1What: /sys/fs/xfs/<disk>/log/log_head_lsn 2Date: July 2014 3KernelVersion: 3.17 4Contact: linux-xfs@vger.kernel.org 5Description: 6 The log sequence number (LSN) of the current head of the 7 log. The LSN is exported in "cycle:basic block" format. 8Users: xfstests 9 10What: /sys/fs/xfs/<disk>/log/log_tail_lsn 11Date: July 2014 12KernelVersion: 3.17 13Contact: linux-xfs@vger.kernel.org 14Description: 15 The log sequence number (LSN) of the current tail of the 16 log. The LSN is exported in "cycle:basic block" format. 17 18What: /sys/fs/xfs/<disk>/log/reserve_grant_head_bytes 19Date: June 2024 20KernelVersion: 6.11 21Contact: linux-xfs@vger.kernel.org 22Description: 23 The current state of the log reserve grant head. It 24 represents the total log reservation of all currently 25 outstanding transactions in bytes. 26Users: xfstests 27 28What: /sys/fs/xfs/<disk>/log/write_grant_head_bytes 29Date: June 2024 30KernelVersion: 6.11 31Contact: linux-xfs@vger.kernel.org 32Description: 33 The current state of the log write grant head. It 34 represents the total log reservation of all currently 35 outstanding transactions, including regrants due to 36 rolling transactions in bytes. 37Users: xfstests 38