samuelxhu

Dm-writeboost (dmwb) is great in its current version, and i think there might be a room for improvement for better performance. I did some log-structured garbage collection (GC) work on...

My use cas is to archive, therefore I would like to have all files on the last snapshot. On Sat, Jun 11, 2022 at 12:58 PM MichaelEischer ***@***.***> wrote: >...

Indeed, the intended archive disk on a USB3 disk or a remote S3 bucket. The problem with multiple snapshots as archives is as follows: user has to search for files...

Thanks a lot. In this case , I would first try to run multiple instances of nebula on the lighthouse machine, for the purpose of serving multiple overlay networks for...

ZVOL currently does not even support noop

The default value of nomerges is 2, I will try to set it 0, re-test the cases, and report back soon. Today I can confirm that setting nomerges to 0...

Can somebody (who are familar with ZFS DMU code) investigate the IO merging logic inside DMU a bit, perhaps one can find a better solution there? Just wonder why the...

Sorry, I disagree that the current behavior of ZVOL is the right one. There are many use cases for zvol to behave like a normal block device, e.g. as backend...

@kpande Just to confirm that setting /sys/devices/virtual/block/zdXXX/queue/nomerges to 0 does not cause contiguous IO requests to merge. It seems all kinds of IO merging are, unfortunately, disabled by the current...

@shodandok ZVOL has been widely used as block devices since its beginning, such as backends for FC, iSCSI, hosting VM and even stacking with md, drdb, flashcace, drdb, rdb block...