Andreas Gustafsson <gson%gson.org@localhost> writes: > Greg Troxel wrote: >> The other thing would be to change the alignment threshold to 128G. >> Even that's big enough that 1M not used by default is not important. >> And of course people who care can do whatever they want anyway. > > I would go further than that. Alignment is not only an issue with 4K > sector disks, but also with SSDs, USB sticks, and SD cards, all of > which are being deployed in sizes smaller than 128 GB even today. I didn't realize that. Do these devices have 4K native sectors? > My vote is for a threshold of 1 G. This means that worst case, we > could end up wasting as much as 0.1% of the capacity on alignment > (the horror!). So you mean 2048 for >= 1G? That's ok with me, too. Is there a clear motivation for 2048 vs 64? Are there any known devices where that matters? But why is just changing 63 to 64 always an issue? Or using that for >= 1G? Other than complexity, and having 3 branches.
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