UBIFS

UBIFS (Unsorted Block Image File System) is for flash device.
UBIFS was designed to work on top of raw flash.


UBIFS image





mount UBIFS image

The following are UBIFS-specific mount options.

• chk_data_crc (default) - check data CRC-32 checksums;
• no_chk_data_crc - do not check data CRC-32 checksums, see this section for more details;
• bulk_read - enable bulk-read, see here;
• no_bulk_read (default) - do not bulk-read.

Example:

$ mount -o no_chk_data_crc /dev/ubi0_0 /mnt/ubifs

mounts UBIFS file-system to /mnt/ubifs and disables data CRC checking.

Besides, UBIFS supports the standard sync mount option which may be used to disable UBIFS write-back and write-buffer caching and make it fully synchronous. Note, UBIFS does not support "atime", so the atime mount option has no effect.