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/Documentation/ABI/stable/
Dsysfs-class-ubi1 What: /sys/class/ubi/
6 The ubi/ class sub-directory belongs to the UBI subsystem and
7 provides general UBI information, per-UBI device information
8 and per-UBI volume information.
10 What: /sys/class/ubi/version
15 This file contains version of the latest supported UBI on-media
17 However, if in the future UBI needs on-flash format changes
20 future backward-compatible (but forward-incompatible)
29 UBI devices (UBI device 0, 1, etc). They contain general UBI
30 device information and per UBI volume information (each UBI
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/Documentation/devicetree/bindings/mtd/partitions/
Dubi-volume.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/ubi-volume.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: UBI volume
10 This binding describes a single UBI volume. Volumes can be matches either
14 - Daniel Golle <daniel@makrotopia.org>
20 Match UBI volume ID
25 Match UBI volume ID
27 nvmem-layout:
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Dlinux,ubi.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mtd/partitions/linux,ubi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 UBI ("Unsorted Block Images") is a volume management system for raw
12 physical flash device and spreads the I/O load (i.e wear-leveling)
16 - Daniel Golle <daniel@makrotopia.org>
19 - $ref: partition.yaml#
23 const: linux,ubi
27 description: UBI Volumes
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/Documentation/filesystems/
Dubifs.rst1 .. SPDX-License-Identifier: GPL-2.0
4 UBI File System
10 UBIFS file-system stands for UBI File System. UBI stands for "Unsorted
13 is completely different to any traditional file-system in Linux, like
14 Ext2, XFS, JFS, etc. UBIFS represents a separate class of file-systems
16 file-system of this class is JFFS2.
24 2 MTD devices support 3 main operations - read from some offset within an
26 eraseblock. Block devices support 2 main operations - read a whole
29 re-write its contents. Blocks may be just re-written.
30 4 Eraseblocks become worn out after some number of erase cycles -
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Dubifs-authentication.rst1 .. SPDX-License-Identifier: GPL-2.0
24 binary to perform a malicious action when executed [DMC-CBC-ATTACK]. Since
28 Other full disk encryption systems like dm-crypt cover all filesystem metadata,
31 time. For dm-crypt and other filesystems that build upon the Linux block IO
32 layer, the dm-integrity or dm-verity subsystems [DM-INTEGRITY, DM-VERITY]
34 These can also be combined with dm-crypt [CRYPTSETUP2].
43 MTD, UBI & UBIFS
44 ----------------
48 work on top of MTD is UBI (Unsorted Block Images). It provides volume management
50 addition, it deals with flash-specific wear-leveling and transparent I/O error
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/Documentation/devicetree/bindings/nvmem/layouts/
Du-boot,env.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/nvmem/layouts/u-boot,env.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: U-Boot environment variables layout
10 U-Boot uses environment variables to store device parameters and
14 Data is stored using U-Boot specific formats (variant specific header and NUL
15 separated key-value pairs).
19 2. UBI volume
27 - Rafał Miłecki <rafal@milecki.pl>
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