最后查到问题：新电脑上有 DLP 数据防泄漏软件，阻止了这种类型的同步。

E 2021/10/10 08:49:07 sync.go:381: copy encrypted data dir from [D:\Project\SiYuan2\incremental\sync-encrypt] to sync dir [D:\Project\SiYuan2\sync] failed: 0 [main] rsync (3896) D:\Project\SiYuan2\temp\rsync\bin\rsync.exe: *** fatal error - cygheap base mismatch detected - 0x1097408/0xFF7408.
This problem is probably due to using incompatible versions of the cygwin DLL.
Search for cygwin1.dll using the Windows Start->Find/Search facility
and delete all but the most recent version. The most recent version should
reside in x:\cygwin\bin, where 'x' is the drive on which you have
installed the cygwin distribution. Rebooting is also suggested if you
are unable to find another cygwin DLL.
0 [main] rsync 376 dofork: child -1 - forked process 3896 died unexpectedly, retry 0, exit code 0xC0000142, errno 11
rsync: [sender] fork: Resource temporarily unavailable (11)
rsync error: error in IPC code (code 14) at pipe.c(127) [sender=3.2.4dev]

换到 D 盘也是同样错误 😂

我也同步失败