From c811f7fb0265a7c05b1a33fcceaee2fbc02d664c Mon Sep 17 00:00:00 2001 From: Alex Yatskov Date: Mon, 6 Jul 2015 15:59:37 +0900 Subject: [PATCH] Updating README --- README.md | 41 ++++++++++++++++++++++------------------- 1 file changed, 22 insertions(+), 19 deletions(-) diff --git a/README.md b/README.md index c91b9d6..6372644 100644 --- a/README.md +++ b/README.md @@ -75,7 +75,8 @@ empty directory is a valid empty version database and mount points should by alw directories (`db` for the database and `mp` for the mount point). ``` -alex@wintermute ~/vfs> mkdir db mp; ls +$ mkdir db mp +$ ls db/ mp/ ``` @@ -83,30 +84,27 @@ Now let's mount the empty database directory `db` onto our mount point `mp` (not group or `root` in order for this to work): ``` -alex@wintermute ~/vfs> vfs db mp +$ vfs db mp ``` Using a new terminal window, let's create some files and directories: ``` -alex@wintermute ~/vfs> echo hello > mp/greeting.txt; mkdir mp/pizza; touch mp/pizza/pepperoni mp/pizza/cheese; ls -R mp -mp: -greeting.txt pizza/ - -mp/pizza: -cheese pepperoni +$ echo hello > mp/greeting.txt +$ mkdir mp/pizza +$ touch mp/pizza/pepperoni mp/pizza/cheese ``` Now that we are finished working with this version, let's unmount it: ``` -alex@wintermute ~/vfs> fusermount -u mp +$ fusermount -u mp ``` Let's take a look at the version structure that VFS has created in the database directory: ``` -alex@wintermute ~/vfs> ls -R db +$ ls -R db db: ver_00000000559a17e4/ @@ -129,20 +127,23 @@ Some points of interest about this structure: Let's continue our walkthrough by mounting the now non-empty database once more: ``` -alex@wintermute ~/vfs> vfs db mp +$ vfs db mp ``` Now let's make a couple of changes to the files and directory structure: ``` -echo こんにちは > mp/greeting.txt; rm mp/pizza/pepperoni; touch mp/pizza/bacon +$ echo こんにちは > mp/greeting.txt +$ rm mp/pizza/pepperoni +$ touch mp/pizza/bacon ``` ...and verify that everything is as it should be; looks good so far! ``` -alex@wintermute ~/vfs> cat mp/greeting.txt; ls -R mp +$ cat mp/greeting.txt こんにちは +$ ls -R mp mp: greeting.txt pizza/ @@ -153,7 +154,8 @@ bacon cheese Now let's unmount and examine at the contents of the database directory: ``` -alex@wintermute ~/vfs> fusermount -u mp; ls -l db +$ fusermount -u mp +$ ls -l db total 8 drwxr-xr-x 3 alex alex 4096 Jul 6 14:58 ver_00000000559a17e4/ drwxr-xr-x 3 alex alex 4096 Jul 6 15:08 ver_00000000559a19b4/ @@ -162,7 +164,7 @@ drwxr-xr-x 3 alex alex 4096 Jul 6 15:08 ver_00000000559a19b4/ Cool, we have a new version! Let's take a closer look at its structure: ``` -alex@wintermute ~/vfs> ls -R db/ver_00000000559a19b4/ +$ ls -R db/ver_00000000559a19b4/ db/ver_00000000559a19b4/: meta.json root/ @@ -178,14 +180,14 @@ respectively. Notice that `cheese` is not listed; we didn't make any changes to version is used. If we look at the contents of `meta.json`, we will see that the `pepperoni` file was deleted: ``` -alex@wintermute ~/vfs> cat db/ver_00000000559a19b4/meta.json +$ cat db/ver_00000000559a19b4/meta.json {"deleted":["/pizza/pepperoni"]} ``` Now let's examine the database from VFS tool directly: ``` -alex@wintermute ~/vfs> vfs db +$ vfs db version: 1 time: 2015-07-06 14:53:40 +0900 JST version: 2 time: 2015-07-06 15:01:24 +0900 JST ``` @@ -194,14 +196,15 @@ Finally, let's mount the version that we created in the beginning of this walkth `version` parameter... ``` -alex@wintermute ~/vfs> vfs -version=1 db mp +$ vfs -version=1 db mp ``` ...and in a different terminal verify its contents; they are identical to the first version! ``` -alex@wintermute ~/vfs> cat mp/greeting.txt; ls -R mp +$ cat mp/greeting.txt Hello +$ ls -R mp mp: greeting.txt pizza/