This reverts commit
c3442aa5546b029a524928d10c7ecabe0024c137.
Nowadays, relying on 'readlink /sys/block/nvmeXnY/device' won't always
lead to the correct device, as reported in the community forum[0],
where it results in '../../nvme-subsys0' and there's no matching entry
under '/dev/'.
Since Linux kernel 5.4, in particular commit
733e4b69d508 ("nvme:
Assign subsys instance from first ctrl"), the problematic situation
from bug #2020 shouldn't happen anymore.
Stated more clearly by the commit's author here[1]:
> Indeed, that commit will make the naming a bit more sane and will
> definitely prevent mistaken identity. It is still possible to
> observe controllers with instances that don't match their
> namespaces, but it is impossible to get a namespace instance that
> matches a non-owning controller.
The only other user of get_sysdir_info() doesn't use the 'device'
entry, so reverting that part is fine too.
[0] https://forum.proxmox.com/threads/113962/
[1] https://github.com/linux-nvme/nvme-cli/issues/510#issuecomment-
552508647
Signed-off-by: Fiona Ebner <f.ebner@proxmox.com>
Tested-by: Stefan Hrdlicka <s.hrdlicka@proxmox.com>
my $smartdata = {};
my $type;
- if ($disk =~ m!^/dev/(nvme\d+n\d+)$!) {
- my $info = get_sysdir_info("/sys/block/$1");
- $disk = "/dev/".($info->{device}
- or die "failed to get nvme controller device for $disk\n");
- }
+ $disk =~ s/n\d+$// if $disk =~ m!^/dev/nvme\d+n\d+$!;
my $cmd = [$SMARTCTL, '-H'];
push @$cmd, '-A', '-f', 'brief' if !$healthonly;
$data->{vendor} = file_read_firstline("$sysdir/device/vendor") || 'unknown';
$data->{model} = file_read_firstline("$sysdir/device/model") || 'unknown';
- if (defined(my $device = readlink("$sysdir/device"))) {
- ($data->{device}) = $device =~ m!([^/]+)$!; # strip directory and untaint
- }
-
return $data;
}
+++ /dev/null
-NVME MODEL 1
+++ /dev/null
-../nvme0
\ No newline at end of file
--- /dev/null
+NVME MODEL 1