gs201: add script to migrate persist to ext4 am: 214b76abd3
Original change: https://googleplex-android-review.googlesource.com/c/device/google/gs201/+/19391442 Change-Id: Ia9aebca936b72fb4faed9dc202ba5d1f8fcfc789 Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
This commit is contained in:
Konstantin Vyshetsky
Automerger Merge Worker
commit
35bedc6a9d
3 changed files with 186 additions and 1 deletions
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@ -2,7 +2,12 @@ import /vendor/etc/init/hw/init.gs201.usb.rc
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import android.hardware.drm@1.2-service.widevine.rc
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import init.exynos.sensorhub.rc
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on early-init
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on early-init && property:ro.debuggable=1
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# Convert /dev/block/by-name/persist to ext4 on userdebug builds only
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exec -- /system_ext/bin/convert_to_ext4.sh /dev/block/by-name/persist false
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mount_all /vendor/etc/fstab.persist --early
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on early-init && property:ro.debuggable=0
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mount_all /vendor/etc/fstab.persist --early
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on init
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176
convert_to_ext4.sh
Normal file
176
convert_to_ext4.sh
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@ -0,0 +1,176 @@
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#!/bin/sh
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PERSIST_BLK='/dev/block/by-name/persist'
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EFS_BLK='/dev/block/by-name/efs'
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MNT_BASE='/mnt/product'
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MNT_OLD="$MNT_BASE/convert_old"
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MNT_NEW="$MNT_BASE/convert_new"
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function log() {
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if [ ! -z "$1" ]; then
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echo "partition_convert: $1" > /dev/kmsg
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fi
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}
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function check_success() {
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RES=$?
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if [ $RES -ne 0 ]; then
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log "Failed: $1"
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else
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log "Success: $1"
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fi
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return $RES
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}
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function get_fs_type()
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{
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BLOCK=$1
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EXT4_MAGIC=$(xxd $BLOCK -s 0x438 -l 2 -p)
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if [ "$EXT4_MAGIC" = "53ef" ]; then
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echo "ext4"
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else
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F2FS_MAGIC=$(xxd $BLOCK -s 0x400 -l 4 -p)
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if [ "$F2FS_MAGIC" = "1020f5f2" ]; then
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echo "f2fs"
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else
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echo "unknown"
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fi
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fi
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}
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# Flow:
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# 1. If persist is f2fs we need to make efs ext4 and copy out the files. Once files are copied
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# successfully, format persist as ext4 to mark completion of step.
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# 2. If persist is ext4 and efs is ext4, we need to copy from efs to persist (use dd). Once
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# everything is copied successfully, erase efs to allow it to be formatted to f2fs later.
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# 3. If persist is ext4 and efs is not ext4, we have already migrated - do nothing.
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# If persist is already ext4 and efs is not ext4 we have already migrated.
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PERSIST_FS=$(get_fs_type $PERSIST_BLK)
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EFS_FS=$(get_fs_type $EFS_BLK)
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if [ "$PERSIST_FS" = "ext4" ]; then
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if [ "$EFS_FS" != "ext4" ]; then
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log "persist ext4 migration already done"
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exit 0
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fi
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fi
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if [ "$PERSIST_FS" = "unknown" ]; then
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log "persist partition hasn't been initialized"
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exit 0
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fi
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RETRIES=10
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while [[ $RETRIES -gt 0 ]]; do
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# Sleep for 1 second here, as other failure points will trigger continue
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sleep 1
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RETRIES=$((RETRIES-1))
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# If persist is still f2fs, we need to copy to efs.
