<font size=2 face="Verdana">Dear list,</font>
<br>
<br><font size=2 face="Verdana">we have a relatively new Sun Storage 7310,
where we connect CentOS 5.5 Servers (IBM LS21/LS41 Blades) via Brocade
Switches, 4GBit FC. The Blades boot from SAN via qla2xxx, and have no harddisks
at all. We want them to use multipathing from the very beginning, so /boot
and / are already seen by multipathd. Problem is, that the Sun 7310 has
two storage heads which run in active/passive mode. BUT the multipathd
thinks, they are active/active and therefor shows half the available paths
as faulty (multipath -ll below)</font>
<br><font size=2 face="Verdana">While this probably gives me the redundancy
that is desired, it is a relatively messy situation, since it will be unnecessary
hard to detect real path failures and the OS is complaining about "readsector0
checker reports path is down" which gives me >40M/24h /var/log/messages
garbage.</font>
<br><font size=2 face="Verdana">Any hints for a reasonable configuration?
Unfortunately the Sun 7310 is rather new, so almost nothing shows up on
google... even less for RHEL/CentOS :-(</font>
<br>
<br><font size=2 face="Verdana">regards from Berlin</font>
<br><font size=2 face="Verdana">Jens</font>
<br>
<br><font size=2 face="Verdana">[root@dev-db1 tmp]# multipath -ll</font>
<br><font size=2 face="Verdana">sdaa: checker msg is "readsector0
checker reports path is down"</font>
<br><font size=2 face="Verdana">sdab: checker msg is "readsector0
checker reports path is down"</font>
<br><font size=2 face="Verdana">sdac: checker msg is "readsector0
checker reports path is down"</font>
<br><font size=2 face="Verdana">sdad: checker msg is "readsector0
checker reports path is down"</font>
<br><font size=2 face="Verdana">sdd: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdh: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdl: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdp: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdq: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdr: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sds: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdt: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdu: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdv: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdx: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">sdz: checker msg is "readsector0 checker
reports path is down"</font>
<br><font size=2 face="Verdana">mpath0 (3600144f0fdf58b5c00004bc738070001)
dm-0 SUN,Sun Storage 7310</font>
<br><font size=2 face="Verdana">[size=50G][features=0][hwhandler=0][rw]</font>
<br><font size=2 face="Verdana">\_ round-robin 0 [prio=1][active]</font>
<br><font size=2 face="Verdana"> \_ 0:0:1:0 sda 8:0 [active][ready]
</font>
<br><font size=2 face="Verdana">\_ round-robin 0 [prio=1][enabled]</font>
<br><font size=2 face="Verdana"> \_ 1:0:0:0 sde 8:64
[active][ready] </font>
<br><font size=2 face="Verdana">\_ round-robin 0 [prio=1][enabled]</font>
<br><font size=2 face="Verdana"> \_ 0:0:2:0 sdi 8:128 [active][ready]
</font>
<br><font size=2 face="Verdana">\_ round-robin 0 [prio=1][enabled]</font>
<br><font size=2 face="Verdana"> \_ 1:0:1:0 sdm 8:192 [active][ready]
</font>
<br><font size=2 face="Verdana">\_ round-robin 0 [prio=0][enabled]</font>
<br><font size=2 face="Verdana"> \_ 0:0:3:0 sdq 65:0
[failed][faulty]</font>
<br><font size=2 face="Verdana">\_ round-robin 0 [prio=0][enabled]</font>
<br><font size=2 face="Verdana"> \_ 1:0:2:0 sdr 65:16 [failed][faulty]</font>
<br><font size=2 face="Verdana">\_ round-robin 0 [prio=0][enabled]</font>
<br><font size=2 face="Verdana"> \_ 0:0:4:0 sdx 65:112 [failed][faulty]</font>
<br><font size=2 face="Verdana">\_ round-robin 0 [prio=0][enabled]</font>
<br><font size=2 face="Verdana"> \_ 1:0:3:0 sdz 65:144 [failed][faulty]<br>
</font>