What to do when system-redis-storage PV reaches storage capacity on the disk?

2019-08-11T03:04:14.011791307Z 14828:C 11 Aug 03:04:14.011 # Failed opening the RDB file dump.rdb (in server root dir /var/lib/redis/data) for saving: No space left on device
2019-08-11T03:04:14.106083294Z 1:M 11 Aug 03:04:14.105 # Background saving error
2019-08-11T03:04:20.013849518Z 1:M 11 Aug 03:04:20.013 * 10 changes in 300 seconds. Saving...
2019-08-11T03:04:20.013903673Z 1:M 11 Aug 03:04:20.013 * Background saving started by pid 14843
2019-08-11T03:04:20.061742628Z 14843:C 11 Aug 03:04:20.061 * DB saved on disk
2019-08-11T03:04:20.062159671Z 14843:C 11 Aug 03:04:20.062 * RDB: 0 MB of memory used by copy-on-write
2019-08-11T03:04:20.113529513Z 1:M 11 Aug 03:04:20.113 * Background saving terminated with success
2019-08-11T03:09:21.007067907Z 1:M 11 Aug 03:09:21.006 * 10 changes in 300 seconds. Saving...
2019-08-11T03:09:21.007381965Z 1:M 11 Aug 03:09:21.007 * Background saving started by pid 15265
2019-08-11T03:09:21.083291311Z 15265:C 11 Aug 03:09:21.083 # Error moving temp DB file temp-15265.rdb on the final destination dump.rdb (in server root dir /var/lib/redis/data): Transport endpoint is not connected
2019-08-11T03:09:21.10884739Z 1:M 11 Aug 03:09:21.108 # Background saving error