mkfifo命令在clearcase vob上失敗

Question

我想在clearcase的vobs樹（/ vobs/something/something）下創建但未簽入的目錄中創建命名管道。我得到這個錯誤：

"mkfifo: No such device or address" 

我不能理解爲什麼管創建失敗，而其他文件正在創建。 我正在使用Solaris 10.有什麼方法可以在VOB中創建命名管道？

Answer 1

/vobs/something/something表示帶有視圖集的MVFS路徑（如cleartool setview）。

首先，嘗試與fumm路徑相同的操作，而不是嘗試設置視圖。正如我在「Python and ClearCase setview」中所解釋的那樣，設置視圖會創建一個子shell，對您的進程有各種副作用（根據環境變量和其他非干擾屬性）。

因此請在/views/MyView/vobs/something/something試試。

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第二，關於管道，檢查是否this thread applies to your case：

Just off the top of my head if you using a pipe and not a file, then it should be specified something like this ..

destination my_pipe pipe("/data/pipes/net_pipe"); 

rather than

destination my_file file("/data/pipes/net_pipe"); 

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需要注意的是，爲ClearCase up to 7.0.x：

ClearCase does not support adding to source control special files such as named pipes, fifos or device files. There are no type mangers available to manage these special files.

Note: Attempts to execute these files in the MVFS is not supported.

WORKAROUNDS:

• Keep multiple versions of directories with device files outside of a VOB and versioned directories/symlinks in a VOB to point to correct directory location outside the VOB.
• Keep a tar or zip archive of the tree with device files in the VOB, and extract it to a temporary workspace when needed in the development process.