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# Lustre OST/OSS subclass |
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# (C) 2010 Adrian Ulrich - |
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# This program is free software; you can redistribute it and/or |
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# modify it under the same terms as Perl itself. |
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# |
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package Lustre::Info::MDT; |
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use strict; |
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use constant PROCFS_MDS => "/proc/fs/lustre/mds"; |
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########################################################################## |
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# Creates a new MDT Object |
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sub new { |
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my($classname, %args) = @_; |
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my $self = { super=>$args{super}, mdtname=>$args{mdtname}, procpath=>PROCFS_MDS."/$args{mdtname}" }; |
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bless($self,$classname); |
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return ( -d $self->{procpath} ? $self : undef ); |
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} |
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########################################################################## |
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# Return name of MDT |
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sub get_name { |
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my($self) = @_; |
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return $self->{mdtname}; |
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} |
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########################################################################## |
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# Return the size of this MDT |
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sub get_kbytes_total { return $_[0]->_rint('kbytestotal'); } |
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########################################################################## |
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# Return how much space is free |
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sub get_kbytes_free { return $_[0]->_rint('kbytesfree'); } |
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########################################################################## |
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# # of pre-allocated inodes (at mkfs.lustre runtime) |
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sub get_files_total { return $_[0]->_rint('filestotal'); } |
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########################################################################## |
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# How many files/inodes are free |
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sub get_files_free { return $_[0]->_rint('filesfree'); } |
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########################################################################## |
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# Returns the name of the hosting blockdevice |
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sub get_blockdevice { return $_[0]->_rint('mntdev'); } |
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########################################################################## |
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# Parse and return information about the last recovery procedure |
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sub get_recovery_info { |
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my($self) = @_; |
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return $self->{super}->_parse_generic_file($self->{procpath}."/recovery_status"); |
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} |
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########################################################################## |
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# Return an integer |
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sub _rint { |
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my($self,$procfile) = @_; |
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open(PF, $self->{procpath}."/$procfile") or return -1; |
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my $num = ; chomp($num); |
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close(PF); |
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return $num; |
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} |
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1; |
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__END__ |