Re: [PATCH] btrfs-progs: tests/misc/058: reduce the space requirement and speed up the test

[Josef Bacik <josef@toxicpanda.com>]

On Tue, Aug 08, 2023 at 02:55:21PM +0800, Qu Wenruo wrote:
> [BUG]
> When I was testing misc/058, the fs still has around 7GiB free space,
> but during that test case, btrfs kernel module reports write failures
> and even git commands failed inside that fs.
> 
> And obviously the test case failed.
> 
> [CAUSE]
> It turns out that, the test case itself would require 6GiB (4 data
> disks) + 1.5GiB x 2 (the two replace target), thus it requires 9 GiB
> free space.
> 
> And obviously my partition is not that large and failed.
> 
> [FIX]
> In fact, we really don't need that much space at all.
> 
> Our objective is to test "btrfs device replace --enqueue" functionality,
> there is not much need to wait for 1 second, we can just do the enqueue
> immediately.
> 
> So this patch would reduce the file size to a more sane (and rounded)
> 2GiB, and do the enqueue immediately.
> 
> Signed-off-by: Qu Wenruo <wqu@suse.com>

Reviewed-by: Josef Bacik <josef@toxicpanda.com>

Thanks,

Josef