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@@ -2,7 +2,7 @@
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先确定已经给tunasynctl写好config文件:`~/.config/tunasync/ctl.conf`
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-```
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+```toml
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manager_addr = "127.0.0.1"
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manager_port = 12345
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ca_cert = ""
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@@ -10,7 +10,7 @@ ca_cert = ""
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接着
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-```
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+```shell
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$ tunasynctl disable -w <worker_id> <mirror_name>
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$ tunasynctl flush
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```
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@@ -18,8 +18,9 @@ $ tunasynctl flush
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## 热重载 `worker.conf`
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-`$ tunasynctl reload -w <worker_id>`
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-
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+```shell
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+$ tunasynctl reload -w <worker_id>
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+```
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e.g. 删除 `test_worker` 的 `elvish` 镜像:
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@@ -29,7 +30,7 @@ e.g. 删除 `test_worker` 的 `elvish` 镜像:
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3. 接着操作:
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-```
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+```shell
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$ tunasynctl reload -w test_worker
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$ tunasynctl disable -w test_worker elvish
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$ tunasynctl flush
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@@ -40,15 +41,53 @@ $ tunasynctl flush
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## 删除worker
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-`$ tunasynctl rm-worker -w <worker_id>`
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+```shell
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+$ tunasynctl rm-worker -w <worker_id>
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+```
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-e.g. `$ tunasynctl rm-worker -w test_worker`
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+e.g.
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+
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+```shell
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+$ tunasynctl rm-worker -w test_worker
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+```
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## 更新镜像的大小
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-`$ tunasynctl set-size -w <worker_id> <mirror_name> <size>`
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+```shell
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+$ tunasynctl set-size -w <worker_id> <mirror_name> <size>
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+```
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其中,末尾的 <size> 参数,由操作者设定,或由某定时脚本生成
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由于 `du -s` 比较耗时,故镜像大小可直接由rsync的日志文件读出
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+
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+
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+## Btrfs 文件系统快照
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+
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+如果镜像文件存放在以 Btrfs 为文件系统的分区中,可启用由 Btrfs 提供的快照 (Snapshot) 功能。对于每一个镜像,tunasync 在每次成功同步后更新其快照。
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+
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+在 `worker.conf` 中添加如下配置,即可启用 Btrfs 快照功能:
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+
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+```toml
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+[btrfs_snapshot]
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+enable = true
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+snapshot_path = "/path/to/snapshot/directory"
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+```
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+
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+其中 `snapshot_path` 为快照所在目录。如将其作为发布版本,则镜像同步过程对于镜像站用户而言具有原子性。如此可避免用户接收到仍处于“中间态”的(未完成同步的)文件。
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+
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+也可以在 `[[mirrors]]` 中为特定镜像单独指定快照路径,如:
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+
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+```toml
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+[[mirrors]]
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+name = "elvish"
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+provider = "rsync"
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+upstream = "rsync://rsync.elvish.io/elvish/"
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+interval = 1440
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+snapshot_path = "/data/publish/elvish"
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+```
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+
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+**提示:**
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+
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+若运行 tunasync 的用户无 root 权限,请确保该用户对镜像同步目录和快照目录均具有写和执行权限,并使用 [`user_subvol_rm_allowed` 选项](https://btrfs.wiki.kernel.org/index.php/Manpage/btrfs(5)#MOUNT_OPTIONS)挂载相应的 Btrfs 分区。
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