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@@ -368,6 +368,13 @@ using ``nfs=nostale_ro``. Doing so implies mounting the filesystem read-only.
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Another option is to not consider inode numbers in the files cache by passing
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``--files-cache=ctime,size``.
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+Why are backups slow on a Linux server that is a member of a Windows domain?
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+----------------------------------------------------------------------------
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+
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+If a Linux server is a member of a Windows domain, username to userid resolution might be
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+performed via ``winbind`` without caching, which can slow down backups significantly.
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+You can use e.g. ``nscd`` to add caching and improve the speed.
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+
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Security
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########
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infectormp