hi,
I've a question about multipath.
One server uses this configuration:
mpath02 (3600d000ff0d510cae5b8df4d01000000) dm-2 FSC,FibraCAT_SX
[features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=1][active]
\_ 0:0:3:2 sdq 8:64 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 1:0:2:2 sdw 8:160 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 1:0:5:2 sde 65:16 [active][ready]
\_ round-robin 0 [prio=1][enabled]
\_ 0:0:7:2 sdt 65:128 [active][ready]
iostat report 90%-100% busy on sdq.
sdq 248.26 0.00 870.65 0.00 210228.86 0.00 241.46 1.56 1.79 1.01 88.11
sdq 281.00 0.00 964.50 25.50 236000.00 592.00 238.98 4.71 4.73 1.00 99.15
I think that a config like this:
mpath02 (3600d000ff0d510cae5b8df4d01000000) dm-2 FSC,FibraCAT_SX
[features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=10][active]
\_ 0:0:3:2 sdq 8:64 [active][ready]
\_ 1:0:2:2 sdw 8:160 [active][ready]
\_ round-robin 0 [prio=50][enabled]
\_ 1:0:5:2 sde 65:16 [active][ready]
\_ 0:0:7:2 sdt 65:128 [active][ready]
is better.
What do you thinks?