Long-time maintenance of Hammer2 on HDD

Mikhail Novosyolov m.novosyolov at rosalinux.ru
Fri Nov 8 19:29:39 PST 2019

Are those scripts available in public? It would be interesting to look 
at examples how Hammer snapshots are managed.

08.11.2019 20:28, Justin Sherrill пишет:
> For what it's worth, the many, many bulk builds of dports using
> poudriere and synth and dsynth are happening on hammer/hammer2 disks,
> and to my knowledge, there has been no degradation over time.
> On Thu, Nov 7, 2019 at 5:18 PM Mikhail Novosyolov
> <m.novosyolov at rosalinux.ru> wrote:
>> As far as I understand, Hammer2 was designed mainly for flash memory (SSD, NVMe).
>> Currently I am using it on a 2 TB HDD.
>> Imagine that a lot of files and snapshots are created and deleted and there are multiple MySQL databases there.
>> How will Hammer2 consistency and performance degrade over time in this use case?
>> Did not find information about HDDs and defragmentation in sys/fs/Hammer2/DESIGN.

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