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Reports until 17:56, Monday 30 September 2019
H1 CDS (CDS)
jonathan.hanks@LIGO.ORG - posted 17:56, Monday 30 September 2019 (52219)
Work on WP 8381 (Redundant collection of EPICS data)
To implement WP 8381 I have been setting up a standalone epics recorder on a currently spare daqd box h1nds3.

Work done today:
 * Added 4x2TB disks in a raid5 configuration for 6TB of storage
 * Installed the mbuf and gpstime drivers
   * This machine is not on the site timing system, so the time is system time/ntp based.
 * Built daqd_shmem, local_dc, and standalone_edc from git master.

While the raid is building I am running some tests against simulated data writing to the main (small) disk.

This will be collecting the roughly 40k EPICS channels and recording them locally.

It will be accessed via NDS at h1nds3:8088 (do not use this yet, you will only get simulated channels).

Install notes:
 * all config files for this ad-hoc build are being put in /etc/edcu
 * standalone_edc is run as:
   * standalone_edc -b edc_daq -d 52 -i /etc/edcu/edcu.ini -p H3:
     * write to the edc_daq memory buffer
     * dcuid = 52 to match production edc (meaningless in this situation, but it needs some number)
     * Setting a prefix of H3: to the 3 edcu specific channels (connection count, currently connected channels, currently disconnected channels)
 * local_dc is run as:
   * local_dc -s edc -b ifo -m 64 -d /etc/edcu
     * read from the edc_daq buffer and place in the the ifo output buffer which is 64MB, config is in /etc/edcu
 * daqd_shmem is run as:
   * daqd_shmem -c /etc/edcu/daqdrc
     * configured to read data from the ifo buffer with a size of 64MB

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