v2 snapshot export errors #13346
Description
As reported by @hanabi1224 in https://filecoinproject.slack.com/archives/CPFTWMY7N/p1757556028301299
I saw some errors when exporting a v2 snapshot, any ideas what could go wrong? The ~/.lotus repo is in sync
➜ v2 lotus-shed -v && lotus-shed export --recent-stateroots 900 --skip-old-msgs lotus_v2.car
lotus-shed version 1.34.0-rc2+calibnet+git.c41477c95
2025-09-11T09:57:17.088+0800 ERROR lotus-shed lotus-shed/main.go:186 loading tipset:
github.com/filecoin-project/lotus/chain/store.(*ChainStore).loadHead
/home/me/git/lotus/chain/store/store.go:237
- get block bafy2bzacebxzep4losvn7vmhotyknyxpqjlriyncrxj5w5jcyc7ntgjvc7dx6:
github.com/filecoin-project/lotus/chain/store.(*ChainStore).LoadTipSet.func1
/home/me/git/lotus/chain/store/store.go:917
- ipld: could not find bafy2bzacebxzep4losvn7vmhotyknyxpqjlriyncrxj5w5jcyc7ntgjvc7dx6
➜ ~ lotus chain list --count 3
3007653: (Sep 11 09:59:30) [ bafy2bzacebspb35y2qtuc6zac775lb5h7rdg5vkogx5z7mxkgu4yfzin7sy6i: t0135498,bafy2bzacecdg532qeiflifdwkaaxcymsfycpyg2e6osodnyf4cn2f6b5bgt5o: t0143103,bafy2bzacedc663rwpxb7bk4f6ltfqrcxrusb34amjpz4zysjvyooxkbhg4tki: t017840, ]
3007654: (Sep 11 10:00:00) [ bafy2bzacebm5qm6kfjedeq5r3ujyqchea6rml3ec2pnpzxgxwt72egdvlo774: t0155502,bafy2bzaceaqxxpagfeafe5qxwlejpu3mgfwwljtavttuyfe2gtlwwslzhflrc: t0143103, ]
3007655: (Sep 11 10:00:30) [ bafy2bzacedvgqzndkog22hkt7ogqyd53bsob2qlyfjpx7uvkk2kijo6gfci7e: t0143103, ]
Impact:
- This is blocking him from testing importing Lotus-generated v2 snapshot into Forest.
- This doesn't block the nv27 upgrade train as Lotus can successfully import Forest-generated v2 snapshots, which is what will be happening in production.
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