diff --git a/Cargo.lock b/Cargo.lock
index ef204a272..83d82cfdf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -826,7 +826,7 @@ checksum = "248e3bacc7dc6baa3b21e405ee045c3047101a49145e7e9eca583ab4c2ca5345"
 [[package]]
 name = "crucible"
 version = "0.0.1"
-source = "git+https://github.com/oxidecomputer/crucible?rev=da3cf198a0e000bb89efc3a1c77d7ba09340a600#da3cf198a0e000bb89efc3a1c77d7ba09340a600"
+source = "git+https://github.com/oxidecomputer/crucible?rev=2c8b2aeffca9ab377dacee4557c2cc994694b00d#2c8b2aeffca9ab377dacee4557c2cc994694b00d"
 dependencies = [
  "aes-gcm-siv",
  "anyhow",
@@ -842,6 +842,7 @@ dependencies = [
  "crucible-protocol",
  "crucible-workspace-hack",
  "dropshot",
+ "fakedata_generator",
  "futures",
  "futures-core",
  "internal-dns-resolver",
@@ -879,7 +880,7 @@ dependencies = [
 [[package]]
 name = "crucible-client-types"
 version = "0.1.0"
-source = "git+https://github.com/oxidecomputer/crucible?rev=da3cf198a0e000bb89efc3a1c77d7ba09340a600#da3cf198a0e000bb89efc3a1c77d7ba09340a600"
+source = "git+https://github.com/oxidecomputer/crucible?rev=2c8b2aeffca9ab377dacee4557c2cc994694b00d#2c8b2aeffca9ab377dacee4557c2cc994694b00d"
 dependencies = [
  "base64 0.22.1",
  "crucible-workspace-hack",
@@ -892,7 +893,7 @@ dependencies = [
 [[package]]
 name = "crucible-common"
 version = "0.0.1"
-source = "git+https://github.com/oxidecomputer/crucible?rev=da3cf198a0e000bb89efc3a1c77d7ba09340a600#da3cf198a0e000bb89efc3a1c77d7ba09340a600"
+source = "git+https://github.com/oxidecomputer/crucible?rev=2c8b2aeffca9ab377dacee4557c2cc994694b00d#2c8b2aeffca9ab377dacee4557c2cc994694b00d"
 dependencies = [
  "anyhow",
  "atty",
@@ -921,7 +922,7 @@ dependencies = [
 [[package]]
 name = "crucible-protocol"
 version = "0.0.0"
-source = "git+https://github.com/oxidecomputer/crucible?rev=da3cf198a0e000bb89efc3a1c77d7ba09340a600#da3cf198a0e000bb89efc3a1c77d7ba09340a600"
+source = "git+https://github.com/oxidecomputer/crucible?rev=2c8b2aeffca9ab377dacee4557c2cc994694b00d#2c8b2aeffca9ab377dacee4557c2cc994694b00d"
 dependencies = [
  "anyhow",
  "bincode",
@@ -1494,6 +1495,18 @@ dependencies = [
  "similar",
 ]
 
+[[package]]
+name = "fakedata_generator"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57b82fba4b485b819fde74012109688a9d2bd4ce7b22583ac12c9fa239f74a02"
+dependencies = [
+ "passt",
+ "rand 0.8.5",
+ "serde",
+ "serde_json",
+]
+
 [[package]]
 name = "fastrand"
 version = "2.1.0"
@@ -3969,6 +3982,12 @@ dependencies = [
  "syn 2.0.100",
 ]
 
+[[package]]
+name = "passt"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "13242a5ce97f39a8095d03c8b273e91d09f2690c0b7d69a2af844941115bab24"
+
 [[package]]
 name = "password-hash"
 version = "0.5.0"
diff --git a/Cargo.toml b/Cargo.toml
index df7cccd2a..9cf35e528 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -86,8 +86,8 @@ oximeter = { git = "https://github.com/oxidecomputer/omicron", branch = "main" }
 sled-agent-client = { git = "https://github.com/oxidecomputer/omicron", branch = "main" }
 
 # Crucible
-crucible = { git = "https://github.com/oxidecomputer/crucible", rev = "da3cf198a0e000bb89efc3a1c77d7ba09340a600" }
-crucible-client-types = { git = "https://github.com/oxidecomputer/crucible", rev = "da3cf198a0e000bb89efc3a1c77d7ba09340a600" }
+crucible = { git = "https://github.com/oxidecomputer/crucible", rev = "2c8b2aeffca9ab377dacee4557c2cc994694b00d" }
+crucible-client-types = { git = "https://github.com/oxidecomputer/crucible", rev = "2c8b2aeffca9ab377dacee4557c2cc994694b00d" }
 
 # External dependencies
 anyhow = "1.0"
@@ -107,7 +107,7 @@ cargo_metadata = "0.18.1"
 cc = "1.0.73"
 cfg-if = "1.0.0"
 chrono = "0.4.19"
-clap = "4.2"
+clap = "4.5"
 const_format = "0.2"
 crossbeam-channel = "0.5"
 ctrlc = "3.2"
diff --git a/bin/propolis-server/src/lib/vm/state_driver.rs b/bin/propolis-server/src/lib/vm/state_driver.rs
index 22354578f..f12faa1e3 100644
--- a/bin/propolis-server/src/lib/vm/state_driver.rs
+++ b/bin/propolis-server/src/lib/vm/state_driver.rs
@@ -1014,7 +1014,7 @@ impl StateDriver {
         backend_id: &SpecKey,
         new_vcr_json: String,
     ) -> super::CrucibleReplaceResult {
-        info!(self.log, "request to replace Crucible VCR";
+        info!(self.log, "request to replace Crucible VCR {:?}", new_vcr_json;
               "backend_id" => %backend_id);
 
         let mut objects = self.objects.lock_exclusive().await;