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if [ "$PERSIST_FS" = "f2fs" ]; then
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# Format efs as ext4
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/system/bin/mke2fs -t ext4 -b 4096 $EFS_BLK
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check_success "/system/bin/mke2fs -t ext4 -b 4096 $EFS_BLK"
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if [ $? -ne 0 ]; then
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continue
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fi
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#Create directory to mount persist partition
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mkdir -p $MNT_OLD
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check_success "mkdir $MNT_OLD"
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if [ $? -ne 0 ]; then
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continue
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fi
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# Create directory to mount efs partition
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mkdir -p $MNT_NEW
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check_success "mkdir $MNT_NEW"
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if [ $? -ne 0 ]; then
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rm -rf $MNT_OLD
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continue
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fi
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# Mount persist
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mount -t f2fs $PERSIST_BLK $MNT_OLD
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check_success "mount -t f2fs $PERSIST_BLK $MNT_OLD"
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if [ $? -ne 0 ]; then
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rm -rf $MNT_NEW
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rm -rf $MNT_OLD
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continue
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fi
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# Mount efs
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mount -t ext4 $EFS_BLK $MNT_NEW
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check_success "mount -t ext4 $EFS_BLK $MNT_NEW"
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if [ $? -ne 0 ]; then
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umount $MNT_OLD
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rm -rf $MNT_NEW
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rm -rf $MNT_OLD
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continue
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fi
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cp -rp $MNT_OLD/* $MNT_NEW/
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check_success "cp -rp $MNT_OLD/* $MNT_NEW/"
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if [ $? -ne 0 ]; then
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umount $MNT_NEW
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umount $MNT_OLD
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rm -rf $MNT_NEW
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rm -rf $MNT_OLD
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continue
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fi
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# Calculate md5sum of all files and compare between persist and efs
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(cd $MNT_NEW; find . -type f | xargs md5sum | sort) > $MNT_NEW/md5sums
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(cd $MNT_OLD; find . -type f | xargs md5sum | sort) > $MNT_OLD/md5sums
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diff -q $MNT_NEW/md5sums $MNT_OLD/md5sums
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check_success "diff -q $MNT_NEW/md5sums $MNT_OLD/md5sums"
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RES=$?
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umount $MNT_NEW
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umount $MNT_OLD
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rm -rf $MNT_NEW
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rm -rf $MNT_OLD
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if [ $RES -ne 0 ]; then
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continue
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fi
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/system/bin/mke2fs -t ext4 -b 4096 $PERSIST_BLK
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check_success "/system/bin/mke2fs -t ext4 -b 4096 $PERSIST_BLK"
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if [ $? -ne 0 ]; then
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continue
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fi
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PERSIST_FS="ext4"
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fi
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# copy efs to persist
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dd if=$EFS_BLK of=$PERSIST_BLK
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check_success "dd if=$EFS_BLK of=$PERSIST_BLK"
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if [ $? -ne 0 ]; then
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continue
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fi
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sync
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check_success "sync"
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if [ $? -ne 0 ]; then
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continue
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fi
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# compare md5sum for integrity
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EFS_MD5SUM=$(dd if=$EFS_BLK 2>/dev/null | md5sum)
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PERSIST_MD5SUM=$(dd if=$PERSIST_BLK 2>/dev/null | md5sum)
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if [ "$PERSIST_MD5SUM" != "$EFS_MD5SUM" ]; then
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log "dd md5sum mismatch"
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continue
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fi
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dd if=/dev/zero of=$EFS_BLK bs=1M count=64
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check_success "dd if=/dev/zero of=$EFS_BLK bs=1M count=64"
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if [ $? -ne 0 ]; then
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continue
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fi
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log "Migration succeeded"
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break
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done
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@ -337,6 +337,10 @@ PRODUCT_PACKAGES += \
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tune2fs.vendor_ramdisk \
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resize2fs.vendor_ramdisk
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# Filesystem: convert /dev/block/by-name/persist to ext4 (b/239632964)
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PRODUCT_COPY_FILES += \
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device/google/gs201/convert_to_ext4.sh:$(TARGET_COPY_OUT_SYSTEM_EXT)/bin/convert_to_ext4.sh \
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# Userdata Checkpointing OTA GC
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PRODUCT_PACKAGES += \
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checkpoint_gc
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