[pve-devel] [PATCH storage 1/1] esxi: improve error handling for fuse mount tool

[Dominik Csapak]

if the fuse tool encounters an error early, it prints it like:
   Error: some error message
on stderr.

We can capture that here by redirecting STDERR to $wr and die'ing with
the error message.

With this we die with the original error message instead of only
with the return code which is telling the user nothing and does not
help us debug.

Signed-off-by: Dominik Csapak <d.csapak at proxmox.com>
---
 src/PVE/Storage/ESXiPlugin.pm | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/PVE/Storage/ESXiPlugin.pm b/src/PVE/Storage/ESXiPlugin.pm
index b8bce0e..8dc33fc 100644
--- a/src/PVE/Storage/ESXiPlugin.pm
+++ b/src/PVE/Storage/ESXiPlugin.pm
@@ -222,6 +222,10 @@ sub esxi_mount : prototype($$$;$) {
 		// die "failed to get file descriptor flags: $!\n";
 	    fcntl($wr, F_SETFD, $flags & ~FD_CLOEXEC)
 		// die "failed to remove CLOEXEC flag from fd: $!\n";
+
+	    # capture errors from stderr
+	    open(STDERR, ">&", \*$wr) or die "unable to redirect STDERR: $!\n";
+
 	    # FIXME: use the user/group options!
 	    exec {$ESXI_FUSE_TOOL}
 		$ESXI_FUSE_TOOL,
@@ -245,7 +249,7 @@ sub esxi_mount : prototype($$$;$) {
     undef $wr;
 
     my $result = do { local $/ = undef; <$rd> };
-    if ($result =~ /^ERROR: (.*)$/) {
+    if ($result =~ /^ERROR: (.*)$/i) {
 	die "$1\n";
     }
 
-- 
2.39.2