generation file groups are changed to enable further reading of journal blocks. file type: aaaa (xx...xx), from: bb...bb, cc...cc, to: dd...dd, ee...ee, read direction: g

aaaa: Type of journal file. (Up to four alphanumeric characters)

sys: System journal file

jar: Archive journal file

xx...xx: Resource group name

bb...bb: File group name before the change. (Up to eight characters)

cc...cc: Generation number before the change. (Up to eight hexadecimal numbers)

dd...dd: File group name after the change. (Up to eight characters)

ee...ee: Generation number after the change. (Up to eight hexadecimal numbers)

g: Read direction of the journal blocks

f: Forward

b: Reverse