![与远程服务器 rsync 导致媒体播放器出现问题](https://linux22.com/image/1345306/%E4%B8%8E%E8%BF%9C%E7%A8%8B%E6%9C%8D%E5%8A%A1%E5%99%A8%20rsync%20%E5%AF%BC%E8%87%B4%E5%AA%92%E4%BD%93%E6%92%AD%E6%94%BE%E5%99%A8%E5%87%BA%E7%8E%B0%E9%97%AE%E9%A2%98.png)
我有一个运行 Serviio 作为 DLNA 媒体服务器的 ubuntu 服务器。
服务器所做的其他事情几乎就是检查远程服务器上的新媒体。我每分钟都会使用 cron 运行此脚本。
#!/bin/bash
DestDir='/home/vince/media'
lockfile='/home/vince/cron/sync.lock'
if [ ! -e $lockfile ]; then
trap "rm -f $lockfile; exit" INT TERM EXIT
touch $lockfile
nice -n 20 ionice -c 3 rsync -axvmP --rsh="ssh -c arcfour" --progress --delete --include='*/' --include='*.mkv' --include='*.mp4' --include='*.avi' --exclude='*' --log-file='/home/vince/log/sync' ***@***:/home/vince/media/ "$DestDir"
rm $lockfile
trap - INT TERM EXIT
[ $? -eq 0 ] && logger 'RSYNC sync completed successfully' || logger 'RSYNC sync Failed'
else
echo "script already running"
fi
你看,我使用了更弱的密码,nice 和 ionice,但是如果 rsync 找到一个 6GB 的文件,而我当时正在流式传输媒体,它会导致播放缓冲和跳转。
如果我将此脚本移动到远程服务器并推送数据而不是拉取数据,这会有帮助吗?还是没有什么区别?
还有其他建议吗?
答案1
如果问题出在带宽上,那么请检查 rsync 的选项,例如:
--bwlimit=KBPS
This option allows you to specify a maximum transfer rate in
kilobytes per second for the data the daemon sends. The client
can still specify a smaller --bwlimit value, but their requested
value will be rounded down if they try to exceed it. See the
client version of this option (above) for some extra details.
根据打嗝的原因,也许有以下几种情况:
-z, --compress
With this option, rsync compresses the file data as it is sent
to the destination machine, which reduces the amount of data
being transmitted â something that is useful over a slow connecâ
tion.
Note that this option typically achieves better compression
ratios than can be achieved by using a compressing remote shell
or a compressing transport because it takes advantage of the
implicit information in the matching data blocks that are not
explicitly sent over the connection.
See the --skip-compress option for the default list of file sufâ
fixes that will not be compressed.
--compress-level=NUM
Explicitly set the compression level to use (see --compress)
instead of letting it default. If NUM is non-zero, the --comâ
press option is implied.
--skip-compress=LIST
Override the list of file suffixes that will not be compressed.
The LIST should be one or more file suffixes (without the dot)
separated by slashes (/).
You may specify an empty string to indicate that no file should
be skipped.
Simple character-class matching is supported: each must consist
of a list of letters inside the square brackets (e.g. no special
classes, such as â[:alpha:]â
The characters asterisk (*) and question-mark (?) have no speâ
cial meaning.
Here's an example that specifies 6 suffixes to skip (since 1 of
the 5 rules matches 2 suffixes):
--skip-compress=gz/jpg/mp[34]/7z/bz2
The default list of suffixes that will not be compressed is this
(several of these are newly added for 3.0.0):
gz/zip/z/rpm/deb/iso/bz2/t[gb]z/7z/mp[34]/mov/avi/ogg/jpg/jpeg
This list will be replaced by your --skip-compress list in all
but one situation: a copy from a daemon rsync will add your
skipped suffixes to its list of non-compressing files (and its
list may be configured to a different default).