chore: small snapshot commands & docs improvement (#16404)

(cherry picked from commit b590b09)

# Conflicts:
#	client/snapshot/export.go
#	server/cmt_cmds.go

client/snapshot/cmd.go

@@ -10,7 +10,6 @@ func Cmd(appCreator servertypes.AppCreator) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "snapshots",
 		Short: "Manage local snapshots",
-		Long:  "Manage local snapshots",
 	}
 	cmd.AddCommand(
 		ListSnapshotsCmd,

client/snapshot/export.go

@@ -1,8 +1,12 @@
 package snapshot
 
 import (
+<<<<<<< HEAD
 	"fmt"
 
+=======
+	"cosmossdk.io/log"
+>>>>>>> b590b0910 (chore: small snapshot commands & docs improvement (#16404))
 	"github.com/cosmos/cosmos-sdk/server"
 	servertypes "github.com/cosmos/cosmos-sdk/server/types"
 	"github.com/spf13/cobra"
@@ -33,15 +37,15 @@ func ExportSnapshotCmd(appCreator servertypes.AppCreator) *cobra.Command {
 				height = app.CommitMultiStore().LastCommitID().Version
 			}
 
-			fmt.Printf("Exporting snapshot for height %d\n", height)
+			cmd.Printf("Exporting snapshot for height %d\n", height)
 
 			sm := app.SnapshotManager()
 			snapshot, err := sm.Create(uint64(height))
 			if err != nil {
 				return err
 			}
 
-			fmt.Printf("Snapshot created at height %d, format %d, chunks %d\n", snapshot.Height, snapshot.Format, snapshot.Chunks)
+			cmd.Printf("Snapshot created at height %d, format %d, chunks %d\n", snapshot.Height, snapshot.Format, snapshot.Chunks)
 			return nil
 		},
 	}

client/snapshot/list.go

@@ -22,7 +22,7 @@ var ListSnapshotsCmd = &cobra.Command{
 			return fmt.Errorf("failed to list snapshots: %w", err)
 		}
 		for _, snapshot := range snapshots {
-			fmt.Println("height:", snapshot.Height, "format:", snapshot.Format, "chunks:", snapshot.Chunks)
+			cmd.Println("height:", snapshot.Height, "format:", snapshot.Format, "chunks:", snapshot.Chunks)
 		}
 
 		return nil

client/snapshot/load.go

@@ -22,7 +22,7 @@ const SnapshotFileName = "_snapshot"
 func LoadArchiveCmd() *cobra.Command {
 	return &cobra.Command{
 		Use:   "load <archive-file>",
-		Short: "Load a snapshot archive file into snapshot store",
+		Short: "Load a snapshot archive file (.tar.gz) into snapshot store",
 		Args:  cobra.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			ctx := server.GetServerContextFromCmd(cmd)
@@ -70,7 +70,7 @@ func LoadArchiveCmd() *cobra.Command {
 
 				savedSnapshot, err := snapshotStore.Save(snapshot.Height, snapshot.Format, chunks)
 				if err != nil {
-					fmt.Println("failed to save snapshot", err)
+					cmd.Println("failed to save snapshot", err)
 					return
 				}
 				quitChan <- savedSnapshot

docs/docs/run-node/01-run-node.md

@@ -152,12 +152,41 @@ log_level: "state:info,p2p:info,consensus:info,x/staking:info,x/ibc:info,*error"
 
 ## State Sync
 
-State sync is the act in which a node syncs the latest or close to the latest state of a blockchain. This is useful for users who don't want to sync all the blocks in history. You can read more here: https://docs.cometbft.com/v0.37/core/state-sync
+State sync is the act in which a node syncs the latest or close to the latest state of a blockchain. This is useful for users who don't want to sync all the blocks in history. Read more in [CometBFT documentation](https://docs.cometbft.com/v0.37/core/state-sync).
+
+State sync works thanks to snapshots. Read how the SDK handles snapshots [here](https://github.com/cosmos/cosmos-sdk/blob/825245d/store/snapshots/README.md).
 
 ### Local State Sync
 
 Local state sync work similar to normal state sync except that it works off a local snapshot of state instead of one provided via the p2p network. The steps to start local state sync are similar to normal state sync with a few different designs. 
 
 1. As mentioned in https://docs.cometbft.com/v0.37/core/state-sync, one must set a height and hash in the config.toml along with a few rpc servers (the afromentioned link has instructions on how to do this). 
-2. Bootsrapping Comet state in order to start the node after the snapshot has been ingested. This can be done with the bootstrap command `<app> comet bootstrap-state`
-<!-- 3. TODO after https://github.com/cosmos/cosmos-sdk/pull/16060 is merged -->
+2. Run `<appd snapshot restore <height> <format>` to restore a local snapshot (note: first load it from a file with the *load* command). 
+3. Bootsrapping Comet state in order to start the node after the snapshot has been ingested. This can be done with the bootstrap command `<app> comet bootstrap-state`
+
+### Snapshots Commands
+
+The Cosmos SDK provides commands for managing snapshots.
+These commands can be added in an app with the following snippet in `cmd/<app>/root.go`:
+
+```go
+import (
+  "github.com/cosmos/cosmos-sdk/client/snapshot"
+)
+
+func initRootCmd(/* ... */) {
+  // ...
+  rootCmd.AddCommand(
+    snapshot.Cmd(appCreator),
+  )
+}
+```
+
+Then following commands are available at `<appd> snapshots [command]`:
+
+* **list**: list local snapshots
+* **load**: Load a snapshot archive file into snapshot store
+* **restore**: Restore app state from local snapshot
+* **export**:  Export app state to snapshot store
+* **dump**: Dump the snapshot as portable archive format
+* **delete**: Delete a local snapshot

go.mod

@@ -177,7 +177,7 @@ replace (
 	// Fix upstream GHSA-h395-qcrw-5vmq and GHSA-3vp4-m3rf-835h vulnerabilities.
 	// TODO Remove it: https://github.com/cosmos/cosmos-sdk/issues/10409
 	github.com/gin-gonic/gin => github.com/gin-gonic/gin v1.9.0
-	// Downgraded to avoid bugs in following commits which caused simulations to fail.
+	// replace broken goleveldb
 	github.com/syndtr/goleveldb => github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7
 )