1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 config XFS_FS 2 config XFS_FS
3 tristate "XFS filesystem support" 3 tristate "XFS filesystem support"
4 depends on BLOCK 4 depends on BLOCK
5 select EXPORTFS 5 select EXPORTFS
6 select LIBCRC32C 6 select LIBCRC32C
7 select FS_IOMAP 7 select FS_IOMAP
8 help 8 help
9 XFS is a high performance journaling 9 XFS is a high performance journaling filesystem which originated
10 on the SGI IRIX platform. It is com 10 on the SGI IRIX platform. It is completely multi-threaded, can
11 support large files and large filesy 11 support large files and large filesystems, extended attributes,
12 variable block sizes, is extent base 12 variable block sizes, is extent based, and makes extensive use of
13 Btrees (directories, extents, free s 13 Btrees (directories, extents, free space) to aid both performance
14 and scalability. 14 and scalability.
15 15
16 Refer to the documentation at <http: 16 Refer to the documentation at <http://oss.sgi.com/projects/xfs/>
17 for complete details. This implemen 17 for complete details. This implementation is on-disk compatible
18 with the IRIX version of XFS. 18 with the IRIX version of XFS.
19 19
20 To compile this file system support 20 To compile this file system support as a module, choose M here: the
21 module will be called xfs. Be aware 21 module will be called xfs. Be aware, however, that if the file
22 system of your root partition is com 22 system of your root partition is compiled as a module, you'll need
23 to use an initial ramdisk (initrd) t 23 to use an initial ramdisk (initrd) to boot.
24 24
25 config XFS_SUPPORT_V4 25 config XFS_SUPPORT_V4
26 bool "Support deprecated V4 (crc=0) fo 26 bool "Support deprecated V4 (crc=0) format"
27 depends on XFS_FS 27 depends on XFS_FS
28 default y 28 default y
29 help 29 help
30 The V4 filesystem format lacks certa 30 The V4 filesystem format lacks certain features that are supported
31 by the V5 format, such as metadata c 31 by the V5 format, such as metadata checksumming, strengthened
32 metadata verification, and the abili 32 metadata verification, and the ability to store timestamps past the
33 year 2038. Because of this, the V4 33 year 2038. Because of this, the V4 format is deprecated. All users
34 should upgrade by backing up their f 34 should upgrade by backing up their files, reformatting, and restoring
35 from the backup. 35 from the backup.
36 36
37 Administrators and users can detect 37 Administrators and users can detect a V4 filesystem by running
38 xfs_info against a filesystem mountp 38 xfs_info against a filesystem mountpoint and checking for a string
39 beginning with "crc=". If the strin 39 beginning with "crc=". If the string "crc=0" is found, the
40 filesystem is a V4 filesystem. If n 40 filesystem is a V4 filesystem. If no such string is found, please
41 upgrade xfsprogs to the latest versi 41 upgrade xfsprogs to the latest version and try again.
42 42
43 This option will become default N in 43 This option will become default N in September 2025. Support for the
44 V4 format will be removed entirely i 44 V4 format will be removed entirely in September 2030. Distributors
45 can say N here to withdraw support e 45 can say N here to withdraw support earlier.
46 46
47 To continue supporting the old V4 fo 47 To continue supporting the old V4 format (crc=0), say Y.
48 To close off an attack surface, say 48 To close off an attack surface, say N.
49 49
50 config XFS_SUPPORT_ASCII_CI <<
51 bool "Support deprecated case-insensit <<
52 depends on XFS_FS <<
53 default y <<
54 help <<
55 The ASCII case insensitivity filesys <<
56 on systems that have been coerced in <<
57 not work on extended attributes. Th <<
58 the locale settings in userspace, so <<
59 Enabling this feature makes XFS vuln <<
60 attacks. Because of this, the featu <<
61 should upgrade by backing up their f <<
62 from the backup. <<
63 <<
64 Administrators and users can detect <<
65 xfs_info against a filesystem mountp <<
66 beginning with "ascii-ci=". If the <<
67 filesystem is a case-insensitive fil <<
68 found, please upgrade xfsprogs to th <<
69 <<
70 This option will become default N in <<
71 feature will be removed entirely in <<
72 can say N here to withdraw support e <<
73 <<
74 To continue supporting case-insensit <<
75 To close off an attack surface, say <<
76 <<
77 config XFS_QUOTA 50 config XFS_QUOTA
78 bool "XFS Quota support" 51 bool "XFS Quota support"
79 depends on XFS_FS 52 depends on XFS_FS
80 select QUOTACTL 53 select QUOTACTL
81 help 54 help
82 If you say Y here, you will be able 55 If you say Y here, you will be able to set limits for disk usage on
83 a per user and/or a per group basis 56 a per user and/or a per group basis under XFS. XFS considers quota
84 information as filesystem metadata a 57 information as filesystem metadata and uses journaling to provide a
85 higher level guarantee of consistenc 58 higher level guarantee of consistency. The on-disk data format for
86 quota is also compatible with the IR 59 quota is also compatible with the IRIX version of XFS, allowing a
87 filesystem to be migrated between Li 60 filesystem to be migrated between Linux and IRIX without any need
88 for conversion. 61 for conversion.
