FM / log

/sys/fs/xfs/vda4/log

Name	Size	Mode	Actions
log_head_lsn	4096	0444	edit dl rm
log_tail_lsn	4096	0444	edit dl rm
reserve_grant_head	4096	0444	edit dl rm
write_grant_head	4096	0444	edit dl rm

Edit: /sys/fs/xfs/vda4/log/log_tail_lsn (4096B)

535:13679