История изменений

Нормально

Conclusions

In the end, the recommendation is pretty clear – a ZFS zvol with ext4, qcow2 files, and writeback caching offers you the absolute best of everything. (Using xfs on a zvol would almost certainly perform as well, or even better, but I didn’t test that exact combination here.) Best read performance, best write performance, qcow2 management features, ZFS snapshots / replication / data integrity / optional compression / optional deduplication / etc – there really aren’t any drawbacks here.

If you can’t or won’t use ZFS for whatever reason (like licensing concerns), xfs is probably your next best bet – but if that scares you, just use ext4 – the difference won’t be enough to matter much in the long run.

However these tests weren’t being run on production hardware, so I’m honestly unsure if I had limited the ARC on the host for them. Wouldn’t have made too big a difference either way; this was a 32GB RAM machine doing absolutely nothing but running the tests.

Много памяти и UPS обязательны.

Нормально

Conclusions

In the end, the recommendation is pretty clear – a ZFS zvol with ext4, qcow2 files, and writeback caching offers you the absolute best of everything. (Using xfs on a zvol would almost certainly perform as well, or even better, but I didn’t test that exact combination here.) Best read performance, best write performance, qcow2 management features, ZFS snapshots / replication / data integrity / optional compression / optional deduplication / etc – there really aren’t any drawbacks here.

If you can’t or won’t use ZFS for whatever reason (like licensing concerns), xfs is probably your next best bet – but if that scares you, just use ext4 – the difference won’t be enough to matter much in the long run.

Много памяти и UPS обязательны.

Нормально

Conclusions

In the end, the recommendation is pretty clear – a ZFS zvol with ext4, qcow2 files, and writeback caching offers you the absolute best of everything. (Using xfs on a zvol would almost certainly perform as well, or even better, but I didn’t test that exact combination here.) Best read performance, best write performance, qcow2 management features, ZFS snapshots / replication / data integrity / optional compression / optional deduplication / etc – there really aren’t any drawbacks here.

If you can’t or won’t use ZFS for whatever reason (like licensing concerns), xfs is probably your next best bet – but if that scares you, just use ext4 – the difference won’t be enough to matter much in the long run.

Много память и UPS обязательны.