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1. nixCraft 🐧 (nixcraft@mastodon.social)'s status on Tuesday, 10-Oct-2023 00:07:55 JST nixCraft 🐧

   If you have two disks, namely /dev/sdvc and /dev/sdvd, and you want to make a replica of all the data stored only in /data/ directory using XFS, which Linux tool would you prefer and why? It's important to note that the disk sizes are different, and I don't need any other unnecessary data except /data/, which contains soft and hard links, regular files, and other special device files.

   a) dd
   b) rsync
   c) tar
   d) other

   • nixCraft 🐧 (nixcraft@mastodon.social)'s status on Tuesday, 10-Oct-2023 00:10:36 JST nixCraft 🐧

     in reply to

     • Jef

     @jfbucas Not billions but at least 50-100k files.

   • Jef (jfbucas@mastodon.dias.ie)'s status on Tuesday, 10-Oct-2023 00:10:37 JST Jef

     in reply to

     @nixCraft Usually rsync. But there might be some context where dd is more appropriate. Eg: if /data contains billions of files.

   • Derek Otto (dot0@mastodon.social)'s status on Tuesday, 10-Oct-2023 00:26:49 JST Derek Otto

     in reply to

     @nixCraft I'd go with rsync, since XFS really doesn't like mounting two filesystems with the same uuid, which is what you would get with dd