[rrd-users] rrd problem

[Canhua]

hi all,

I create a rrd, the info is as follows:
_______________________________________
filename = "mailrelay1.rrd"
rrd_version = "0003"
step = 300
last_update = 1272293941
ds[p0].type = "COUNTER"
ds[p0].minimal_heartbeat = 600
ds[p0].min = 0.0000000000e+00
ds[p0].max = NaN
ds[p0].last_ds = "0"
ds[p0].value = 0.0000000000e+00
ds[p0].unknown_sec = 241
ds[p1].type = "COUNTER"
ds[p1].minimal_heartbeat = 600
ds[p1].min = 0.0000000000e+00
ds[p1].max = NaN
ds[p1].last_ds = "0"
ds[p1].value = 0.0000000000e+00
ds[p1].unknown_sec = 241
ds[p2].type = "COUNTER"
ds[p2].minimal_heartbeat = 600
ds[p2].min = 0.0000000000e+00
ds[p2].max = NaN
ds[p2].last_ds = "0"
ds[p2].value = 0.0000000000e+00
ds[p2].unknown_sec = 241
ds[p3].type = "COUNTER"
ds[p3].minimal_heartbeat = 600
ds[p3].min = 0.0000000000e+00
ds[p3].max = NaN
ds[p3].last_ds = "0"
ds[p3].value = 0.0000000000e+00
ds[p3].unknown_sec = 241
ds[p4].type = "COUNTER"
ds[p4].minimal_heartbeat = 600
ds[p4].min = 0.0000000000e+00
ds[p4].max = NaN
ds[p4].last_ds = "0"
ds[p4].value = 0.0000000000e+00
ds[p4].unknown_sec = 241
ds[p5].type = "COUNTER"
ds[p5].minimal_heartbeat = 600
ds[p5].min = 0.0000000000e+00
ds[p5].max = NaN
ds[p5].last_ds = "0"
ds[p5].value = 0.0000000000e+00
ds[p5].unknown_sec = 241
ds[p6].type = "COUNTER"
ds[p6].minimal_heartbeat = 600
ds[p6].min = 0.0000000000e+00
ds[p6].max = NaN
ds[p6].last_ds = "1462"
ds[p6].value = 0.0000000000e+00
ds[p6].unknown_sec = 241
ds[p7].type = "COUNTER"
ds[p7].minimal_heartbeat = 600
ds[p7].min = 0.0000000000e+00
ds[p7].max = NaN
ds[p7].last_ds = "2191202"
ds[p7].value = 0.0000000000e+00
ds[p7].unknown_sec = 241
rra[0].cf = "AVERAGE"
rra[0].rows = 28800
rra[0].cur_row = 3697
rra[0].pdp_per_row = 1
rra[0].xff = 5.0000000000e-01
rra[0].cdp_prep[0].value = NaN
rra[0].cdp_prep[0].unknown_datapoints = 0
rra[0].cdp_prep[1].value = NaN
rra[0].cdp_prep[1].unknown_datapoints = 0
rra[0].cdp_prep[2].value = NaN
rra[0].cdp_prep[2].unknown_datapoints = 0
rra[0].cdp_prep[3].value = NaN
rra[0].cdp_prep[3].unknown_datapoints = 0
rra[0].cdp_prep[4].value = NaN
rra[0].cdp_prep[4].unknown_datapoints = 0
rra[0].cdp_prep[5].value = NaN
rra[0].cdp_prep[5].unknown_datapoints = 0
rra[0].cdp_prep[6].value = NaN
rra[0].cdp_prep[6].unknown_datapoints = 0
rra[0].cdp_prep[7].value = NaN
rra[0].cdp_prep[7].unknown_datapoints = 0
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as you can see the step is 300 seconds, and I update the rrd every minute,
but I get NaN when I "fetch" from the rrd

Can some guy help me find out the problem?
Thank you !!