prints the log of an XFS filesystem (see
argument is the pathname of the partition or logical volume
containing the filesystem. The
can be a regular file if the
option is used. The contents of the filesystem remain undisturbed.
There are two major modes of operation in
One mode is better for filesystem operation debugging.
It is called the transactional view and is enabled through the
option. The transactional view prints only the portion of the log that
pertains to recovery. In other words, it prints out complete transactions
between the tail and the head. This view tries to display each transaction
without regard to how they are split across log records.
The second mode starts printing out information from the beginning of the log.
Some error blocks might print out in the beginning because the last log
record usually overlaps the oldest log record. A message is
printed when the physical end of the log is reached and when the
logical end of the log is reached. A log record view is displayed
one record at a time. Transactions that span log records may not be
Extract and print buffer information. Only used in transactional view.
Attempt to continue when an error is detected.
Copy the log from the filesystem to the file
The log itself is not printed.
Dump the log from front to end, printing where each log record is located
Do not decode anything; just print data.
Exit when an error is found in the log. Normally,
tries to continue and unwind from bad logs.
However, sometimes it just dies in bad ways.
Using this option prevents core dumps.
Specifies that the filesystem image to be processed is stored in a
regular file at
This might happen if an image copy of a filesystem has been made into
an ordinary file with
External log device. Only for those filesystems which use an external log.
Extract and print inode information. Only used in transactional view.
Extract and print quota information. Only used in transactional view.
Do not try and interpret log data; just interpret log header information.
Also print buffer data in hex.
Normally, buffer data is just decoded, so better information can be printed.