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Fstab

The document outlines the fstab configuration for Android devices, detailing the mounting of various partitions such as /data, /system, and /vendor. It includes notes on filesystem checks and flags, as well as specific options for each partition type. Additionally, it highlights the early-mounting of /system and /vendor partitions and mentions the need for a future update to include filesystem checks for the data partition.

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Srb Nathan
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89 views2 pages

Fstab

The document outlines the fstab configuration for Android devices, detailing the mounting of various partitions such as /data, /system, and /vendor. It includes notes on filesystem checks and flags, as well as specific options for each partition type. Additionally, it highlights the early-mounting of /system and /vendor partitions and mentions the need for a future update to include filesystem checks for the data partition.

Uploaded by

Srb Nathan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as TXT, PDF, TXT or read online on Scribd
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# Android fstab file.

# The filesystem that contains the filesystem checker binary (typically /system)
cannot
# specify MF_CHECK, and must come before any filesystems that do specify MF_CHECK

# NOTE: /system and /vendor partitions are now early-mounted and the fstab entry is
specified in device tree (duplicated below for recovery image purposes only):
# /proc/device-tree/firmware/android/fstab/system
# /proc/device-tree/firmware/android/fstab/vendor

#TODO: Add 'check' as fs_mgr_flags with data partition.


# Currently we dont have e2fsck compiled. So fs check would failed.

# Non-A/B fstab.qcom variant


#<src> <mnt_point>
<type> <mnt_flags and options>
<fs_mgr_flags>
/dev/block/bootdevice/by-name/userdata /data ext4
nosuid,nodev,barrier=1,noauto_da_alloc,discard,noatime,lazytime,errors=panic
wait,resize,check,fileencryption=ice,crashcheck,quota
/dev/block/bootdevice/by-name/misc /misc emmc
defaults
defaults
/dev/block/bootdevice/by-name/modem /vendor/firmware_mnt vfat
ro,shortname=lower,uid=1000,gid=1000,dmask=227,fmask=337,context=u:object_r:firmwar
e_file:s0 wait
/dev/block/bootdevice/by-name/bluetooth /vendor/bt_firmware vfat
ro,shortname=lower,uid=1002,gid=3002,dmask=227,fmask=337,context=u:object_r:bt_firm
ware_file:s0 wait
/devices/soc/a800000.ssusb/a800000.dwc3/xhci-hcd.0.auto* /storage/usbotg vfat
nosuid,nodev
wait,voldmanaged=usbotg:auto
/dev/block/bootdevice/by-name/dsp /vendor/dsp ext4
ro,nosuid,nodev,barrier=1
wait
/dev/block/bootdevice/by-name/cache /cache ext4
nosuid,nodev,noatime,barrier=1
wait
/dev/block/bootdevice/by-name/cache /cache f2fs
nosuid,nodev,noatime,discard,background_gc=off,fsync_mode=nobarrier
wait,quota
/dev/block/bootdevice/by-name/persist /mnt/vendor/persist ext4
nosuid,nodev,barrier=1,noatime
wait,check
/devices/soc/c084000.sdhci/mmc_host* auto auto
nosuid,nodev
wait,voldmanaged=sdcard1:auto,encryptable=userdata

/dev/block/bootdevice/by-name/system /system ext4


ro,barrier=1
wait,recoveryonly
/dev/block/bootdevice/by-name/vendor /vendor ext4
ro,barrier=1
wait,recoveryonly
/dev/block/bootdevice/by-name/boot /boot emmc
defaults
defaults
/dev/block/bootdevice/by-name/recovery /recovery emmc
default
recoveryonly

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