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Changes to support config-setup service for multi-npu #4609

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merged 5 commits into from
May 20, 2020
Merged

Changes to support config-setup service for multi-npu #4609

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215cb7b
Changes to support config-setup service for multi-npu
abdosi May 15, 2020
a4c8ea8
Address Review Comments.
abdosi May 18, 2020
d0f07b0
Address Review comments
abdosi May 18, 2020
2a64192
Address Review Comments of using pyhton based config load_minigraph/
abdosi May 20, 2020
1bcafef
Updated to use python command so no code duplication.
abdosi May 20, 2020
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186 changes: 166 additions & 20 deletions files/image_config/config-setup/config-setup
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,11 @@

# Initialize constants
UPDATEGRAPH_CONF=/etc/sonic/updategraph.conf
INIT_CFG_JSON=/etc/sonic/init_cfg.json
CONFIG_DB_JSON=/etc/sonic/config_db.json
CONFIG_DB_PATH=/etc/sonic/
CONFIG_DB_PREFIX=config_db
CONFIG_DB_SUFFIX=.json
MINGRAPH_FILE=/etc/sonic/minigraph.xml
TMP_ZTP_CONFIG_DB_JSON=/tmp/ztp_config_db.json
FACTORY_DEFAULT_HOOKS=/etc/config-setup/factory-default-hooks.d
Expand Down Expand Up @@ -99,28 +103,123 @@ run_hookdir() {
return $exit_status
}

initalize_configdb()
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@lguohan lguohan May 18, 2020 •
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can instead call config reload -y instead of implementing here? it is code duplication. it can cause code maintain problem.

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@lguohan I was thinking other way when making change. config reload/save command does stop/start services which is not needed during config-setup script.
We can update those commands to call config-setup shell script with maintaining stop/start of services.
That way code will be present only in config-setup for config db generation.

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the reason the other way is preferred is that we can add more unit tests for the python script, but not bash script.

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@lguohan. Python script will still exist but internally will call shell script command. Here is the reference PR: sonic-net/sonic-utilities#919

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@abdosi abdosi May 20, 2020 •
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@lguohan Updated to use python commands.

{
# Create correct argument based on per-asic name space in multi-npu platforms
if [[ ! -z "$2" ]]; then
NAMESPACE_ARGUMENT=${NAMESPACE_OPTION}${NAMESPACE_PREFIX}$2
IP_NETNS_CMD=${IP_NETNS_CMD_PREFIX}${NAMESPACE_PREFIX}$2
else
NAMESPACE_ARGUMENT=$2
IP_NETNS_CMD=$2
fi

if [ "$1" == "init" ]; then
# case when config db need to be created/initialized from minigraph
sonic-db-cli ${NAMESPACE_ARGUMENT} CONFIG_DB FLUSHDB
sonic-cfggen -H -m -j ${INIT_CFG_JSON} ${NAMESPACE_ARGUMENT} --write-to-db
sonic-db-cli ${NAMESPACE_ARGUMENT} CONFIG_DB SET "CONFIG_DB_INITIALIZED" "1"
sonic-cfggen -d --print-data > ${CONFIG_DB_PATH}${CONFIG_DB_PREFIX}$2${CONFIG_DB_SUFFIX}
if [[ ($NUM_ASIC -gt 1) && ( -z "$2") ]]; then
return 0
fi
# this will be run only in per-asic namespace only in multi-npu platforms
${IP_NETNS_CMD} config qos reload
${IP_NETNS_CMD} pfcwd start_default
elif [ "$1" == "reload" ]; then
# case when config db is already present from previous image file system
sonic-cfggen ${NAMESPACE_ARGUMENT} -j ${CONFIG_DB_PATH}${CONFIG_DB_PREFIX}$2${CONFIG_DB_SUFFIX} --write-to-db
fi

return 0
}
configdb_migrator()
{
if [[ ! -z "$2" ]]; then
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NAMESPACE_ARGUMENT=${NAMESPACE_OPTION}${NAMESPACE_PREFIX}$2
else
NAMESPACE_ARGUMENT=$2
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fi

if [ "$1" == "init" ]; then
# case when config db created/initialized from minigraph need to be migrated
if [[ -x /usr/bin/db_migrator.py ]]; then
# Set latest version number
/usr/bin/db_migrator.py ${NAMESPACE_ARGUMENT} -o set_version
fi
elif [ "$1" == "reload" ]; then
# case when config db is already present from previous image file system
# need to be migrated
if [[ -x /usr/bin/db_migrator.py ]]; then
# Migrate the DB to the latest schema version if needed
/usr/bin/db_migrator.py ${NAMESPACE_ARGUMENT} -o migrate
fi
fi
}

# Reload minigraph.xml file on disk
reload_minigraph()
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{
echo "Reloading minigraph..."
if [ ! -f /etc/sonic/init_cfg.json ]; then
echo "{}" > /etc/sonic/init_cfg.json
fi
sonic-db-cli CONFIG_DB FLUSHDB
sonic-cfggen -H -m -j /etc/sonic/init_cfg.json --write-to-db
sonic-db-cli CONFIG_DB SET "CONFIG_DB_INITIALIZED" "1"

