June 20, 201412 yr Anyone know if this is fixed in beta6? Can't seem to get mysql working "natively" with the available 64-bit unraid plugins...WAF currently plummeting!! Would very much like to offload this and other functions to some nice and tiny arch vms... All, We've been looking into this issue (Xen Net bug / skb rides the rocket) again since it was first reported after the launch of Beta 6. We tested the ArchVM specifically and where it was crashing consistently in a previous internal beta on an older Linux kernel, it was not crashing in Beta 6. Here's my current suggestion: 1) Make a backup copy of your Arch VM image somewhere. 2) Reboot into non-Xen mode. 3) Attempt to run the VM in KVM mode with virsh and an XML configuration file. I'm going to try and put one together today for this to see if I can get a "once-Xen" VM running under KVM without any major effort. I suggest this because this error is specific to Xen and does not show itself with KVM. Post 93 from the v6b6 thread
July 6, 201412 yr Did anyone else ever try ethtool -K eth0 tso off gso off gro off and using a data.img for downloading instead of directly to the cache drive then moving downloads to cache when finished. It stops the rocket riding for me.
July 6, 201412 yr Yeah, that caused a complete meltdown for me. CPU errors that crashed the whole server in minutes after the change. I moved the MySQL stuff to a KVM, but am still back on not-quite-right native plugins for sab/sick/cp. and the KVM for MySQL wouldn't work with the databases on the array, so they're only on the cache, alone and unafraid. Kinda not happy with the situation, to tell the truth, but not a lot of options available... Glad to hear it's working for you though!
July 6, 201412 yr Did anyone else ever try ethtool -K eth0 tso off gso off gro off and using a data.img for downloading instead of directly to the cache drive then moving downloads to cache when finished. It stops the rocket riding for me. Same here Sent from my iPhone using Tapatalk
July 6, 201412 yr Yeah, that caused a complete meltdown for me. CPU errors that crashed the whole server in minutes after the change. I moved the MySQL stuff to a KVM, but am still back on not-quite-right native plugins for sab/sick/cp. and the KVM for MySQL wouldn't work with the databases on the array, so they're only on the cache, alone and unafraid. Kinda not happy with the situation, to tell the truth, but not a lot of options available... Glad to hear it's working for you though! Yeah I remember that. It happens to me when I pin cpus. I get CPU rcu_sched errors and hard crash. I use mysql (LAMP) with mythtv backend still in a ubuntu vm but moved other apps to docker today.
July 23, 201411 yr EDIT/UPDATE: I found this on the Ubuntu bugs site. The workaround that they call for is similar to what had been tried here, but it appears to work. sudo ethtool -K eth0 sg off So, if I am following the board correctly, jonp says that the way to fix this is to move your VM from Xen to KVM. Ok. I read what I could find, but nothing seems to directly apply. I have a 14.04.1 Ubuntu VM I built. What steps (other than figuring out how to write a XML file for it) do I need to do to move by VM over?
July 23, 201411 yr EDIT/UPDATE: I found this on the Ubuntu bugs site. The workaround that they call for is similar to what had been tried here, but it appears to work. sudo ethtool -K eth0 sg off So, if I am following the board correctly, jonp says that the way to fix this is to move your VM from Xen to KVM. Ok. I read what I could find, but nothing seems to directly apply. I have a 14.04.1 Ubuntu VM I built. What steps (other than figuring out how to write a XML file for it) do I need to do to move by VM over? Did the other ethtool commands not fix it for you? And did this one? I put them in rc.local so they are executed when the vm boots. I just moved my apps back to my ubuntu vm so I'll see if I ride rockets then try this if I do. I tried but not very hard to convert to kvm without success. May be easier to start fresh. There is a command to convert xen cfg to xml but don't remember it.
July 23, 201411 yr Did the other ethtool commands not fix it for you? And did this one? I put them in rc.local so they are executed when the vm boots. I just moved my apps back to my ubuntu vm so I'll see if I ride rockets then try this if I do. I tried but not very hard to convert to kvm without success. May be easier to start fresh. There is a command to convert xen cfg to xml but don't remember it. I never tried the other command. I saw that others had problems with it and looked for other solutions. This one came from the bug squasher assigned this bug on the Ubuntu build (although, it appears this is a Xen bug and not a Ubuntu bug--people here have had the problem on Arch too). I have not made the fix permanent yet, I was making sure that the problem did not recur first.
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