On Thu, Feb 18, 2021 at 12:59 AM Qu Wenruo <quwenruo.bt...@gmx.com> wrote: > Just send a mail to the fs-devel mail list, titled "page->index > limitation on 32bit system?". > > I guess your experience as a real world user would definitely bring more > weight to the discussion. > > Thanks, > Qu
Given that it sounds like the issue is the metadata address space, and given that I surely don't actually have 16TiB of metadata on a 24TiB file system (indeed, Metadata, RAID1: total=30.00GiB, used=28.91GiB), is there any way I could compact the metadata offsets into the lower 16TiB of the virtual metadata inode? Perhaps that could be something balance could be taught to do? (Obviously, the initial run of such a balance would have to be performed using a 64-bit system.) Perhaps, on 32-bit, btrfs itself or some monitoring tool could even kick off such a metadata balance automatically when the offset hits 10TiB to hopefully avoid ever reaching 16TiB?
