Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
>>>>> "Mike" == Mike Snitzer <snitzer at redhat.com> writes: Mike> That is the benefit. And when coupled with the new default Mike> max_discard of 64K (pending change from Jens for 4.3) this 2GB Mike> upper limit really isn't such a big deal. Unless I'm missing Mike> something... 2GB is fine for current SATA due to the stupid range descriptors. But there are some changes in the pipeline to support descriptors with bigger ranges so that will change. However, we currently do 4GB discards on SCSI so the proposed cap will cut that in half. I'm OK with that as an interim solution. though. But I'm a bit concerned about what might be lurking in dm thinp if you trip over partial blocks like in Ming's example... -- Martin K. Petersen Oracle Linux Engineering