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Use /sys/block/*/size to determine device size

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amulet1
2025-02-15 13:30:12 -05:00
parent aeb3547d5e
commit aac760b3cb
1 changed files with 13 additions and 15 deletions
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PureStoragePlugin.pm
+13 -15
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@@ -172,7 +172,7 @@ sub scsi_scan_new {
next unless $host =~ /^(\w+)$/;
$path = '/sys/class/scsi_host/' . $1; # untaint
if ( -d $path ) {
device_op($path, 'scan', '- - -');
device_op( $path, 'scan', '- - -' );
++$count;
} else {
warn "Warning :: SCSI host path $path does not exist.\n";
@@ -323,7 +323,7 @@ sub purestorage_name {
sub get_device_path_wwn {
my ( $serial ) = @_;
die "Error :: Volume serial is missing" unless length( $serial );
die 'Error :: Volume serial is missing' unless length( $serial );
# Construct the WWN path
my $wwn = lc( $purestorage_wwn_prefix . $serial );
@@ -332,27 +332,25 @@ sub get_device_path_wwn {
}
sub get_device_size {
my ( $path ) = @_;
print "Debug :: get_device_size($path)\n" if $DEBUG;
my $size = 0;
my ( $device ) = @_;
print "Debug :: get_device_size($device)\n" if $DEBUG;
exec_command(
[ 'blockdev', '--getsize64', $path ],
1,
outfunc => sub {
$size = $_[0];
chomp $size;
}
);
my $device_path = '/sys/block/' . basename( $device );
open( my $fh, '<', $device_path . '/size' ) or die "Error :: Cannot open file \"$device_path\": $!\n";
my $size = <$fh>;
close( $fh );
chomp( $size );
print "Debug :: Detected size: $size\n" if $DEBUG;
$size <<= 9;
print "Debug :: Device \"$device\" size is $size bytes\n" if $DEBUG;
return $size;
}
sub device_op {
my ( $device_path, $op, $value ) = @_;
open( my $fh, '>', $device_path . '/' . $op ) or die "Could not open file \"$device_path/$op\" for writing.\n";
open( my $fh, '>', $device_path . '/' . $op ) or die "Error :: Could not open file \"$device_path/$op\" for writing.\n";
print $fh $value;
close( $fh );
}