Zuluster

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  1. Zuluster
    @limetech, bumping this thread your way again, we got your attention in November but lost you since then. Issue is, anyone using Samsung SSDs (among other brands too) in a btrfs cache pool in unraid will see performance fall off a cliff due to partitions starting on sector 64. E.g., if you transfer a large file from/to the btrfs cache pool, all the dockers in unraid will lock up. @wgards, best option for now is to drop your cache down to one drive and reformat to XFS.
  2. Zuluster
    Dell R620XD, I don't see a way to power the drives outside of the backplane, although I haven't looked extensively. I was looking at the flex bays for mounting the SSDs but I think those go through the HBA just the same.
  3. Zuluster
    I have this issue, running H310 HBA with an 860 Pro SSD in cache formatted as XFS. My cache used to be a btrfs raid with three SSDs but it caused major performance problems. Formatting to XFS solved that. It sounds like ext4 would solve this trim problem. Is formatting the cache drive as ext4 even an option?
  4. Zuluster
    Following this thread hoping for an update in the future on this. Like others, multi-disk Samsung SSD Cache in BTFRS has terrible performance when moving large amounts of data. Unraid and all my dockers would lock up. Moved to single disk SSD XFS and it flies now. Also moved to nightly backups of my appdata but I'd ultimately like to get a pool going again in case of drive failure. Anyone know if this issue with btfrs has been reported as a bug yet?