srs 2.0 logrotate copytruncate generates file holes

[fastfading]

Description'

Please ensure that the markdown structure is maintained.

Describe the problem you encountered here:
srs 2.0 logrotate copytruncate generates file holes

1. SRS version: 2.0
2. SRS log is as follows:
   Please make sure to maintain the markdown structure.

\0\0\0 ....
normal log

Reproduction (Replay)

Please make sure to maintain the markdown structure.

Configure copy truncate in logrotate
When rotate is executed, the next file will have holes.

Refer to fix

d = ::open(filename.c_str(), O_RDWR | O_APPEND); 
if(fd == -1 && errno == ENOENT) { 
fd = open(filename.c_str(), 
O_RDWR | O_CREAT | O_TRUNC | O_APPEND/*logrotate copytruncate need this flag*/, 
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH 
); 
}

refer
https://blog.csdn.net/caomiao2006/article/details/12752359
Expected Behavior
The log file should not have any gaps.

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[winlinvip]

Wiki:

https://github.com/ossrs/srs/wiki/v3_CN_LogRotate#copytruncate
https://github.com/ossrs/srs/wiki/v3_EN_LogRotate#copytruncate

[limjoe]

I deployed version 3.0 of k8s cluster, and on one of the host machines, I used the copytruncate method to rotate logs. However, I encountered the issue of sparse files. Is it possible that version 3.0 release 0 does not support the copytruncate method yet, and currently only version 2.0 supports it?

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