On Saturday August 13, a1426z@xxxxxxxxx wrote: > > > > WriteMostly is just a flag that tells us which devices will get the > > write-behinds, and which will not. You'll be able to mix any > > combination of WriteMostly devices and normal devices in a raid1. > > > > Yes, but doesn't WriteMostly imply ReadDelay? > If so, doesn't that mean that WriteBehind is dependent on ReadDelay? I'm not sure what you mean by "ReadDelay". We never deliberately delay reads. However some devices (e.g. network connection to remote mirror) may have a higher read latency, and these would be appropriate for WriteMostly. As read-latency and write-latency are likely to go together, it seems reasonable for WriteMostly and WriteBehind to go together. Do you disagree? NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
