406d8cb029
Previously, when the stdout of a spawned process (e.g. dmi_memory_id) is truncated, the event source was not re-enabled, that will cause the process to remain in a write-blocked state if the stdout buffer is full, and the process will time out: ``` Spawned process 'dmi_memory_id' [1116] timed out after 2min 59s, killing. Process 'dmi_memory_id' terminated by signal KILL. ``` The solution is to continue enabling the event source so that on_spawn_io() can continue reading the stdout buffer. When the result buffer is full, the local `buf` variable will be used to drain remaining stdout. Co-authored-by: Deli Zhang <deli.zhang@cloud.com>
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