Messages in this thread |  | | Date | Wed, 8 Jan 2020 03:24:42 -0800 (PST) | From | Hugh Dickins <> | Subject | Re: [PATCH v5 2/2] tmpfs: Support 64-bit inums per-sb |
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On Tue, 7 Jan 2020, Chris Mason wrote: > On 7 Jan 2020, at 16:07, Dave Chinner wrote: > > > IOWs, there are *lots* of 64bit inode numbers out there on XFS > > filesystems.... > > It's less likely in btrfs but +1 to all of Dave's comments. I'm happy > to run a scan on machines in the fleet and see how many have 64 bit > inodes (either buttery or x-y), but it's going to be a lot.
Dave, Amir, Chris, many thanks for the info you've filled in - and absolutely no need to run any scan on your fleet for this, I think we can be confident that even if fb had some 15-year-old tool in use on its fleet of 2GB-file filesystems, it would not be the one to insist on a kernel revert of 64-bit tmpfs inos.
The picture looks clear now: while ChrisD does need to hold on to his config option and inode32/inode64 mount option patch, it is much better left out of the kernel until (very unlikely) proved necessary.
Thanks, Hugh
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