I've started the process of archiving the raw minute trend files from h1tw1 as its SSD-RAID is 87% full.
The first part of this procedure is to archive the minute_raw directory on h1tw1 as minute_raw_1179862578 and create a new empty minute_raw within the five minute quiet period when h1tw1 is not writing minute trends. This permitted the archival to be done without stopping and restarting the raw minute trender.
Then h1nds1 and h1nds0's daqdrc files were temporarily modified to read the past 140 days of minute trends from h1tw1's archive directory. This requires a restart of the daqd processes on these machines:
| h1nds1 | restart 12:54 PDT |
| h1nds0 | restart 13:02 PDT |
I verified that last day's minute trends are now being read by h1nds1 from the online and archived minute_raw directories on h1tw1.
The next step in the process is to copy all the files from h1tw1 /trend/minute_raw_1179862578 over to the MSR SATABOY using h1fw1. This is done using a low priority flag, so as not to interfere with h1fw1's frame writing. It is a slow process, taking about 3 days. This allows he wiper script to keep the SATABOY RAID from filling.