Is there an existing issue for this?
- I have searched the existing issues
Current behaviour
IBD/chainstate gets stuck if utxo_snapshot.sh fails. No new blocks are downloaded. Restarting bitcoind does not help. Taking another snapshot at an earlier height or reindex is required to repair.
utxo_snapshot.sh output:
0Rewinding chain back to height 788440 (by invalidating 000000000000000000052ac0ce9b8f1a2e7691771e6386f770432c9443dc2af7); this may take a while
1Generating UTXO snapshot...
2error code: -8
3error message:
4/home/chris/Desktop/assumeutxo/test/utxo-788440.dat already exists. If you are sure this is what you want, move it out of the way first
Note that moving the file or choosing another filename and rerunning does not fix. But taking another snapshot at an earlier height will.
Expected behaviour
If utxo_snapshot.sh fails, bitcoind should cancel rewind and recover.
Also, if a filepath that already exists is passed to utxosnapshot.sh, it should early exit before rewinding. This could perhaps be considered a separate issue.
Steps to reproduce
- Create a dummy file for the purpose of the test e.g.
echo "some bytes so file is not empty" > ./utxo-788440.dat - Run bitcoind and wait for it to sync
- Run utxosnapshot.sh with some blockheight and a filepath that already exists e.g.
./contrib/devtools/utxo_snapshot.sh 788440 ./utxo-788440.dat ./src/bitcoin-cli - Wait for chain rewind to happen, snapshot to be generated and write to disk fail
- Observe bitcoind is now stuck with an invalid block at the rewind height
Relevant log output
02023-06-08T23:51:50Z [httpworker.3] UpdateTip: new best=000000000000000000014a9d36f6a19aca593f0c228ae1b1b6fe33361fa67be1 height=788440 version=0x2001e000 log2_work=94.162204 tx=832727241 date='2023-05-06T02:54:13Z' progress=0.987258 cache=790.3MiB(1245160txo)
12023-06-08T23:51:50Z [httpworker.3] InvalidChainFound: invalid block=000000000000000000052ac0ce9b8f1a2e7691771e6386f770432c9443dc2af7 height=788441 log2_work=94.162217 date=2023-05-06T02:55:43Z
22023-06-08T23:51:50Z [httpworker.3] InvalidChainFound: current best=000000000000000000014a9d36f6a19aca593f0c228ae1b1b6fe33361fa67be1 height=788440 log2_work=94.162204 date=2023-05-06T02:54:13Z
0Rewinding chain back to height 788440 (by invalidating 000000000000000000052ac0ce9b8f1a2e7691771e6386f770432c9443dc2af7); this may take a while
1Generating UTXO snapshot...
2error code: -8
3error message:
4/home/chris/Desktop/assumeutxo/test/utxo-788440.dat already exists. If you are sure this is what you want, move it out of the way first
How did you obtain Bitcoin Core
Compiled from source
What version of Bitcoin Core are you using?
v25.99.0-3dc6fd620e28
Operating system and version
Linux 6.3.1-arch2-1
Machine specifications
No response
