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John_M last won the day on November 29 2018

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About John_M

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    Away for much longer than I expected


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  1. What is the purpose of the backslash character before rm?
  2. Ah, ok. I don't have the Mover Tuning plugin installed. @djglenn It's just guesswork unless you post your diagnostics.
  3. What is the file "/usr/local/sbin/mover.old" ? I don't have such a file. Have you modified the mover from stock? Post your full diagnostics.
  4. At the time you were panicking did you think to grab diagnostics before you rebooted? They would have given some useful pointers. Has the CRC error count for the affected drives increased? It's probably a mechanical contact issue. Reseating the drives in their bays was a good move. You could also reseat the SATA breakout cable at the motherboard end and at the rear of the four drive bays. Unlikely to be related but in the interests of minimising problems in the future, how's the temperature of your processor? The Xeon 1260L has a 10 watt higher TDP than the stock Celeron G1610T so you might want to increase the fan speed. Did you run a MemTest on the new RAM?
  5. Could the boot flash device have become corrupt?
  6. That's interesting. I use a pair of physical Piholes as my DNS servers. Are there domains that need to be whitelisted to ensure proper operation of Unraid? I currently have only one entry in my whitelist (distributed.net, because I contribute to that project).
  7. I seem to remember that the default configuration checks for plugin updates the first time you open the Plugins tab each day. If there's an Internet connectivity issue it can take a long time to open. I prefer to check for updates manually so I no longer use the automatic feature.
  8. This is a more pressing problem than your VM one. Have you done a Memtest?
  9. It is not to do with parity calculations, per se, because they are quick. It is to do with the way the parity drive is updated. There are two modes of operation. The default is read-modify-write, which requires a block to be read from the parity disk, modified and rewritten. This depends on the rotational latency of the mechanical hard drive since, after reading, it has to wait for a whole rotation before it can write the data back in the same place on the platter. The advantage of this method is that only the data disk being written to and the parity disk need to be spun up - the rest of the disks can be spun down. The alternative mode is reconstruct write, sometimes called "turbo write", which reads all the data disks simultaneously and calculates then writes parity without having to read it first. It's faster because it doesn't depend on the rotational latency of the parity drive but it requires that all disks be spun up.
  10. It was determined a long time ago that the Linux kernel is better at queueing up disk I/O requests than the firmware on the drives themselves (the reverse of the situation with Windows), so in Unraid NCQ is disabled by default. See here. It looks like something's broken in the Unraid 6.7.x kernel at the moment and enabling NCQ with a value of 32 helps with mitigation, but users reverting to Unraid 6.6.7 should set it to the default "Auto", which in this case means "Off".
  11. The first one is explained above. After rebinding, Morpheus potentially has a new IP address and therefore potentially a whole new network configuration. So it might need to use different name servers for DNS resolution - DHCP servers usually offer recommended DNS servers along with IP addresses but you seem to have manually over-ridden that automatic allocation of DNS servers, so the second message shows Morpheus reading the resolver configuration file and the remaning two messages show that nameservers and have been chosen.
  12. You could use http://ip-address and let it redirect, or use http://tower and let it redirect, or if you have a DNS server, use http://tower.domain.com and let it redirect. Or, without redirection, use https://<some long hex>.unraid.net I save the last one as a browser bookmark for quick access. Just avoid using https://ip-address and https://tower because of the certificate mismatch, as Cameron explained.
  13. I had an LSI controller (on a Dell H310 card) that had problems with overheating. So I removed the heatsink and found that the thermal compound was completely dry. In fact it crumbled into pieces and fell off as I removed the heatsink. I cleaned up what remained with isopropyl alcohol and applied a small amount of Arctic MX-2 before replacing the heatsink and that fixed the problem without the need of an extra fan.
  14. You'll need to use the command line.
  15. If you mean that you want a DNS server to resolve a name into a TCP port number instead of an IP address, then no. Why not use browser bookmarks or shortcuts saved to your desktop instead?