Quelle  sysfs-fs-xfs

What:  /sys/fs/xfs/<disk>/log/log_head_lsn
Date:  July 2014
KernelVersion: 3.17
Contact: linux-xfs@vger.kernel.org
Description:
  The log sequence number (LSN) of the current head of the
  log. The LSN is exported in "cycle:basic block" format.
Users:  xfstests

What:  /sys/fs/xfs/<disk>/log/log_tail_lsn
Date:  July 2014
KernelVersion: 3.17
Contact: linux-xfs@vger.kernel.org
Description:
  The log sequence number (LSN) of the current tail of the
  log. The LSN is exported in "cycle:basic block" format.

What:  /sys/fs/xfs/<disk>/log/reserve_grant_head_bytes
Date:  June 2024
KernelVersion: 6.11
Contact: linux-xfs@vger.kernel.org
Description:
  The current state of the log reserve grant head. It
  represents the total log reservation of all currently
  outstanding transactions in bytes.
Users:  xfstests

What:  /sys/fs/xfs/<disk>/log/write_grant_head_bytes
Date:  June 2024
KernelVersion: 6.11
Contact: linux-xfs@vger.kernel.org
Description:
  The current state of the log write grant head. It
  represents the total log reservation of all currently
  outstanding transactions, including regrants due to
  rolling transactions in bytes.
Users:  xfstests