thornber@xxxxxxxxxx writes: > On Tue, Feb 05, 2013 at 02:30:00PM +0530, M. Mohan Kumar wrote: >> >> Hello, >> >> We are adding a lvm2api for creating a thin pool. During thin pool >> creation if user does not specify anything for the low water mark >> thresold, it would result in 0 and no events will be generated when thin >> pool capacity is reaching its full size. > > An event will be generated. Yeah, I missed that. But if thin pool is consumed fully there is no enough time to resize the pool and it may result in unwanted scenario? > >> I am not sure what should be the default low water threshold >> percentage. Is there any recommended value for low water threshold value >> in dm thin pools? > > It's very hard to say since it depends on your use case. In general > you want to allow dmeventd plenty of time to extend the pool before > you run out of space. So if you're seeing a _peak_ provisioning rate of > 100meg a minute, I'd set the lwm to about 100meg. It would be nice if LVM > could help you through this process. Do you mean mesaure how much MB/blocks dm-thin is able to provision in a minute and treat it as the default lwm blocks? > > - Joe > > -- > lvm-devel mailing list > lvm-devel@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/lvm-devel -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
