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fix: check connection for nfs v4 only server

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the check_connection is done by querying the exports of the nfs server
in question. With nfs v4 those exports aren't listed anymore since nfs
v4 employs a pseudo-filesystem starting from root (/).

rpcinfo allows to query the existence of an nfs v4 service.

Signed-off-by: Alwin Antreich <a.antreich@proxmox.com>
This commit is contained in:
Alwin Antreich
2020-12-16 12:59:04 +01:00
committed by Thomas Lamprecht
parent d7fedf266a
commit 89b9ac961a
1 changed files with 9 additions and 1 deletions
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10
PVE/Storage/NFSPlugin.pm
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@ -160,8 +160,16 @@ sub check_connection {
my ($class, $storeid, $scfg) = @_;
my $server = $scfg->{server};
my $opts = $scfg->{options};
my $cmd = ['/sbin/showmount', '--no-headers', '--exports', $server];
my $cmd;
if (defined($opts) && $opts =~ /vers=4.*/) {
# nfsv4 uses a pseudo-filesystem always beginning with /
# no exports are listed
$cmd = ['/usr/sbin/rpcinfo', '-t', $server, 'nfs', '4'];
} else {
$cmd = ['/sbin/showmount', '--no-headers', '--exports', $server];
}
eval { run_command($cmd, timeout => 10, outfunc => sub {}, errfunc => sub {}) };
if (my $err = $@) {