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Back-end Storage System Fault

The BoostIO distributed cache layer requires the back-end storage system as the large-capacity persistent data storage pool. The methods for troubleshooting the back-end storage system are described as follows.

Table 1 Back-end storage system fault scenarios

Scenario

Impact

Handling Method

Remarks

Back-end storage system fault
  • Object data in the write cache cannot be evicted.
  • The read cache fails to prefetch object data.

Detects faults in the back-end storage system and generates alarms in logs.

None

Back-end storage system recovery
  • The write cache data eviction function is restored.
  • The prefetch function of the read cache is restored.
  • Foreground services are restored.

Recovers and reconnects to the back-end storage system.
  • The recovery of the write cache data eviction function takes a certain period of time, which depends on the back-end storage performance.
  • The recovery of the foreground service performance takes a certain period of time, which depends on the data eviction performance of the write cache.
Parent topic: Troubleshooting