phala在ubuntu20.04运行后，将系统升级到22.04会导致无法加载之前的key文件信息

[wowvwow]

当phala在ubuntu20.04运行后，生成key上链运行后，系统自动升级到ubuntu22.04后，phala对应的pruntime无法加载之前的key文件信息，报错信息如下：

Gramine detected the following insecure configurations:

• loader.insecure__use_cmdline_argv = true (forwarding command-line args from untrusted host to the app)
• sys.insecure__allow_eventfd = true (host-based eventfd is enabled)
• sgx.allowed_files = [ ... ] (some files are passed through from untrusted host without verification)

Gramine will continue application execution, but this configuration must not be used in production!

Running in Gramine-SGX
mr_enclave : 0x613d6e739dd0b8fed8b5d1bd0a5d494d4c378d6090c6d709d409cbcefac7ad42
mr_signer : 0x815f42f11cf64430c30bab7816ba596a1da0130c3b028b673133a66cf9a3e0e6
isv_svn : 0x0000
isv_prod_id : 0x0000
git revision: 77dbf62
2023-08-30T20:52:58.150350Z INFO main: pruntime: Starting pruntime... sgx=true
2023-08-30T20:52:58.150378Z INFO main: pruntime: bench_cores=6
2023-08-30T20:52:58.150393Z INFO main: pruntime: init_args: InitArgs {
sealing_path: "/data/protected_files",
storage_path: "/data/storage_files",
init_bench: false,
version: "2.0.1",
git_revision: "77dbf62d40a77339436354266709af7ee10fa740-20230414102905",
enable_checkpoint: true,
checkpoint_interval: 3600,
remove_corrupted_checkpoint: true,
max_checkpoint_files: 2,
cores: 6,
public_port: None,
safe_mode_level: 0,
no_rcu: false,
}
thread 'main' panicked at 'Initialize Failed: Failed to load checkpoint: Failed to load persistent data

Caused by:
0: IoError(Permission denied (os error 13))
1: Permission denied (os error 13)', src/main.rs:161:9
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

[wowvwow]

对应给出的错误原因，并不是有效的方式

[kvinwang]

The issue would be resolved by #1370. However, the already broken key can not be restored.