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From: Fiona Ebner <f.ebner@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [pve-devel] [PATCH storage 2/6] export: redirect stdout to avoid any unrelated messages ending up in the export stream
Date: Fri, 13 Dec 2024 17:30:33 +0100	[thread overview]
Message-ID: <20241213163037.91508-3-f.ebner@proxmox.com> (raw)
In-Reply-To: <20241213163037.91508-1-f.ebner@proxmox.com>

Current export implementations luckily seems to not run into this
issue yet. However, for the upcoming implementation for RBD, mapping a
volume would print the device path to STDOUT, thus messing up the
export stream.

Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
---
 src/PVE/CLI/pvesm.pm | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/PVE/CLI/pvesm.pm b/src/PVE/CLI/pvesm.pm
index 9b9676b..d308b3d 100755
--- a/src/PVE/CLI/pvesm.pm
+++ b/src/PVE/CLI/pvesm.pm
@@ -315,7 +315,10 @@ __PACKAGE__->register_method ({
 
 	my $outfh;
 	if ($filename eq '-') {
-	    $outfh = \*STDOUT;
+	    # No other messages must go to STDOUT if it's used for the export stream!
+	    open($outfh, '>&', STDOUT) or die "unable to dup() STDOUT - $!\n";
+	    close(STDOUT);
+	    open(STDOUT, '>', '/dev/null');
 	} else {
 	    sysopen($outfh, $filename, O_CREAT|O_WRONLY|O_TRUNC)
 		or die "open($filename): $!\n";
-- 
2.39.5



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  parent reply	other threads:[~2024-12-13 16:31 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-12-13 16:30 [pve-devel] [PATCH-SERIES storage 0/6] basic RBD import/export Fiona Ebner
2024-12-13 16:30 ` [pve-devel] [PATCH storage 1/6] rbd plugin: schema: document default value for 'krbd' setting Fiona Ebner
2024-12-13 16:30 ` Fiona Ebner [this message]
2024-12-13 16:30 ` [pve-devel] [PATCH storage 3/6] rbd plugin: factor out helper to check if volume already exists Fiona Ebner
2024-12-13 16:30 ` [pve-devel] [PATCH storage 4/6] rbd plugin: implement volume import/export Fiona Ebner
2024-12-13 16:34   ` Fiona Ebner
2024-12-17 12:10     ` Fiona Ebner
2024-12-13 16:30 ` [pve-devel] [PATCH storage 5/6] common: introduce common module Fiona Ebner
2024-12-13 16:30 ` [pve-devel] [PATCH storage 6/6] plugins: volume import: align size up to 1KiB Fiona Ebner

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