From mboxrd@z Thu Jan 1 00:00:00 1970
Return-Path: <pbs-devel-bounces@lists.proxmox.com>
Received: from firstgate.proxmox.com (firstgate.proxmox.com [IPv6:2a01:7e0:0:424::9])
by lore.proxmox.com (Postfix) with ESMTPS id 70C481FF176
for <inbox@lore.proxmox.com>; Fri, 7 Mar 2025 11:38:11 +0100 (CET)
Received: from firstgate.proxmox.com (localhost [127.0.0.1])
by firstgate.proxmox.com (Proxmox) with ESMTP id 49A99188C1;
Fri, 7 Mar 2025 11:38:06 +0100 (CET)
Mime-Version: 1.0
Date: Fri, 07 Mar 2025 11:37:32 +0100
Message-Id: <D89YVM8JXKA5.2YPZFETE06ND5@proxmox.com>
From: "Shannon Sterz" <s.sterz@proxmox.com>
To: "Proxmox Backup Server development discussion"
<pbs-devel@lists.proxmox.com>, "Maximiliano Sandoval"
<m.sandoval@proxmox.com>
X-Mailer: aerc 0.20.1-0-g2ecb8770224a-dirty
References: <20250306120810.361035-1-m.sandoval@proxmox.com>
In-Reply-To: <20250306120810.361035-1-m.sandoval@proxmox.com>
X-SPAM-LEVEL: Spam detection results: 0
AWL 0.013 Adjusted score from AWL reputation of From: address
BAYES_00 -1.9 Bayes spam probability is 0 to 1%
DMARC_MISSING 0.1 Missing DMARC policy
KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment
SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record
SPF_PASS -0.001 SPF: sender matches SPF record
URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See
http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more
information. [proxmox.com, datastore.rs]
Subject: Re: [pbs-devel] [PATCH backup] fix #3336: cleanup when deleting
last snapshot
X-BeenThere: pbs-devel@lists.proxmox.com
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Proxmox Backup Server development discussion
<pbs-devel.lists.proxmox.com>
List-Unsubscribe: <https://lists.proxmox.com/cgi-bin/mailman/options/pbs-devel>,
<mailto:pbs-devel-request@lists.proxmox.com?subject=unsubscribe>
List-Archive: <http://lists.proxmox.com/pipermail/pbs-devel/>
List-Post: <mailto:pbs-devel@lists.proxmox.com>
List-Help: <mailto:pbs-devel-request@lists.proxmox.com?subject=help>
List-Subscribe: <https://lists.proxmox.com/cgi-bin/mailman/listinfo/pbs-devel>,
<mailto:pbs-devel-request@lists.proxmox.com?subject=subscribe>
Reply-To: Proxmox Backup Server development discussion
<pbs-devel@lists.proxmox.com>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Errors-To: pbs-devel-bounces@lists.proxmox.com
Sender: "pbs-devel" <pbs-devel-bounces@lists.proxmox.com>
On Thu Mar 6, 2025 at 1:08 PM CET, Maximiliano Sandoval wrote:
> When the last snapshot from a group is deleted we clear the entire
> group, this in turn cleans the owner for the group.
>
> Without this change, the user is unable to change the owner of the group
> after the last snapshot has been deleted. This would prevent a new
> backups to the same group from a different owner.
>
> Signed-off-by: Maximiliano Sandoval <m.sandoval@proxmox.com>
> ---
> src/api2/admin/datastore.rs | 12 +++++++++++-
> 1 file changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/src/api2/admin/datastore.rs b/src/api2/admin/datastore.rs
> index dbb7ae47..305673f1 100644
> --- a/src/api2/admin/datastore.rs
> +++ b/src/api2/admin/datastore.rs
> @@ -423,10 +423,20 @@ pub async fn delete_snapshot(
> &backup_dir.group,
> )?;
>
> - let snapshot = datastore.backup_dir(ns, backup_dir)?;
> + let snapshot = datastore.backup_dir(ns.clone(), backup_dir)?;
>
> snapshot.destroy(false)?;
>
> + let group = BackupGroup::from(snapshot);
> + if group.list_backups().is_ok_and(|backups| backups.is_empty()) {
> + if let Err(err) = datastore.remove_backup_group(&ns, group.as_ref()) {
> + log::error!(
> + "error while cleaning group {path:?} - {err}",
> + path = group.full_group_path()
> + );
> + }
> + }
> +
this bug... looks so harmless, but comes back to haunt me every time. as
explained by wobu here [1] it is not really possible to cleanly fix this
bug without reworking our locking mechanism. i did send some patches for
that (checks notes) almost 3 years ago ^^', but they are still not
applied and definitively need a rework at this point [2]. i can pick
this up again, sorry got focused on other things in the meantime.
[1]: https://lore.proxmox.com/pbs-devel/20220314093617.n2mc2jv4k6ntzroo@wobu-vie.proxmox.com/
[2]: https://lore.proxmox.com/pbs-devel/20220824124829.392189-1-s.sterz@proxmox.com/
> Ok(Value::Null)
> })
> .await?
_______________________________________________
pbs-devel mailing list
pbs-devel@lists.proxmox.com
https://lists.proxmox.com/cgi-bin/mailman/listinfo/pbs-devel