From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF5E3C4743C for ; Mon, 21 Jun 2021 23:15:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C0B7061042 for ; Mon, 21 Jun 2021 23:15:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231526AbhFUXRX (ORCPT ); Mon, 21 Jun 2021 19:17:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231552AbhFUXRX (ORCPT ); Mon, 21 Jun 2021 19:17:23 -0400 Received: from mail-qk1-x72b.google.com (mail-qk1-x72b.google.com [IPv6:2607:f8b0:4864:20::72b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C350C061574 for ; Mon, 21 Jun 2021 16:15:07 -0700 (PDT) Received: by mail-qk1-x72b.google.com with SMTP id g4so33591473qkl.1 for ; Mon, 21 Jun 2021 16:15:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=fTfNDJzejXnE1YW8pbjEhPLN4XT04vM7ykkceXdecBs=; b=sQ64T8l5rfZD9ADMEfrH9nA3UfwQfgVY0FereaidraBr9Hbi+JxaGPvKtxganah7cO +zt04OYcU4UlmGBQhgER9f6sYGmnauh/Eqzj6QEJEFnXiVLIhpV3/YN4G1Pzlz3R6rS2 TzHOX5sxg0mN02hu7f/uuDiH+M6GlBi7n0gWOtHWM89MNW1YwAomTUjr+mJE581L6Huk MOaaxtYvOEYF0i8k6kjmzgMV+4Ag76kXlB+cWxqO1upbxmgRUSp5AKcbJ+uLcRKt5nEa AHgB7TYrEpYh/MKXXbBEJcVy8BQ3nx3azDAEDTuvyK4VMSbzDOikJ4MoEq6D/1oBKlCO /MiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=fTfNDJzejXnE1YW8pbjEhPLN4XT04vM7ykkceXdecBs=; b=YSTP5p1H4i91dxy2U+zopgrTz4m1CoEhUvJsVSQau0pCMRB4tuNyMheaNU6jFAxAn2 oLUNfrSa5uJiBNtmatCV/F53KisbqnVAUIBrvmPBmwalVmy4PyUAX1ns1jViTtzFDJLZ /LICBJFimBYyRlJyKy+mH6nzhdGl3aKwvH8vGad3sPUb4npa/j2cOXCfZFQ+P0BHm7MZ +oqmvkx0aa5Rdc2ZM0o6csTqKTPFEQb/enPoTShsUraYbJ/HC4BJ1l+JcXouEP6O6xWi JYiawb0Mq+635MNXbQ8bwmVp/UGIqHHmB/qVBDxnPS5uusJ8R+S1vseUu59NNPacnPYT WhJA== X-Gm-Message-State: AOAM532dVdNl2BUF9Dc61LNoRsJmcXBIzpzJ/gFfxLmJNS9SghNe4QiN 3A8s+Njk3WWzWK82wLEpbAZVVn2pifkFdb5G5PI= X-Google-Smtp-Source: ABdhPJyAMwmC2RmUV90mgAbcxa+yyispCm9NkD1L0aHS3qeHyAsNnzHSDIedEYlTPKwBqqI4NFJ315euvkmjO2w8E9c= X-Received: by 2002:a25:4055:: with SMTP id n82mr779792yba.242.1624317306651; Mon, 21 Jun 2021 16:15:06 -0700 (PDT) MIME-Version: 1.0 References: <2bb832db-3c33-d3ba-d9ae-4ebd44c1c7f3@gmail.com> <1b89f8a3-42a4-3c6d-aec8-1b91a7b43713@gmx.com> In-Reply-To: <1b89f8a3-42a4-3c6d-aec8-1b91a7b43713@gmx.com> From: Asif Youssuff Date: Mon, 21 Jun 2021 19:14:54 -0400 Message-ID: Subject: Re: Filesystem goes readonly soon after mount, cannot free space or rebalance To: Qu Wenruo Cc: Btrfs BTRFS Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Qu, thanks for responding. On Mon, Jun 21, 2021 at 3:42 AM Qu Wenruo wrote: > Can you delete some subvolumes/snapshot to free some space? > > In such critical case, I don't believe balance will do any help. > > Regular file deletion also needs extra metadata, thus maybe only > subvolumes/snapshots deletion can help. I have tried removing snapshots, but the disk continues to go ro - after remount, the subvolumes are still there. Is there a way to force a sync of the subvolume removal before the fs goes ro? -- Thanks, Asif