отладить путь ввода-вывода файловой системы XFS (debug the I/O path of an XFS filesystem)
Концепции (Concepts)
xfs_io maintains a number of open files and memory mappings.
Files can be initially opened on the command line (optionally),
and additional files can also be opened later.
xfs_io commands can be broken up into three groups. Some
commands are aimed at doing regular file I/O - read, write, sync,
space preallocation, etc.
The second set of commands exist for manipulating memory mapped
regions of a file - mapping, accessing, storing, unmapping,
flushing, etc.
The remaining commands are for the navigation and display of data
structures relating to the open files, mappings, and the
filesystems where they reside.
Many commands have extensive online help. Use the help command
for more details on any command.
