Let's get rid of db1048 and setup a substitute for a phabricator slave
db1048 is lagging behind:
Seconds_Behind_Master: 7026
The reason for it looks like a faulty BBU which has changed the RAID policy to WriteThrough
root@db1048:~# megacli -ldinfo -l0 -a0 | grep Policy Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAheadNone, Direct, No Write Cache if Bad BBU
root@db1048:~# megacli -AdpBbuCmd -a0 BBU status for Adapter: 0 BatteryType: BBU Voltage: 4025 mV Current: 0 mA Temperature: 32 C Battery State: Degraded(Need Attention) A manual learn is required. Discharging : Yes Relative State of Charge: 31 % Absolute State of charge: 3 %