Upgrade cosmos-sdk v0.50 get error "failed to find capability for ibc chanels in ica module"

[ledanghuy1811]

Context

Before we run upgrade to cosmos-sdk v0.50 in our mainnet, we fork current mainnet to a testnet with fully data of our mainnet. The purpose of this is that we want to upgrade in our fork-mainnet (testnet) first to see if we got error.

We run e2e-upgrade script first to check if there is error or not and it work without errors but when we try to upgrade to cosmos-sdk v0.50 in our testnet, the error is show up:

To Reproduce

Steps to reproduce the behavior:

1. Need to fork mainnet and run node
2. Clone our old repo and build oraid binary
3. Try to make proposal to upgrade fork-mainnet
4. Clone this repo and checkout to this commit
5. Build new binary and re run node to see error

Expected behavior

The upgrade process pass and node start to commit block.

Additional context

• The error is come from this method https://github.com/cosmos/ibc-go/blob/8479edf4d0d3f93ad5138952ae74859d7ba33f74/modules/apps/27-interchain-accounts/module.go#L146, RegisterServices
• In the above function, when it reach line 158, it will call AssertChannelCapabilityMigrations function and the error show up when the return of capability for chanel is nil

[ledanghuy1811]

After debuging, we found that in old version of our chain, the capability of ibc chanels is empty (nil). Then when run migrate for chain, it will reach this error.

[ledanghuy1811]

To fix this error, in upgrade handler of our chain, we try to find that which ibc chanels don't have capability and we create new capability for them.

Fixed in here