Failure to compile on 3.10.0-693.el7.x86_64 about otel-profiling-agent

[florianl]

hi @ms2008 👋

Thanks for you interest in this project!
Linux Kernel 3.10 is out of scope for this agent. Please make sure to meet the requirements as mentioned in Limitations:

The minimum supported Linux kernel versions are

4.19 for amd64/x86_64

[ms2008]

@florianl Thanks for informing. And I did some digging and found that it should be that my kernel does not have F_OFD_SETLKW etc. It seems that OFD locks are only available since Linux 3.15.

$ strace systemd-sysusers
...
newfstatat(AT_FDCWD, "/etc", {st_mode=S_IFDIR|0755, st_size=230, ...}, 0) = 0
openat(AT_FDCWD, "/etc/.pwd.lock", O_WRONLY|O_CREAT|O_NOCTTY|O_NOFOLLOW|O_CLOEXEC, 0600) = 3
fcntl(3, F_OFD_SETLKW, {l_type=F_WRLCK, l_whence=SEEK_SET, l_start=0, l_len=0}) = -1 EINVAL (Invalid argument)
close(3)