The automatic start of a correcting parity check made a bad situation much worse.
IMHO, correcting parity checks that run automatically are evil. Writing data to a disk without my explicit approval is BAD.
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There is no widely used hot spare option. Anything like that would need to be set up yourself. The whole point of the current set up is that writes to the USB drive are few and far between, so regular backups are a better option than a hot mirror. If something screws up the USB, you would be better off with the last known good backup instead of mirroring whatever corruption occurred to screw up the USB.
Unraid the OS runs pretty much entirely from RAM, and is "reinstalled" fresh every boot anyway. Any customizations will need to be configured to be redone at boot, typically called from the go file.
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However, testing the drive in another system uncovers drive errors only. This can be good or bad, depending. If you have a controller, RAM, or PSU issue in the server it can effect preclear results as well. Ideally you should get a clean preclear cycle in the exact circumstances that the drive will be used in the server.I actually have a caddy I can plug in externally via eSATA or USB on demand to do this. You could also use another system as there is no requirement that the pre-clear run on the system where the drive is to be used. -
Not sure it handles multi-pass - been a while since I created it and I don't run multiple cycles.
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The ability to safely launch it from MyMain would be great. I use a combination of the email notifications and the MyMain page to check preclear status currently.As far as launching preclear from within a GUI, I will consider it as a myMain enhancement. MyMain already monitors preclears (is this well known?).
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Are you planning on working with Joe to integrate this with his work, or are you going to rewrite the whole thing to be your supported version? There have been a whole lot of people wanting a browser integrated plug in version of preclear for a long time.
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Does this new method reduce the amount of work that the drive is asked to do? I was under the impression that the slowness of the preclear was on purpose to thoroughly test all parts of the drive possible in a reasonable period of time. Pseudo random seeks and other stuff to really work it hard.
Here is a quote directly from Joe.
When pre/post reading the disk, I intersperse reading the beginning block, random blocks of data, the linear set of blocks of the entire drive, and the last block on the device. I purposely keep the disk head moving a LOT more than if just reading each block in turn. This is to identify hardware that is marginal. If your disk or cables, or controller, or power supply cannot cope with constant activity... you probably want to know it before you assign the disk to a spot in your array. -
As I've noted before, I've never run a non-correcting check ... and likely never will. On the other hand, I certainly wouldn't start a parity check if the disk errors column wasn't all zeroes.
And here is the issue. UNRAID AUTOMATICALLY STARTS A CORRECTING PARITY CHECK AFTER A CRASH. It doesn't give you the option to evaluate the situation before it starts writing data to the parity disk.
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I have personally lost data because of a correcting parity check. I have tried to stress the importance of NOT writing ANYTHING to the disks if you suspect there is a problem until you know the nature of the problem. I really wish there was a way to boot the array to a diagnostic mode that there would be no writes of any sort, read only for all data.There were some issues under which the non-correcting parity check would have come in very handy. Imagine running a parity check that generates thousands and thousands of parity errors. Might indicate that a disk was corrupted, and perhaps should be rebuilt based on parity rather than vice versa. In such a case you would not want to blindly update parity.This topic has been debated to death in the past, and suffice it to say, in an ideal world where the disks and controllers behave as designed when an error is detected, a correcting parity check is the correct action. If something isn't behaving as it should, you can easily get into a situation where you really don't want to write to a drive without running further diagnostics.
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This UPS can handle it. It's a Powerware Prestige 9 2KVA, and the output is 16 Amps. It has no problem with laser printers, etc. Yes, it will handle a Dyson vacuum cleaner.... and I have a battery backup protected outlet without the bulk and noise in the main area of the house.
Just be sure you can only plug safe loads into it. You wouldn't want a power drill, vacuum cleaner, hair dryer, etc killing your UPS...
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Heh, I ran the outlet in my study to a iec male socket in the server room instead of the breaker box, and just used a standard PC power cord from the UPS to the iec socket. That way all the battery backups are in one room with the server, and I have a battery backup protected outlet without the bulk and noise in the main area of the house.In order to run my modem, router, network switch, VOIP phone and KVM box (to switch keyboard and monitor) from my UPS I use a regular multiple outlet mains block, suitably coloured and labelled fed from just one of the outlets on the UPS.
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Just want to remind people thinking about doing this to remember to put your ethernet switch and router on battery backup as well.
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Depends. dnsmasq can provide several different services. If you don't enable conflicting overlapping services, you should be fine.Wonder if anyone knows the answer to this - I've just realised my router is running dnsmasq too.. Is it a problem to be running two instances on the same network?
Sent from my Nexus 7 using Tapatalk
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The manual says it should be there, Legacy LAN as a boot option. Perhaps you may have to use the other network port?Sadly no luck; I lookead at all the boot options.... its a Gigabyte EX58-UD5.... I may have found a custom bios, but I am afraid it may break up my Hackintosh functionality.
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http://lime-technology.com/forum/index.php?board=31.0Maybe Tom should open a 'unraid roadmap' topic.
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Many disk browsers access the files to determine file type and display thumbnails.the disks still spin up when I'm browsing through directories (not accessing files). -
Yes.Would it be difficult to implement a plugin management system where you can view what plugins are installed, their versions, and have update/uninstall options?
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Any location other than /boot/* or /mnt/* in a stock unraid install is on a RAM drive.Any way to create a RAM drive and assign it as a cache drive (or simply mount it at all) in Linux? -
If you are only using it for short periods, power consumption isn't a concern. Just throw together the cheapest box you can, use your castoff smaller hard drives, whatever gets you a current backup. Do it sooner rather than later. I deal with people on a regular basis that all say, I was planning on backing it up, but I never got around to it. Data recovery is VERY expensive in some cases, you could put together a very nice 20TB unraid server for the average price of an expedited clean room recovery.In other words, it's MUCH better to build a low-power backup system and put it somewhere else in your home. Turn it on via WOL, do your backups, and then shut it down.
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Darn, there goes your streak of sub 1 hour response times.Not today, I've got a very busy afternoon/evening.
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Config, categories, folder/path.
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Pretty sure the shots you posted have nothing to do with getting files moved after they are finished. Sickbeard is the one doing the moving, and it only moves tv shows that are in your list in Sickbeard, so it's to be expected that movies stay.
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I don't want to send my Dropbox metadata to StorageMadeEasy.
So basically you create an account and add all of the storage resources you wish to make accessible from the interface (even drobbox accounts) when you install the client on your computer
I'm trying to be diplomatic here, but it really sounds like xlordnashx is a salesman from this sme place. He doesn't even listen to the valid point made here, in that sme would have to have all your account details from your other existing accounts that you want to use. Sounds like a security nightmare waiting to happen.
I'm genuinely curious here, xlordnashx, what unraid version are you currently running?
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If you use the official lime logo and unraid text, you may be violating trademark. Not saying you can't get them made, just that it's not nice, and may not be legal where you live. You really need to get Tom's permission before doing it.There's loads of companies that'll make custom items for you, just buy one from there. Obviously it won't go directly to Tom (Limetech's owner(?)) but least you'll have one.
If you want the profits to go to tom, I think the better thing to do would just to be to donate to him & then buy the badge elsewhere.
Re: preclear_disk.sh - a new utility to burn-in and pre-clear disks for quick add
in User Customizations
Posted