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Since moving to the Mellanox cards I have had no 'slow requests are blocked'.

I'm using CONNECTX-3 cards. Note that MCX314A-BCBT are ethernet cards. If you want to run InfiniBand you need MCX354A-FCBT.

Yes just using the Mellanox cards in Ethernet mode fixed the problem for me. I did move to using the Mellanox switches for faster connections. Since I made the switch I have seen no slow reads. Ceph works great now.

I had a similar problem. I have Intel 10gb cards. I had all sorts of slow requests. So I decided to upgrade my network to InfiniBand. I purchased some Mellanox cards and 10gb adapters. I install the new cards and started using the 10gb adapters with my existing 10gb fiber switch and all my slow...

I found the following worked well for me: ceph tell 'osd.*' injectargs '--osd-max-backfills 16' ceph tell 'osd.*' injectargs '--osd-recovery-max-active 4'

You have to make sure all your machines in the ceph cluster are using the latest code. The previous build was a development branch, and did not support nodes with different versions. The latest version is a release candidate (RC). I was bit by this yesterday too. Had to shut everything down and...

It's not very predictable when everything goes to rename#! I added the following to /etc/default/grub: GRUB_CMDLINE_LINUX="net.ifnames=0" You need to do an update-grub2, then reboot. Now you can create a file /etc/udev/rules.d/70-persistent-net.rules: SUBSYSTEM=="net", ACTION=="add"...

Any still seeing this (pve-manager/3.3-5/bfebec03 (running kernel: 2.6.32-33-pve)). I have had my cluster of four identical nodes go down 4 times in the past week with this type of error. I'm using a managed 10gb switch. I have not found a way to make this reproducible. Seems to be happening at...