diff options
Diffstat (limited to 'fs/xfs/Kconfig')
| -rw-r--r-- | fs/xfs/Kconfig | 120 |
1 files changed, 110 insertions, 10 deletions
diff --git a/fs/xfs/Kconfig b/fs/xfs/Kconfig index e685299eb3d2..b99da294e9a3 100644 --- a/fs/xfs/Kconfig +++ b/fs/xfs/Kconfig @@ -3,7 +3,7 @@ config XFS_FS tristate "XFS filesystem support" depends on BLOCK select EXPORTFS - select LIBCRC32C + select CRC32 select FS_IOMAP help XFS is a high performance journaling filesystem which originated @@ -22,6 +22,58 @@ config XFS_FS system of your root partition is compiled as a module, you'll need to use an initial ramdisk (initrd) to boot. +config XFS_SUPPORT_V4 + bool "Support deprecated V4 (crc=0) format" + depends on XFS_FS + default n + help + The V4 filesystem format lacks certain features that are supported + by the V5 format, such as metadata checksumming, strengthened + metadata verification, and the ability to store timestamps past the + year 2038. Because of this, the V4 format is deprecated. All users + should upgrade by backing up their files, reformatting, and restoring + from the backup. + + Administrators and users can detect a V4 filesystem by running + xfs_info against a filesystem mountpoint and checking for a string + beginning with "crc=". If the string "crc=0" is found, the + filesystem is a V4 filesystem. If no such string is found, please + upgrade xfsprogs to the latest version and try again. + + This option became default N in September 2025. Support for the + V4 format will be removed entirely in September 2030. Distributors + can say N here to withdraw support earlier. + + To continue supporting the old V4 format (crc=0), say Y. + To close off an attack surface, say N. + +config XFS_SUPPORT_ASCII_CI + bool "Support deprecated case-insensitive ascii (ascii-ci=1) format" + depends on XFS_FS + default n + help + The ASCII case insensitivity filesystem feature only works correctly + on systems that have been coerced into using ISO 8859-1, and it does + not work on extended attributes. The kernel has no visibility into + the locale settings in userspace, so it corrupts UTF-8 names. + Enabling this feature makes XFS vulnerable to mixed case sensitivity + attacks. Because of this, the feature is deprecated. All users + should upgrade by backing up their files, reformatting, and restoring + from the backup. + + Administrators and users can detect such a filesystem by running + xfs_info against a filesystem mountpoint and checking for a string + beginning with "ascii-ci=". If the string "ascii-ci=1" is found, the + filesystem is a case-insensitive filesystem. If no such string is + found, please upgrade xfsprogs to the latest version and try again. + + This option became default N in September 2025. Support for the + feature will be removed entirely in September 2030. Distributors + can say N here to withdraw support earlier. + + To continue supporting case-insensitivity (ascii-ci=1), say Y. + To close off an attack surface, say N. + config XFS_QUOTA bool "XFS Quota support" depends on XFS_FS @@ -53,6 +105,7 @@ config XFS_POSIX_ACL config XFS_RT bool "XFS Realtime subvolume support" depends on XFS_FS + default BLK_DEV_ZONED help If you say Y here you will be able to mount and use XFS filesystems which contain a realtime subvolume. The realtime subvolume is a @@ -66,12 +119,39 @@ config XFS_RT See the xfs man page in section 5 for additional information. + This option is mandatory to support zoned block devices. For these + devices, the realtime subvolume must be backed by a zoned block + device and a regular block device used as the main device (for + metadata). If the zoned block device is a host-managed SMR hard-disk + containing conventional zones at the beginning of its address space, + XFS will use the disk conventional zones as the main device and the + remaining sequential write required zones as the backing storage for + the realtime subvolume. + If unsure, say N. +config XFS_DRAIN_INTENTS + bool + select JUMP_LABEL if HAVE_ARCH_JUMP_LABEL + +config XFS_LIVE_HOOKS + bool + select JUMP_LABEL if HAVE_ARCH_JUMP_LABEL + +config XFS_MEMORY_BUFS + bool + +config XFS_BTREE_IN_MEM + bool + config XFS_ONLINE_SCRUB bool "XFS online metadata check support" - default n + default y depends on XFS_FS + depends on TMPFS && SHMEM + select XFS_LIVE_HOOKS + select XFS_DRAIN_INTENTS + select XFS_MEMORY_BUFS help If you say Y here you will be able to check metadata on a mounted XFS filesystem. This feature is intended to reduce @@ -79,16 +159,28 @@ config XFS_ONLINE_SCRUB advantage here is to look for problems proactively so that they can be dealt with in a controlled manner. - This feature is considered EXPERIMENTAL. Use with caution! - See the xfs_scrub man page in section 8 for additional information. - If unsure, say N. +config XFS_ONLINE_SCRUB_STATS + bool "XFS online metadata check usage data collection" + default y + depends on XFS_ONLINE_SCRUB + depends on DEBUG_FS + help + If you say Y here, the kernel will gather usage data about + the online metadata check subsystem. This includes the number + of invocations, the outcomes, and the results of repairs, if any. + This may slow down scrub slightly due to the use of high precision + timers and the need to merge per-invocation information into the + filesystem counters. + + Usage data are collected in /sys/kernel/debug/xfs/scrub. config XFS_ONLINE_REPAIR bool "XFS online metadata repair support" - default n + default y depends on XFS_FS && XFS_ONLINE_SCRUB + select XFS_BTREE_IN_MEM help If you say Y here you will be able to repair metadata on a mounted XFS filesystem. This feature is intended to reduce @@ -97,12 +189,8 @@ config XFS_ONLINE_REPAIR formatted with secondary metadata, such as reverse mappings and inode parent pointers. - This feature is considered EXPERIMENTAL. Use with caution! - See the xfs_scrub man page in section 8 for additional information. - If unsure, say N. - config XFS_WARN bool "XFS Verbose Warnings" depends on XFS_FS && !XFS_DEBUG @@ -129,6 +217,18 @@ config XFS_DEBUG Say N unless you are an XFS developer, or you play one on TV. +config XFS_DEBUG_EXPENSIVE + bool "XFS expensive debugging checks" + depends on XFS_FS && XFS_DEBUG + help + Say Y here to get an XFS build with expensive debugging checks + enabled. These checks may affect performance significantly. + + Note that the resulting code will be HUGER and SLOWER, and probably + not useful unless you are debugging a particular problem. + + Say N unless you are an XFS developer, or you play one on TV. + config XFS_ASSERT_FATAL bool "XFS fatal asserts" default y |