sysfs-class-ubi - OpenGrok cross reference for /linux-6.12.1/Documentation/ABI/stable/sysfs-class-ubi

1 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
31 		device may have many UBI volumes)
33 What:		/sys/class/ubi/ubiX/avail_eraseblocks
39 		create a new UBI volume which has this amount of logical
42 What:		/sys/class/ubi/ubiX/bad_peb_count
49 What:		/sys/class/ubi/ubiX/bgt_enabled
54 		Contains ASCII "0\n" if the UBI background thread is disabled,
57 What:		/sys/class/ubi/ubiX/dev
63 		to this UBI device (in <major>:<minor> format).
65 What:		/sys/class/ubi/ubiX/eraseblock_size
70 		Maximum logical eraseblock size this UBI device may provide. UBI
74 What:		/sys/class/ubi/ubiX/max_ec
81 What:		/sys/class/ubi/ubiX/max_vol_count
86 		Maximum number of volumes which this UBI device may have.
88 What:		/sys/class/ubi/ubiX/min_io_size
96 What:		/sys/class/ubi/ubiX/mtd_num
103 What:		/sys/class/ubi/ubiX/reserved_for_bad
110 What:		/sys/class/ubi/ubiX/ro_mode
113 Contact:	linux-mtd@lists.infradead.org
115 		Contains ASCII "1\n" if the read-only flag is set on this
116 		device, and "0\n" if it is cleared. UBI devices mark themselves
117 		as read-only when they detect an unrecoverable error.
119 What:		/sys/class/ubi/ubiX/total_eraseblocks
127 What:		/sys/class/ubi/ubiX/volumes_count
132 		Count of volumes on this UBI device.
134 What:		/sys/class/ubi/ubiX/ubiX_Y/
139 		The /sys/class/ubi/ubiX/ubiX_0/, /sys/class/ubi/ubiX/ubiX_1/,
140 		etc directories describe UBI volumes on UBI device X (volumes
143 What:		/sys/class/ubi/ubiX/ubiX_Y/alignment
148 		Volume alignment - the value the logical eraseblock size of
149 		this volume has to be aligned on. For example, 2048 means that
151 		volume logical eraseblock size is UBI device logical eraseblock
154 What:		/sys/class/ubi/ubiX/ubiX_Y/corrupted
159 		Contains ASCII "0\n" if the UBI volume is OK, and ASCII "1\n"
160 		if it is corrupted (e.g., due to an interrupted volume update).
162 What:		/sys/class/ubi/ubiX/ubiX_Y/data_bytes
167 		The amount of data this volume contains. This value makes sense
168 		only for static volumes, and for dynamic volume it equivalent
169 		to the total volume size in bytes.
171 What:		/sys/class/ubi/ubiX/ubiX_Y/dev
177 		to this UBI volume (in <major>:<minor> format).
179 What:		/sys/class/ubi/ubiX/ubiX_Y/name
184 		Volume name.
186 What:		/sys/class/ubi/ubiX/ubiX_Y/reserved_ebs
191 		Count of physical eraseblock reserved for this volume.
192 		Equivalent to the volume size in logical eraseblocks.
194 What:		/sys/class/ubi/ubiX/ubiX_Y/type
199 		Volume type. Contains ASCII "dynamic\n" for dynamic volumes and
202 What:		/sys/class/ubi/ubiX/ubiX_Y/upd_marker
208 		volume, and "1\n" if it is set. The update marker is set when
209 		volume update starts, and cleaned when it ends. So the presence
210 		of the update marker indicates that the volume is being updated
214 What:		/sys/class/ubi/ubiX/ubiX_Y/usable_eb_size
219 		Logical eraseblock size of this volume. Equivalent to logical
220 		eraseblock size of the device aligned on the volume alignment