Documentation/admin-guide/xfs.rst

1 .. SPDX-License-Identifier: GPL-2.0
8 on the SGI IRIX platform.  It is completely multi-threaded, can
15 for further details.  This implementation is on-disk compatible
25 	Sets the buffered I/O end-of-file preallocation size when
28 	through to 1GiB, inclusive, in power-of-2 increments.
30 	The default behaviour is for dynamic end-of-file
40 	on-disk.  When the new form is used for the first time when
42 	attributes) the on-disk superblock feature bit field will be
45 	The default behaviour is determined by the on-disk feature
116 	Set the number of in-memory log buffers.  Valid numbers
117 	range from 2-8 inclusive.
121 	If the memory cost of 8 log buffers is too high on small
122 	systems, then it may be reduced at some cost to performance
128 	Set the size of each in-memory log buffer.  The size may be
140 	Use an external log (metadata journal) and/or real-time device.
142 	section, and a real-time section.  The real-time section is
149 	with non-zero data alignment parameters (``sunit``, ``swidth``) by
157 	Filesystems mounted ``norecovery`` must be mounted read-only or
164 	read-only snapshots.
184 	or a stripe volume.  "value" must be specified in 512-byte
186 	that were created with non-zero data alignment parameters.
191 	increasing it by a power-of-2 multiple. Valid ``swidth`` values
243 Mounting ascii-ci filesystem    September 2030
278 	references and returns timed-out AGs back to the free stream
323 	If the group ID of the new file does not match the effective group
389  -failure speed:
395  -error classes:
400  -error handlers:
404 error handler works independently - the first condition met by an error handler
409 dependent - it may cause a shut down in the case of an unrecoverable error,
428 		- "metadata": applies metadata buffer write IO
469   max_retries			(Min: -1  Default: Varies  Max: INTMAX)
475 	Setting the value to "-1" will cause XFS to retry forever for this
484   retry_timeout_seconds		(Min:  -1  Default:  Varies  Max: 1 day)
489 	Setting the value to "-1" will allow XFS to retry forever for this
500 "metadata/ENODEV" are "0" rather than "-1" so that this error handler defaults
524   xfs_iwalk-$pid  Inode scans of the entire filesystem. Currently limited to
526   xfs-gc          Background garbage collection of disk space that have been
532 found in /sys/bus/workqueue/devices/xfs_iwalk-1111!nvme0n1/.