89 62
90 If unsure, say N. More comprehensiv 63 If unsure, say N. More comprehensive documentation can be found in
91 README.quota in the xfsprogs package 64 README.quota in the xfsprogs package. XFS quota can be used either
92 with or without the generic quota su 65 with or without the generic quota support enabled (CONFIG_QUOTA) -
93 they are completely independent subs 66 they are completely independent subsystems.
94 67
95 config XFS_POSIX_ACL 68 config XFS_POSIX_ACL
96 bool "XFS POSIX ACL support" 69 bool "XFS POSIX ACL support"
97 depends on XFS_FS 70 depends on XFS_FS
98 select FS_POSIX_ACL 71 select FS_POSIX_ACL
99 help 72 help
100 POSIX Access Control Lists (ACLs) su 73 POSIX Access Control Lists (ACLs) support permissions for users and
101 groups beyond the owner/group/world 74 groups beyond the owner/group/world scheme.
102 75
103 If you don't know what Access Contro 76 If you don't know what Access Control Lists are, say N.
104 77
105 config XFS_RT 78 config XFS_RT
106 bool "XFS Realtime subvolume support" 79 bool "XFS Realtime subvolume support"
107 depends on XFS_FS 80 depends on XFS_FS
108 help 81 help
109 If you say Y here you will be able t 82 If you say Y here you will be able to mount and use XFS filesystems
110 which contain a realtime subvolume. 83 which contain a realtime subvolume. The realtime subvolume is a
111 separate area of disk space where on 84 separate area of disk space where only file data is stored. It was
112 originally designed to provide deter 85 originally designed to provide deterministic data rates suitable
113 for media streaming applications, bu 86 for media streaming applications, but is also useful as a generic
114 mechanism for ensuring data and meta 87 mechanism for ensuring data and metadata/log I/Os are completely
115 separated. Regular file I/Os are is 88 separated. Regular file I/Os are isolated to a separate device
116 from all other requests, and this ca 89 from all other requests, and this can be done quite transparently
117 to applications via the inherit-real 90 to applications via the inherit-realtime directory inode flag.
118 91
119 See the xfs man page in section 5 fo 92 See the xfs man page in section 5 for additional information.
120 93
121 If unsure, say N. 94 If unsure, say N.
122 95
123 config XFS_DRAIN_INTENTS <<
124 bool <<
125 select JUMP_LABEL if HAVE_ARCH_JUMP_LA <<
126 <<
127 config XFS_LIVE_HOOKS <<
128 bool <<
129 select JUMP_LABEL if HAVE_ARCH_JUMP_LA <<
130 <<
131 config XFS_MEMORY_BUFS <<
132 bool <<
133 <<
134 config XFS_BTREE_IN_MEM <<
135 bool <<
136 <<
137 config XFS_ONLINE_SCRUB 96 config XFS_ONLINE_SCRUB
138 bool "XFS online metadata check suppor 97 bool "XFS online metadata check support"
139 default n 98 default n
140 depends on XFS_FS 99 depends on XFS_FS
141 depends on TMPFS && SHMEM <<
142 select XFS_LIVE_HOOKS <<
143 select XFS_DRAIN_INTENTS <<
144 select XFS_MEMORY_BUFS <<
145 help 100 help
146 If you say Y here you will be able t 101 If you say Y here you will be able to check metadata on a
147 mounted XFS filesystem. This featur 102 mounted XFS filesystem. This feature is intended to reduce
148 filesystem downtime by supplementing 103 filesystem downtime by supplementing xfs_repair. The key
149 advantage here is to look for proble 104 advantage here is to look for problems proactively so that
150 they can be dealt with in a controll 105 they can be dealt with in a controlled manner.
