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bf4e919811
These tests send off large rpc calls (e.g.by submitting large txns or blocks) that exceed the limit of execve (128kb on many systems) when using cli.
91 lines
4 KiB
Python
Executable file
91 lines
4 KiB
Python
Executable file
#!/usr/bin/env python3
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# Copyright (c) 2023-present The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Test running bitcoind with -reindex from a read-only blockstore
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- Start a node, generate blocks, then restart with -reindex after setting blk files to read-only
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"""
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import os
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import stat
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import subprocess
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from test_framework.test_framework import BitcoinTestFramework
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class BlockstoreReindexTest(BitcoinTestFramework):
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def set_test_params(self):
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self.setup_clean_chain = True
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self.num_nodes = 1
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self.extra_args = [["-fastprune"]]
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self.supports_cli = False
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def reindex_readonly(self):
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self.log.debug("Generate block big enough to start second block file")
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fastprune_blockfile_size = 0x10000
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opreturn = "6a"
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nulldata = fastprune_blockfile_size * "ff"
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self.generateblock(self.nodes[0], output=f"raw({opreturn}{nulldata})", transactions=[])
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block_count = self.nodes[0].getblockcount()
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self.stop_node(0)
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assert (self.nodes[0].chain_path / "blocks" / "blk00000.dat").exists()
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assert (self.nodes[0].chain_path / "blocks" / "blk00001.dat").exists()
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self.log.debug("Make the first block file read-only")
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filename = self.nodes[0].chain_path / "blocks" / "blk00000.dat"
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filename.chmod(stat.S_IREAD)
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undo_immutable = lambda: None
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# Linux
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try:
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subprocess.run(['chattr'], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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try:
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subprocess.run(['chattr', '+i', filename], capture_output=True, check=True)
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undo_immutable = lambda: subprocess.check_call(['chattr', '-i', filename])
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self.log.info("Made file immutable with chattr")
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except subprocess.CalledProcessError as e:
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self.log.warning(str(e))
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if e.stdout:
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self.log.warning(f"stdout: {e.stdout}")
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if e.stderr:
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self.log.warning(f"stderr: {e.stderr}")
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if os.getuid() == 0:
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self.log.warning("Return early on Linux under root, because chattr failed.")
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self.log.warning("This should only happen due to missing capabilities in a container.")
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self.log.warning("Make sure to --cap-add LINUX_IMMUTABLE if you want to run this test.")
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undo_immutable = False
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except Exception:
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# macOS, and *BSD
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try:
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subprocess.run(['chflags'], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
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try:
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subprocess.run(['chflags', 'uchg', filename], capture_output=True, check=True)
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undo_immutable = lambda: subprocess.check_call(['chflags', 'nouchg', filename])
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self.log.info("Made file immutable with chflags")
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except subprocess.CalledProcessError as e:
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self.log.warning(str(e))
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if e.stdout:
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self.log.warning(f"stdout: {e.stdout}")
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if e.stderr:
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self.log.warning(f"stderr: {e.stderr}")
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if os.getuid() == 0:
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self.log.warning("Return early on BSD under root, because chflags failed.")
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undo_immutable = False
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except Exception:
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pass
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if undo_immutable:
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self.log.debug("Attempt to restart and reindex the node with the unwritable block file")
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with self.nodes[0].assert_debug_log(["Reindexing finished"], timeout=60):
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self.start_node(0, extra_args=['-reindex', '-fastprune'])
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assert block_count == self.nodes[0].getblockcount()
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undo_immutable()
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filename.chmod(0o777)
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def run_test(self):
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self.reindex_readonly()
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if __name__ == '__main__':
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BlockstoreReindexTest(__file__).main()
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