Just throwing this out there for ideas. I keep a log of journal info from a script (sample output below)
raidvchkscan -v jnl
201601180000:JID MU CTG JNLS AP U(%) Q-Marker Q-CNT D-SZ(BLK) Seq# Num LDEV#
201601180000:002 0 0 PJNN 2 0 01347bb3 171 24387072 66620 1 32932
201601180000:003 0 1 PJNN 2 0 35f27a16 72 756487672 66620 9 32794
for several years not I've run this and kept the output with the data/time stamp on the front as you see above.
suddenly today I have a journal that just stopped working with a status of PSUE, yet my script that runs every 15 minutes never saw that status - sounds like a call to HDS is in order.
I've depended on this output to tell me when journals are filling or failing - anyone got a better way they would like to share?