# Initialize config db for single-npu platform and global config db for multi-npu
# platforms
initalize_configdb init ''
asic_num=0
while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]
do
# Intiialize per asic/namespace config db
initalize_configdb init $asic_num
((asic_num = asic_num + 1))
done
if [ -f /etc/sonic/acl.json ]; then
# For acl the acl-loader command takes care for multi-npu platforms
acl-loader update full /etc/sonic/acl.json
fi
config qos reload
pfcwd start_default

if [[ -x /usr/bin/db_migrator.py ]]; then
# Set latest version number
/usr/bin/db_migrator.py -o set_version
fi

# Initialize config db migrator for single-npu platform and global config db for multi-npu
# platforms
configdb_migrator init ''
asic_num=0
while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]
do
# Initialize config db migrator for per-asic namespace config db
# in multi-npu platforms
configdb_migrator init $asic_num
((asic_num = asic_num + 1))
done
}

# Reload exisitng config db file on disk
reload_configdb()
{
echo "Reloading existing config db..."
# Reload existing config db for single-npu platform and global config db for multi-npu
# platforms
initalize_configdb reload ''
asic_num=0
while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]
do
# Reload exisitng per asic/namespace config db
initalize_configdb reload $asic_num
((asic_num = asic_num + 1))
done

# Initialize existing config db migrator for single-npu platform and global config db for multi-npu
# platforms
configdb_migrator reload ''
asic_num=0
while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]
do
# Initialize existing config db migrator for single-npu platform and global config db for multi-npu
# platforms
configdb_migrator reload $asic_num
((asic_num = asic_num + 1))
done
}
# Restore SONiC configuration from a backup copy
function copy_config_files_and_directories()
{
Expand Down Expand Up @@ -281,15 +380,51 @@ copy_post_migration_hooks()
fi
}

# Get the list of config db for both
# single and multi-npu platforms
get_config_db_file_list()
{
config_db_file_list=${CONFIG_DB_PREFIX}${CONFIG_DB_SUFFIX}
asic_num=0
while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]
do
config_db_file_list+=' '${CONFIG_DB_PREFIX}$asic_num${CONFIG_DB_SUFFIX}
((asic_num = asic_num + 1))
done

echo $config_db_file_list
}
# Check if all needed config db are prsesnt for both
# single and multi-npu platforms
check_config_db_present()
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{
if [[ ! -r ${CONFIG_DB_JSON} ]]; then
return 1
fi
asic_num=0
while [[ ($asic_num -lt $NUM_ASIC) && ($NUM_ASIC -gt 1) ]]
do
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if [[ ! -r ${CONFIG_DB_PATH}${CONFIG_DB_PREFIX}$asic_num${CONFIG_DB_SUFFIX} ]]; then
return 1
fi
((asic_num = asic_num + 1))
done

return 0
}

# Perform configuration migration from backup copy.
# - This step is performed when a new image is installed and SONiC switch boots into it
do_config_migration()
{
# Identify list of files to migrate
copy_list="minigraph.xml snmp.yml acl.json config_db.json frr"
copy_list="minigraph.xml snmp.yml acl.json frr"

# Migrate all configuration files from old to new
copy_config_files_and_directories $copy_list

# Migrate all config_db from old to new
copy_config_files_and_directories $(get_config_db_file_list)

# Migrate post-migration hooks
copy_post_migration_hooks
Expand All @@ -302,21 +437,14 @@ do_config_migration()
disable_updategraph
rm -f /tmp/pending_config_migration
exit 0
elif [ -r ${CONFIG_DB_JSON} ]; then
elif check_config_db_present; then
echo "Use config_db.json from old system..."
sonic-cfggen -j ${CONFIG_DB_JSON} --write-to-db

if [[ -x /usr/bin/db_migrator.py ]]; then
# Migrate the DB to the latest schema version if needed
/usr/bin/db_migrator.py -o migrate
fi
reload_configdb
# Disable updategraph
disable_updategraph
elif [ -r ${MINGRAPH_FILE} ]; then
echo "Use minigraph.xml from old system..."
reload_minigraph
sonic-cfggen -d --print-data > ${CONFIG_DB_JSON}

# Disable updategraph
disable_updategraph
else
Expand Down Expand Up @@ -351,6 +479,14 @@ boot_config()
do_config_migration
fi

# For multi-npu platfrom we don't support config initlaiztion. Assumption
# is there should be existing minigraph or config_db from previous image
# file system to trigger. pending_config_initialization will remain set
# for multi-npu platforms if we reach this case.
if [[ ($NUM_ASIC -gt 1) ]]; then
return 0
fi

if [ -e /tmp/pending_config_initialization ] || [ -e ${CONFIG_SETUP_INITIALIZATION_FLAG} ]; then
do_config_initialization
fi
Expand All @@ -373,6 +509,16 @@ boot_config()
}

### Execution starts here ###
PLATFORM=`sonic-cfggen -H -v DEVICE_METADATA.localhost.platform`
# Parse the device specific asic conf file, if it exists
ASIC_CONF=/usr/share/sonic/device/$PLATFORM/asic.conf
if [ -f "$ASIC_CONF" ]; then
source $ASIC_CONF
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fi

NAMESPACE_OPTION='-n '
NAMESPACE_PREFIX='asic'
IP_NETNS_CMD_PREFIX='sudo ip netns exec '

CMD=$1
# Default command is boot
Expand Down