restic check doesn't show progress on large repos

[patrickwolf]

Describe the bug
Backup and restore show progress in Backrest. But check does not and on a big repo it can take 8+ hours to run.

To Reproduce
Click on check on your repo

Expected behavior
See progress like backup and restore show

Platform Info

• Any platform
• Backrest Version v.0.18

Additional context
I imagine it's here that it would need to be adjusted but really don't know the code well enough to make a PR

backrest/pkg/restic/restic.go

Lines 313 to 333 in 3ab6271

	func (r *Repo) ForgetSnapshot(ctx context.Context, snapshotId string, opts ...GenericOption) error {
	args := []string{"forget", "--json", snapshotId}
	_, err := r.executeWithOutput(ctx, args, opts...)
	return err
	}
	func (r *Repo) Prune(ctx context.Context, pruneOutput io.Writer, opts ...GenericOption) error {
	return r.runSimpleCommand(ctx, []string{"prune"}, pruneOutput, opts...)
	}
	func (r *Repo) Check(ctx context.Context, checkOutput io.Writer, opts ...GenericOption) error {
	cmd := r.commandWithContext(ctx, []string{"check"}, opts...)
	if checkOutput != nil {
	r.pipeCmdOutputToWriter(cmd, checkOutput)
	}
	if err := cmd.Run(); err != nil {
	return newCmdError(ctx, cmd, err)
	}
	return nil
	}

And thanks for backrest. I'm loving it!!

Screenshots

[patrickwolf]

at first i though its because --json is missing but that doesn't seem to as it doesn't give continuous progress like backup

so maybe the log output needs to be flushed more frequently? not sure why it is but would be cool to fix it ;)

[garethgeorge]

Noticed that --json was recently added to check actually which definitely was exciting to see added, but unfortunately it doesn't seem to support incremental progress the way restore and backup do. I'd love to see that added upstream or if I find some bandwidth it may be something I'll look at.