Linux 如何制作根文件系统的 tar 备份？
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How to make a tar backup of a root filesystem?
提问by iabdalkader
I have linux installed on SD card, I used this command to install the rootfs
我在 SD 卡上安装了 linux，我用这个命令来安装 rootfs
tar xpjf rootfs.tar.bz -C /mnt/rootfs/
tar xpjf rootfs.tar.bz -C /mnt/rootfs/
Now, I made some changes to the rootfs and I would like to create a backup that I can use with the same command above, I tried using:
现在，我对 rootfs 进行了一些更改，我想创建一个备份，我可以使用上面相同的命令来使用它，我尝试使用：
tar cpjf rootfs.tar.bz2 /mnt/rootfs
and
tar cpjf rootfs.tar.bz2 -C / mnt/rootfs
I also tried
tar cpjf rootfs.tar.bz2 /mnt/rootfs/*
And tried:
并尝试：
cd /mnt/rootfs
tar -cvpjf rootfs.tar.bz2 --exclude=/rootfs.tar.bz2 .
tar: ./rootfs.tar.bz2: file changed as we read it
but I end up with an archive that has two levels before the file system i.e mnt/rootfs/files What am I doing wrong ?
但我最终得到的档案在文件系统之前有两个级别，即 mnt/rootfs/files 我做错了什么？
采纳答案by alex88
That's because it starts from current working directory, you can do:
那是因为它从当前工作目录开始，您可以执行以下操作：
cd /mnt/rootfs
tar cpjf /rootfs.tar.bz2 .
And that should create an archive at /rootfs.tar.bz2 with its root at the contents of /mnt/rootfs/
这应该在 /rootfs.tar.bz2 中创建一个存档，其根目录位于 /mnt/rootfs/ 的内容中
