From: Dietmar Maurer <dietmar@proxmox.com>
To: Proxmox Backup Server development discussion
<pbs-devel@lists.proxmox.com>,
Stefan Reiter <s.reiter@proxmox.com>
Subject: Re: [pbs-devel] [PATCH proxmox-backup 4/5] backup: use flock on backup group to forbid multiple backups at once
Date: Thu, 30 Jul 2020 07:50:53 +0200 (CEST) [thread overview]
Message-ID: <1200038958.55.1596088254348@webmail.proxmox.com> (raw)
In-Reply-To: <20200729123314.10049-5-s.reiter@proxmox.com>
> + // acquire in non-blocking mode, no point in waiting here since other
> + // backups could still take a very long time
> + tools::lock_file(&mut handle, true, Some(Duration::from_nanos(0)))
> + .map_err(|err| {
> + match err.downcast_ref::<nix::Error>() {
> + Some(nix::Error::Sys(nix::errno::Errno::EAGAIN)) => {
Honestly, I would remove this special case with downcast - the default error message is good enough. Isn't it?
> + return format_err!(
> + "unable to acquire lock on backup group {:?} - another backup is already running",
> + self.group_path(),
> + );
> + },
> + _ => ()
> + }
> + format_err!(
> + "unable to acquire lock on backup group {:?} - {}",
> + self.group_path(),
> + err,
> + )
> + })?;
> +
> + Ok(handle)
> + }
> +
next prev parent reply other threads:[~2020-07-30 5:52 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 12:33 [pbs-devel] [PATCH 0/5] fix #2881: protect base snapshots and avoid races Stefan Reiter
2020-07-29 12:33 ` [pbs-devel] [PATCH proxmox-backup 1/5] fix typo: avgerage to average Stefan Reiter
2020-07-30 5:25 ` [pbs-devel] applied: " Dietmar Maurer
2020-07-29 12:33 ` [pbs-devel] [PATCH proxmox-backup 2/5] datastore: prevent deletion of snaps in use as "previous backup" Stefan Reiter
2020-07-30 6:37 ` [pbs-devel] applied: " Dietmar Maurer
2020-07-30 6:40 ` [pbs-devel] " Fabian Grünbichler
2020-07-29 12:33 ` [pbs-devel] [PATCH proxmox-backup 3/5] tools: add nonblocking mode to lock_file Stefan Reiter
2020-07-30 6:23 ` [pbs-devel] applied: " Dietmar Maurer
2020-07-29 12:33 ` [pbs-devel] [PATCH proxmox-backup 4/5] backup: use flock on backup group to forbid multiple backups at once Stefan Reiter
2020-07-30 5:50 ` Dietmar Maurer [this message]
2020-07-30 7:36 ` Stefan Reiter
2020-07-30 7:41 ` Dietmar Maurer
2020-07-30 8:02 ` Stefan Reiter
2020-07-30 6:38 ` [pbs-devel] applied: " Dietmar Maurer
2020-07-29 12:33 ` [pbs-devel] [PATCH proxmox-backup 5/5] backup: ensure base snapshots are still available after backup Stefan Reiter
2020-07-30 6:38 ` [pbs-devel] applied: " Dietmar Maurer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1200038958.55.1596088254348@webmail.proxmox.com \
--to=dietmar@proxmox.com \
--cc=pbs-devel@lists.proxmox.com \
--cc=s.reiter@proxmox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox