https://community.nxp.com/t5/i-MX-Processors/Issue-while-mounting-device-mapper-created-by-dm-verity/m-p/1263510#M172729 <P>Hi</P><P>Trying to implement dm-verity for verifying/Authenticating my readonly rootfile system.</P><P><STRONG>Host :</STRONG></P><P>Successfully created hashtree and roothash for my ro rootfile system and verified it with <STRONG>verify</STRONG> command.</P><P><STRONG>Target:(imx8m mini kernel)</STRONG></P><P>Created a mapper /dev/mapper/vroot for the block device which has my readonly rootfile system with the help of hashtree and roothash.</P><P>when i try to mount it i'm getting below error.</P><BLOCKQUOTE><P>sh-4.4# mount -o ro /dev/mapper/vroot /mnt/<BR />[ 455.059274] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.065872] EXT4-fs (dm-0): unable to read superblock<BR />[ 455.073189] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.079513] EXT4-fs (dm-0): unable to read superblock<BR />[ 455.086139] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.092485] EXT2-fs (dm-0): error: unable to read superblock<BR />[ 455.100009] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.106334] SQUASHFS error: squashfs_read_data failed to read block 0x0<BR />[ 455.113001] squashfs: SQUASHFS error: unable to read squashfs_super_block<BR />[ 455.121428] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.127756] FAT-fs (dm-0): unable to read boot sector<BR />mount: mounting /dev/mapper/vroot on /mnt/ failed: Input/output error</P></BLOCKQUOTE><P>Best Regards,</P><P>Khaleel</P> Fri, 16 Apr 2021 11:12:34 GMT khaleel 2021-04-16T11:12:34Z https://community.nxp.com/t5/i-MX-Processors/Issue-while-mounting-device-mapper-created-by-dm-verity/m-p/1263510#M172729 <P>Hi</P><P>Trying to implement dm-verity for verifying/Authenticating my readonly rootfile system.</P><P><STRONG>Host :</STRONG></P><P>Successfully created hashtree and roothash for my ro rootfile system and verified it with <STRONG>verify</STRONG> command.</P><P><STRONG>Target:(imx8m mini kernel)</STRONG></P><P>Created a mapper /dev/mapper/vroot for the block device which has my readonly rootfile system with the help of hashtree and roothash.</P><P>when i try to mount it i'm getting below error.</P><BLOCKQUOTE><P>sh-4.4# mount -o ro /dev/mapper/vroot /mnt/<BR />[ 455.059274] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.065872] EXT4-fs (dm-0): unable to read superblock<BR />[ 455.073189] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.079513] EXT4-fs (dm-0): unable to read superblock<BR />[ 455.086139] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.092485] EXT2-fs (dm-0): error: unable to read superblock<BR />[ 455.100009] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.106334] SQUASHFS error: squashfs_read_data failed to read block 0x0<BR />[ 455.113001] squashfs: SQUASHFS error: unable to read squashfs_super_block<BR />[ 455.121428] device-mapper: verity: 179:2: data block 0 is corrupted<BR />[ 455.127756] FAT-fs (dm-0): unable to read boot sector<BR />mount: mounting /dev/mapper/vroot on /mnt/ failed: Input/output error</P></BLOCKQUOTE><P>Best Regards,</P><P>Khaleel</P> Fri, 16 Apr 2021 11:12:34 GMT https://community.nxp.com/t5/i-MX-Processors/Issue-while-mounting-device-mapper-created-by-dm-verity/m-p/1263510#M172729 khaleel 2021-04-16T11:12:34Z https://community.nxp.com/t5/i-MX-Processors/Issue-while-mounting-device-mapper-created-by-dm-verity/m-p/1263980#M172783 <P>Hi</P> <P>&nbsp;Please see&nbsp;3.4 Configurations in Linux/Android platform for security features in&nbsp;i.MX_Android_Security_User's_Guide.pdf</P> Mon, 19 Apr 2021 04:28:27 GMT https://community.nxp.com/t5/i-MX-Processors/Issue-while-mounting-device-mapper-created-by-dm-verity/m-p/1263980#M172783 Zhiming_Liu 2021-04-19T04:28:27Z