On 2/28/24 15:02, Vitaliy Gusev wrote:
On 28 Feb 2024, at 23:03, Matthew Grooms <[email protected]> wrote:
...
The virtual disks were provisioned with either a 128G disk image or a
1TB raw partition, so I don't think space was an issue.
Trim is definitely not an issue. I'm using a tiny fraction of the
32TB array have tried both heavily under-provisioned HW RAID10 and SW
RAID10 using GEOM. The latter was tested after sending full trim
resets to all drives individually.
It could be then TRIM/UNMAP is not used, zvol (for the instance)
becomes full for the while. ZFS considers it as all blocks are used
and write operations could have troubles. I believe it was recently
fixed.
Also look at this one:
GuestFS->UNMAP->bhyve->Host-FS->PhysicalDisk
The problem of UNMAP that it could have unpredictable slowdown at any
time. So I would suggest to check results with enabled and disabled
UNMAP in a guest.
Yes. I'm aware of issues associated with TRIM/UNMAP, but that's not
implemented by any hardware RAID vendor that I'm aware of. I tested with
both hardware and software RAID10. The issue I'm reporting is present in
both cases. I'm quite certain this has nothing to do with TRIM/UNMAP.
-Matthew
