Mika Borner writes:
> >given that zfs always does copy-on-write for any updates, it's not > clear > >why this would necessarily degrade performance.. > > Writing should be no problem, as it is serialized... but when both > database instances are reading a lot of different blocks at the same > time, the spindles might "heat up". > > >If you want a full copy you can use zfs send/zfs receive -- either > >within the same pool or between two different pools. > > Ok. But then again, it might be necessary to throttle zfs send/receive > replication between pools. Otherwise the replication process might be > influencing the production environment performance too much. Or is there > already some kind of prioritization, that I have overlooked? > > //Mika > > # mv Disclaimer.txt /dev/null > > I think this is heading toward 'quotas and reservation' of IOPS. Sounds like something that would be very useful. I don't know if this is planned. -r > > > > > ------------------------------------------------------------------------- > This message is intended for the addressee only and may > contain confidential or privileged information. If you > are not the intended receiver, any disclosure, copying > to any person or any action taken or omitted to be taken > in reliance on this e-mail, is prohibited and may be un- > lawful. You must therefore delete this e-mail. > Internet communications may not be secure or error-free > and may contain viruses. They may be subject to possible > data corruption, accidental or on purpose. This e-mail is > not and should not be construed as an offer or the > solicitation of an offer to purchase or subscribe or sell > or redeem any investments. > ------------------------------------------------------------------------- > > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