151 106
152 This feature is considered EXPERIMEN 107 This feature is considered EXPERIMENTAL. Use with caution!
153 108
154 See the xfs_scrub man page in sectio 109 See the xfs_scrub man page in section 8 for additional information.
155 110
156 If unsure, say N. 111 If unsure, say N.
157 112
158 config XFS_ONLINE_SCRUB_STATS <<
159 bool "XFS online metadata check usage <<
160 default y <<
161 depends on XFS_ONLINE_SCRUB <<
162 select DEBUG_FS <<
163 help <<
164 If you say Y here, the kernel will g <<
165 the online metadata check subsystem. <<
166 of invocations, the outcomes, and th <<
167 This may slow down scrub slightly du <<
168 timers and the need to merge per-inv <<
169 filesystem counters. <<
170 <<
171 Usage data are collected in /sys/ker <<
172 <<
173 If unsure, say N. <<
174 <<
175 config XFS_ONLINE_REPAIR 113 config XFS_ONLINE_REPAIR
176 bool "XFS online metadata repair suppo 114 bool "XFS online metadata repair support"
177 default n 115 default n
178 depends on XFS_FS && XFS_ONLINE_SCRUB 116 depends on XFS_FS && XFS_ONLINE_SCRUB
179 select XFS_BTREE_IN_MEM <<
180 help 117 help
181 If you say Y here you will be able t 118 If you say Y here you will be able to repair metadata on a
182 mounted XFS filesystem. This featur 119 mounted XFS filesystem. This feature is intended to reduce
183 filesystem downtime by fixing minor 120 filesystem downtime by fixing minor problems before they cause the
184 filesystem to go down. However, it 121 filesystem to go down. However, it requires that the filesystem be
185 formatted with secondary metadata, s 122 formatted with secondary metadata, such as reverse mappings and inode
186 parent pointers. 123 parent pointers.
187 124
188 This feature is considered EXPERIMEN 125 This feature is considered EXPERIMENTAL. Use with caution!
189 126
190 See the xfs_scrub man page in sectio 127 See the xfs_scrub man page in section 8 for additional information.
191 128
192 If unsure, say N. 129 If unsure, say N.
193 130
194 config XFS_WARN 131 config XFS_WARN
195 bool "XFS Verbose Warnings" 132 bool "XFS Verbose Warnings"
196 depends on XFS_FS && !XFS_DEBUG 133 depends on XFS_FS && !XFS_DEBUG
197 help 134 help
198 Say Y here to get an XFS build with 135 Say Y here to get an XFS build with many additional warnings.
199 It converts ASSERT checks to WARN, s 136 It converts ASSERT checks to WARN, so will log any out-of-bounds
200 conditions that occur that would oth 137 conditions that occur that would otherwise be missed. It is much
201 lighter weight than XFS_DEBUG and do 138 lighter weight than XFS_DEBUG and does not modify algorithms and will
202 not cause the kernel to panic on non 139 not cause the kernel to panic on non-fatal errors.
203 140
204 However, similar to XFS_DEBUG, it is 141 However, similar to XFS_DEBUG, it is only advisable to use this if you
205 are debugging a particular problem. 142 are debugging a particular problem.
206 143
207 config XFS_DEBUG 144 config XFS_DEBUG
208 bool "XFS Debugging support" 145 bool "XFS Debugging support"
209 depends on XFS_FS 146 depends on XFS_FS
210 help 147 help
211 Say Y here to get an XFS build with 148 Say Y here to get an XFS build with many debugging features,
212 including ASSERT checks, function wr 149 including ASSERT checks, function wrappers around macros,
213 and extra sanity-checking functions 150 and extra sanity-checking functions in various code paths.
214 151
215 Note that the resulting code will be 152 Note that the resulting code will be HUGE and SLOW, and probably
216 not useful unless you are debugging <<
217 <<
218 Say N unless you are an XFS develope <<
219 <<
220 config XFS_DEBUG_EXPENSIVE <<
221 bool "XFS expensive debugging checks" <<
222 depends on XFS_FS && XFS_DEBUG <<
223 help <<
224 Say Y here to get an XFS build with <<
225 enabled. These checks may affect pe <<
226 <<
227 Note that the resulting code will be <<
228 not useful unless you are debugging 153 not useful unless you are debugging a particular problem.
229 154
230 Say N unless you are an XFS develope 155 Say N unless you are an XFS developer, or you play one on TV.
231 156
232 config XFS_ASSERT_FATAL 157 config XFS_ASSERT_FATAL
233 bool "XFS fatal asserts" 158 bool "XFS fatal asserts"
234 default y 159 default y
235 depends on XFS_FS && XFS_DEBUG 160 depends on XFS_FS && XFS_DEBUG
236 help 161 help
237 Set the default DEBUG mode ASSERT fa 162 Set the default DEBUG mode ASSERT failure behavior.
238 163
239 Say Y here to cause DEBUG mode ASSER 164 Say Y here to cause DEBUG mode ASSERT failures to result in fatal
240 errors that BUG() the kernel by defa 165 errors that BUG() the kernel by default. If you say N, ASSERT failures
241 result in warnings. 166 result in warnings.
242 167
243 This behavior can be modified at run 168 This behavior can be modified at runtime via sysfs.
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