Re: "Transaction commit" in btrfs sub del

[Roman Mamedov <rm@romanrm.net>]

On Thu, 23 Oct 2014 17:44:46 +0200
Piotr Pawłow <pp@siedziba.pl> wrote:

> On 23.10.2014 16:24, Roman Mamedov wrote:
> > I was under impression that the "Transaction commit:" setting in 'btrfs sub
> > del' finally allows us to make it not return until all free space from the
> > snapshots that are being deleted, is completely freed up.
> 
> This is not what "commit-each" or "commit-after" options do. These are 
> only to make sure, that the deletion is commited and the subvolume 
> doesn't reappear after a crash.

But is that not already ensured by a regular 'sync', or 'btrfs fi sync'?

> You probably want "subvolume sync" command, introduced in btrfs-progs 3.17:
> 
> btrfs subvolume sync <path> [<subvol-id>...]
>          Wait until given subvolume(s) are completely removed from the 
> filesystem.

Oh right, *that*'s the one I was thinking of.

-- 
With respect,
Roman