SOLVED Checksum errors - Degraded Pool too many errors

[jgreco]

s/will/could/

Which I realize is a meaningless distinction since you have to *treat* it as "will", just striving for technical accuracy though. ;-)

 

[rsquared]

Fair point. I'm usually a stickler for technical accuracy myself, so I blame it on lack of coffee. (it's not even 6 AM here)

Actually, I think my brain rounded it up to "will" when I saw that memtest had found "a lot of errors" only an hour after he got the download link.

 

[Varun Chugh]

The other important point from that thread for you is that every scrub (and you said you've done a few) done with bad RAM will corrupt your data further. Even once you get a new board and ECC memory, you can't trust what you've got on those drives.

Just on this point, if I do a wipe and set up fresh mirror on the new ECC configuration. That should clear any data corruption right?

 

[jgreco]

Yes.

 

[rsquared]

Yes your drives are probably fine, just not the data. But the second step after a new board and RAM is to figure out your cooling. You really want to see that drive temp under 40 C, and your CPU should probably hover in the 30s or 40s most of the time.

 

[Varun Chugh]

Yes.

Does this look like a good combo?

Supermicro Motherboard uATX DDR3 1600 LGA 1150 MBD-X10SLH-F-O
Intel Xeon E3-1230V3 Haswell, 3.3GHz, 8MB L3 Cache LGA 1150, 80W Quad-Core Server Processor BX80646E31230V3
Crucial 16GB Kit (8GBx2) DDR3/DDR3L-1600MT/s (PC3-12800) DR x8 ECC UDIMM Server Memory CT2KIT102472BD160B/CT2CP102472BD160B

 

[Ericloewe]

Does this look like a good combo?

Supermicro Motherboard uATX DDR3 1600 LGA 1150 MBD-X10SLH-F-O
Intel Xeon E3-1230V3 Haswell, 3.3GHz, 8MB L3 Cache LGA 1150, 80W Quad-Core Server Processor BX80646E31230V3
Crucial 16GB Kit (8GBx2) DDR3/DDR3L-1600MT/s (PC3-12800) DR x8 ECC UDIMM Server Memory CT2KIT102472BD160B/CT2CP102472BD160B

Sure, but consider the X10SLL+-F or X10SLM+-F, as they're cheaper and, practically, just as good for a FreeNAS server.

 

[Varun Chugh]

Sure, but consider the X10SLL+-F or X10SLM+-F, as they're cheaper and, practically, just as good for a FreeNAS server.

Need one more help. I replaced the RAM and have backed my data onto another disk. I then deleted the datasets on my original drive. Now when I try to detach the volume, the operation seems to happen on the UI but the system restarts in the background and come back up with the volume still in place. I hooked up a monitor and tried to detach the volume again. I see the below before the system restarts.

db:0:kdb.enter.default> testdump dump
Textdump complete.
Textdump complete.
db:0:kdb.enter.default> reset

How do I detach the volume and mark it as new?

 

[SweetAndLow]

You can just wipe the drives using dd or a windows tool or Linux tool. You just need to write over the first little bit to make them look like new.

 

[Varun Chugh]

You can just wipe the drives using dd or a windows tool or Linux tool. You just need to write over the first little bit to make them look like new.

Tried doing "dd if=/dev/zero of=/dev/ada0" via the mac terminal (SSH). Says operation not permitted.

What exactly should be the command?

 

[Robert Trevellyan]

You need to do it with root privileges, i.e. prefix it with sudo. Triple-check that you're writing to the correct device.

 

[joeschmuck]

Also, when you get your new hardware, ensure you run Memtest on your system for at a minimum of 3 complete test cycles, but I'm now of the mindset that everyone should run Memtest for several days non-stop. This test not only tests the RAM but it also tests the motherboard and CPU just because data must be transferred into and out of the RAM and verified accurate. I'd also recommend you run a CPU stress test for about 30 minutes (I never recommend longer than 30 minutes), after the Memtest, and monitor it closely to ensure your cooling system works fine and the CPU doesn't hang.

I don't know how many hard drives you have nor the case you have but try to put as much space (gap) between each drive as possible to allow for better heat dissipation. Heat is a real killer of hard drives and electronics so try to keep things cool and let your investment last longer.

With respect to your original data on your hard drives... It may or may not be corrupt but if you had a lot of Memtest failures, you very well could have a lot of corrupt files now. Any executable files (programs) I would toss, the photos or document/data files, and yes, videos, I'd retain and if they don't open, well you know the likely cause. Of course it sounds like you are already wiping your drives out.

Good luck.

 

[Varun Chugh]

Thanks for the help folks :)

 

[rsquared]

Just for clarity, did you upgrade the motherboard and CPU along with the RAM? I only ask because the Asus P8P67 doesn't support ECC. It will run just fine with ECC RAM, but it won't take advantage of the ECC functionality. Same goes for the i5 processor.

 

[Varun Chugh]

Just for clarity, did you upgrade the motherboard and CPU along with the RAM? I only ask because the Asus P8P67 doesn't support ECC. It will run just fine with ECC RAM, but it won't take advantage of the ECC functionality. Same goes for the i5 processor.

Haven't updated yet to ECC yet, but yes do understand that I will have to update CPU and motherboard too, to take advantage of ECC. Thanks :)