From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id BBACB620CC for ; Thu, 20 Aug 2020 10:54:10 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id AA98B2B912 for ; Thu, 20 Aug 2020 10:53:40 +0200 (CEST) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [212.186.127.180]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id 16F1F2B905 for ; Thu, 20 Aug 2020 10:53:40 +0200 (CEST) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id C42044333B for ; Thu, 20 Aug 2020 10:53:39 +0200 (CEST) To: Proxmox VE development discussion , Fabian Ebner References: <20200812100127.29722-1-f.ebner@proxmox.com> <20200812100127.29722-3-f.ebner@proxmox.com> From: Thomas Lamprecht Message-ID: Date: Thu, 20 Aug 2020 10:53:39 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:80.0) Gecko/20100101 Thunderbird/80.0 MIME-Version: 1.0 In-Reply-To: <20200812100127.29722-3-f.ebner@proxmox.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.616 Adjusted score from AWL reputation of From: address KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment NICE_REPLY_A -1.361 Looks like a legit reply (A) RCVD_IN_DNSWL_MED -2.3 Sender listed at https://www.dnswl.org/, medium trust 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. [qemuserver.pm] Subject: Re: [pve-devel] [PATCH/RFC v2 qemu-server 3/3] restore_vma_archive: remove timeout for reading the device map X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Aug 2020 08:54:10 -0000 On 12.08.20 12:01, Fabian Ebner wrote: > If there is no serious problem, it shouldn't be possible to run into > this timeout anyways. It's just (extracting and) reading the header of > the (compressed) vma file. And if there is a serious problem, then the > commands will most likely fail for a different reason, e.g. unable to open, > corrupt vma, etc. > > Signed-off-by: Fabian Ebner > --- > > New in v2 > > Hope I'm not missing anything important. the process doing the read can hang on IO for a long time, that can be pretty normal, especially on network attached storage and some IO load. Not saying that this isn't OK at all, but your commit message suggests misleadingly that this would either be very short or an immediate error, which isn't exactly true. > > PVE/QemuServer.pm | 8 -------- > 1 file changed, 8 deletions(-) > > diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm > index 794819b..342114d 100644 > --- a/PVE/QemuServer.pm > +++ b/PVE/QemuServer.pm > @@ -6162,8 +6162,6 @@ sub restore_vma_archive { > > $add_pipe->(['vma', 'extract', '-v', '-r', $mapfifo, $readfrom, $tmpdir]); > > - my $timeout = 5; > - > my $devinfo = {}; > > my $rpcenv = PVE::RPCEnvironment::get(); > @@ -6260,9 +6258,6 @@ sub restore_vma_archive { > local $SIG{QUIT} = > local $SIG{HUP} = > local $SIG{PIPE} = sub { die "interrupted by signal\n"; }; > - local $SIG{ALRM} = sub { die "got timeout reading device map\n"; }; > - > - alarm($timeout); > > my $parser = sub { > my $line = shift; > @@ -6273,7 +6268,6 @@ sub restore_vma_archive { > my ($dev_id, $size, $devname) = ($1, $2, $3); > $devinfo->{$devname} = { size => $size, dev_id => $dev_id }; > } elsif ($line =~ m/^CTIME: /) { > - alarm(0); > &$print_devmap(); > print $fifofh "done\n"; > close($fifofh); > @@ -6285,8 +6279,6 @@ sub restore_vma_archive { > }; > my $err = $@; > > - alarm(0); > - > $restore_deactivate_volumes->($cfg, $devinfo); > > unlink $mapfifo; >