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與遠端伺服器同步導致媒體播放器問題

tag-icon • tag-icon linux ubuntu bash rsync
與遠端伺服器同步導致媒體播放器問題

我有一台運行 Serviio 的 ubuntu 伺服器作為 DLNA 媒體伺服器。

伺服器正在做的唯一一件事就是檢查遠端伺服器上的新媒體。我每分鐘都用 cron 運行這個腳本。

#!/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，我使用了較弱的密碼，nice 和 ionice，但是如果 rsync 找到一個不錯的 6GB 文件，並且我當時正在流媒體，它將導致播放緩衝和跳轉。

如果我將此腳本移至遠端伺服器並將資料推出而不是拉出它會有幫助嗎？還是沒有什麼差別？

還有其他建議嗎？

答案1

如果問題是頻寬之一，請檢查 rsync 的選項，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.

根據打嗝的原因，也許：

   -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).

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