On Tue, 07 Nov 2023 11:46:53 +0200, Anssi Hannula wrote:
> resize2fs block_mover() flushes data after each extent and, curiously,
> only if progress indicator is enabled, every inode_blocks_per_group
> blocks.
>
> This significantly affects performance, e.g. on a tested large
> filesystem on top of MD-RAID6+LVM+dm-crypt these flush calls reduce the
> operation rate from approx. 500MB/s to 5MB/s, causing extremely long
> shrinking times for large size deltas (70TB in my case).
>
> [...]
Applied, thanks!
[1/1] resize2fs: avoid constantly flushing while moving blocks
commit: e0e6b13d0ea7330234a6fe51ec3ba13ef884735e
Best regards,
--
Theodore Ts'o <[email protected]>