Eugene Vilensky asks:
> What is an easy way to identify if the scsi devices of a host are
> attached via FC or just scsi?
Depends who wants to know, when, and in what format.
Here's what I do as a priority callout for multipath. Note this only works for
RHEL5, not RHEL4, because RHEL4 kernel doesn't give you all the requisite links.
#!/usr/bin/perl
my $dev = $ARGV[0];
#open LOG, ">> /tmp/prio_compellent";
#print LOG scalar(localtime) . $dev . "\n";
($dev) = $dev =~ /^\/dev\/(sd[a-z]{1,2})$/;
die unless $dev;
chdir "/sys/block/$dev/device" or die "invalid device $dev";
opendir DEVICE, ".";
while ($_ = readdir DEVICE) {
if (/scsi_device:(\d+):\d+:\d+:\d+$/) {
my $host = $1;
closedir DEVICE;
chdir "/sys/class/scsi_host/host$host" or die "could not find scsi_host";
open PROC, "< proc_name";
$proc = <PROC>;
close PROC;
if ($proc =~ /iscsi_tcp/) {
print "10\n";
#print LOG "10\n";
exit 0;
}
if (-e 'isp_name') {
print "50\n";
#print LOG "50\n";
exit 0;
}
print "20\n";
exit 0;
}
}
closedir DEVICE;
die "could not find scsi_device\n";
--
Rich Graves http://claimid.com/rcgraves
Carleton.edu Sr UNIX and Security Admin
CMC135: 507-646-7079 Cell: 952-292-6529
_______________________________________________
rhelv5-list mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/rhelv5-list
