fixes

source/talk.tex

@@ -30,7 +30,8 @@
     \item The disk may be damaged by vibrations during the daily commute.
     \item The computer where you keep the unique copy of your thesis
     may be stolen.
-    \item Or after some time it may simply age and stop operating.
+    \item After some time the disk may simply stop operating because of ageing.
+    \item But often the principal cause of data loss is that thing that it is between the keyboard and the chair.
   \end{itemize}
 \end{frame}
 
@@ -117,7 +118,7 @@
 
 \begin{frame}
   \frametitle{GNU ddrescue}
-  gdrescue is an enhanced version of dd that tries to rescue good parts in case of read errors. It may be usefull to recover data from a drive with some damaged sector.\\
+  gdrescue is an enhanced version of dd that tries to rescue good parts in case of read errors. It may be useful to recover data from a drive with some damaged sector.\\
   Usage Example:
   \begin{itemize}
     \item \textit{ddrescue [options] /dev/sdX outfile mapfile}
@@ -156,7 +157,7 @@
     \item rsync -Pr source destination
     \begin{itemize}
       \item \textbf{P:} keep partially transferred files if the transfer is interrupted.
-      \item \textbf{r:} recursive directory option
+      \item \textbf{r:} recursive directory option.
     \end{itemize}
     \vfill
     \pause
@@ -166,7 +167,7 @@
     \end{itemize}
     \vfill
     \pause
-    \item rsync -aAXv --exclude={...} /* /backup folder
+    \item rsync -aAXv --exclude=\{...\} /* /backup folder
     \begin{itemize}
       \item backup /* while following symlinks and preserving file properties.
     \end{itemize}
@@ -290,15 +291,15 @@
 
 \begin{frame}
   \frametitle{Problems}
-  RAID can help in the event of a disk failure, but it doesn't protect us against \textbf{Silent Data Corruption}\\\pause
+  RAID can help in the event of a disk failure, but it doesn't protect us against \textbf{Silent Data Corruption}.\\\pause
   To address this problem new generation filesystems like ZFS or Btrfs have been created. Classical features that we can find in this kind of filesystems are:
   \begin{itemize}
-      \item CopyOnWrite
-      \item Deduplication
-      \item Data \& Metadata checksums
-      \item Integrated RAID
-      \item Volume Management
-      \item Snapshots
+      \item CopyOnWrite.
+      \item Deduplication.
+      \item Data \& Metadata checksums.
+      \item Integrated RAID.
+      \item Volume Management.
+      \item Snapshots.
   \end{itemize}
 \end{frame}