+- - - - -
+
+If you see backups failing with an error like:
+
+ driver: FATAL flush line 1: syntax error (skipping != FLUSH)
+
+The problem may be that some versions of Amanda around 2.5.2 are not
+happy if there are unexpected contents in the holdingdisk you have
+defined on the server. This can occur, for example, if you are using
+the mount point of a separate filesystem that contains a lost+found
+directory. The quick fix is to create a subdirectory in that partition
+for Amanda to use that will have no such unexpected contents. For more
+info on this issue see:
+
+ http://forums.zmanda.com/archive/index.php/t-591.html
+
+- - - - -
+
+If you see things like this in dmesg:
+
+ INFO: task ammt:9839 blocked for more than 120 seconds.
+ "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
+
+This information from Marc Schaefer may relevant:
+
+> AFAIK it's because mtio operations are done in D state (uninterruptible
+> sleep).
+>
+> And except for mtio operations which may last more than two minutes,
+> nothing in the usual kernel operation will last that long.
+>
+> Solutions:
+> - either fix mtio to be interruptible (which may well cause problems
+> because e.g. SCSI reselection might happen later)
+> - use the proposed work-around
+> - ignore those messages in your logcheck.
+