* test(e2e): add distributed 4x4 validation
* ci(e2e): use tmpfs for distributed pool isolation
sm-standard-4 is an ARC pod without usable loop devices, so
mount -o loop fails with ENOENT before any pool filesystem is
attached. Sized tmpfs still gives each pool a distinct st_dev
and independent 1G statfs capacity.
Co-authored-by: RustFS <hello@rustfs.com>
* test(e2e): prove operations overlap data movement
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Co-authored-by: Zhengchao An <anzhengchao@gmail.com>
Co-authored-by: Cursor Agent <cursoragent@cursor.com>