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refactoring - split a single regex matching to three matchings

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* one line regular expression matching to multiline text is a bit hard to picture
 * apply regular expressions to each line
  * first line should like "active raid1 sda1[0] sdc1[2] sdb1[1]"
  * second line should like "123456 blocks super 1.2 [2/2] [UU]"
  * third line will appear when the array is in action
This commit is contained in:
Ken-ichi Mito 2015-05-04 15:54:59 +09:00
parent 2e0acaca2b
commit 2670e4dc26
1 changed files with 45 additions and 11 deletions
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56
plugins/disk/raid
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@ -30,18 +30,53 @@ if ( $ARGV[0] and $ARGV[0] eq "config" ) {
} }
open(my $mdstat, "/proc/mdstat"); open(my $mdstat, "/proc/mdstat");
my $text; my(@text) = <$mdstat>;
{ # contents of <$mdstat> may be changed at next reading, so fetch the contents at a time
local($/);
$text = <$mdstat>;
}
close($mdstat); close($mdstat);
# Should look like "active raid1 sda1[0] sdc1[2] sdb1[1]" my($devinfo_re, $devstat_re, $action_re) = (
# Interestingly, swap is presented as "active (auto-read-only)" '(md\d+)\s+:\s+active\s+(\(auto-read-only\)\s+|)(\w+)\s+(.*)',
while ($text =~ /(md\d+)\s+:\s+active\s+(\(auto-read-only\)\s+|)(\w+)\s+(.*)\n.*\[(\d+)\/(\d+)]\s+\[(\w+)]\n(.*(check|resync)\s=\s+(\d+\.\d+)%|.*\n)/ ) { '.*\[(\d+)\/(\d+)]\s+\[(\w+)]',
my($dev,$dummy,$type,$members,$nmem,$nact,$status,$dummy2,$dummy3,$proc) = ($1,$2,$3,$4,$5,$6,$7,$8,$9,$10); '(.*(check|resync)\s=\s+(\d+\.\d+)%)',
# print "$text\nitem: $dev $type ($members) status=$status $proc\n"; );
my($dev, $type, $members, $nmem, $nact, $status, $proc);
while (@text) {
my $line = shift @text;
if ($line =~ /$devinfo_re/) {
# first line should like "active raid1 sda1[0] sdc1[2] sdb1[1]"
$dev = $1;
$type = $3;
$members = $4;
$line = shift @text;
if ($line =~ /$devstat_re/) {
# second line should like "123456 blocks super 1.2 [2/2] [UU]"
$nmem = $1;
$nact = $2;
$status = $3;
}
else {
# sencond line did not exist on /proc/mdstat
next;
}
$line = shift @text;
if ($line =~ /$action_re/) {
# third line should like " [==>..................] check = 10.0% (12345/123456) finish=123min speed=12345/sec"
# this line will appear only when the array is in action
$proc = $3;
}
else {
# array is not in action
unshift(@text, $line);
}
}
else {
# skip until first line is found
next;
}
if ( $ARGV[0] and $ARGV[0] eq "config" ) { if ( $ARGV[0] and $ARGV[0] eq "config" ) {
print "$dev.label $dev\n"; print "$dev.label $dev\n";
print "$dev.info $type $members\n"; print "$dev.info $type $members\n";
@ -74,7 +109,6 @@ while ($text =~ /(md\d+)\s+:\s+active\s+(\(auto-read-only\)\s+|)(\w+)\s+(.*)\n.*
print $dev, "_rebuild.value $rpct\n"; print $dev, "_rebuild.value $rpct\n";
print $dev, "_check.value $cpct\n"; print $dev, "_check.value $cpct\n";
} }
$text = $';
} }
exit 0; exit 0;