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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | COLOPHON |
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xfs_logprint(8) System Manager's Manual xfs_logprint(8)
xfs_logprint - print the log of an XFS filesystem
xfs_logprint [ options ] device
xfs_logprint prints the log of an XFS filesystem (see xfs(5)).
The device argument is the pathname of the partition or logical
volume containing the filesystem. The device can be a regular
file if the -f option is used. The contents of the filesystem
remain undisturbed. There are two major modes of operation in
xfs_logprint.
One mode is better for filesystem operation debugging. It is
called the transactional view and is enabled through the -t
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 decoded fully.
-b Extract and print buffer information. Only used in
transactional view.
-c Attempt to continue when an error is detected.
-C filename
Copy the log from the filesystem to the file filename.
The log itself is not printed.
-d Dump the log from front to end, printing where each log
record is located on disk.
-D Do not decode anything; just print data.
-e Exit when an error is found in the log. Normally,
xfs_logprint tries to continue and unwind from bad logs.
However, sometimes it just dies in bad ways. Using this
option prevents core dumps.
-f Specifies that the filesystem image to be processed is
stored in a regular file at device (see the mkfs.xfs(8) -d
file option). This might happen if an image copy of a
filesystem has been made into an ordinary file with
xfs_copy(8).
-l logdev
External log device. Only for those filesystems which use
an external log.
-i Extract and print inode information. Only used in
transactional view.
-q Extract and print quota information. Only used in
transactional view.
-n Do not try and interpret log data; just interpret log
header information.
-o Also print buffer data in hex. Normally, buffer data is
just decoded, so better information can be printed.
-s start-block
Override any notion of where to start printing.
-t Print out the transactional view.
-v Print "overwrite" data.
-V Prints the version number and exits.
mkfs.xfs(8), mount(8).
This page is part of the xfsprogs (utilities for XFS filesystems)
project. Information about the project can be found at
⟨http://xfs.org/⟩. If you have a bug report for this manual page,
send it to [email protected]. This page was obtained
from the project's upstream Git repository
⟨https://git.kernel.org/pub/scm/fs/xfs/xfsprogs-dev.git⟩ on
2024-06-14. (At that time, the date of the most recent commit
that was found in the repository was 2024-05-17.) If you
discover any rendering problems in this HTML version of the page,
or you believe there is a better or more up-to-date source for
the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original
manual page), send a mail to [email protected]
xfs_logprint(8)
Pages that refer to this page: xfs_db(8)
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HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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