[Libguestfs] [zfs-discuss] ZFS-on-NBD

[Richard Elling]

just a few comments
+ using S3 as a block device will always suffer from the fact that it really isn’t a block device… hiding it behind any other block device interface won’t really help except in very constrained cases (basically, what you proved again)
+ ZFS aggregates writes, which further complicates fake block device interfaces
+ there is a dev effort to come up with an object-based vdev type, but I’m not aware of its current status
+ L2ARC is definitely not a write-through cache

  -- richard



> On Sep 12, 2022, at 2:55 PM, Gionatan Danti <g.danti at assyoma.it> wrote:
> 
> Il 2022-09-12 22:30 Nikolaus Rath ha scritto:
>> Hi all,
>> In case people have been wondering about the background of the various
>> questions that I asked on these lists in the last few months:
>> I've been experimenting with running ZFS-on-NBD as a cloud backup
>> solution (and potential alternative to S3QL, which I am using for this
>> purpose at the moment).
>> In case someone is interested, here is the (rather long) write-up:
>> https://www.rath.org/s3ql-vs-zfs-on-nbd.html
> 
> Interesting reading, thanks!
> 
> -- 
> Danti Gionatan
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