[server] Try to clean up after performance testsisfant

5 files changed, 151 insertions, 4 deletions

diff --git a/contrib/iscsi-destroy/.gitignore b/contrib/iscsi-destroy/.gitignore
new file mode 100644
index 0000000..efcc916
--- /dev/null
+++ b/contrib/iscsi-destroy/.gitignore
@@ -0,0 +1 @@
+iscsi-destroy
diff --git a/contrib/iscsi-destroy/go.mod b/contrib/iscsi-destroy/go.mod
new file mode 100644
index 0000000..c61c9a6
--- /dev/null
+++ b/contrib/iscsi-destroy/go.mod
@@ -0,0 +1,11 @@
+module iscsi-destroy
+
+go 1.24.10
+
+require github.com/u-root/iscsinl v0.1.0
+
+require (
+	github.com/vishvananda/netlink v1.1.0 // indirect
+	github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df // indirect
+	golang.org/x/sys v0.0.0-20200121082415-34d275377bf9 // indirect
+)
diff --git a/contrib/iscsi-destroy/go.sum b/contrib/iscsi-destroy/go.sum
new file mode 100644
index 0000000..14059e8
--- /dev/null
+++ b/contrib/iscsi-destroy/go.sum
@@ -0,0 +1,85 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
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+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
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+github.com/vishvananda/netlink v1.1.0/go.mod h1:cTgwzPIzzgDAYoQrMm0EdrjRUBkTqKYppBueQtXaqoE=
+github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df h1:OviZH7qLw/7ZovXvuNyL3XQl8UFofeikI1NW1Gypu7k=
+github.com/vishvananda/netns v0.0.0-20191106174202-0a2b9b5464df/go.mod h1:JP3t17pCcGlemwknint6hfoeCVQrEMVwxRLRjXpq+BU=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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diff --git a/contrib/iscsi-destroy/main.go b/contrib/iscsi-destroy/main.go
new file mode 100644
index 0000000..0227c9d
--- /dev/null
+++ b/contrib/iscsi-destroy/main.go
@@ -0,0 +1,39 @@
+// Source: https://github.com/open-iscsi/open-iscsi/issues/228#issuecomment-715770988
+
+package main
+
+import (
+    "os"
+    "fmt"
+    "strconv"
+    "github.com/u-root/iscsinl"
+)
+
+func main() {
+   ipc, err := iscsinl.ConnectNetlink()
+
+   if err != nil {
+       fmt.Printf("Error connecting to netlink: %s\n", err)
+       return
+   }
+
+   sid, _ := strconv.Atoi(os.Args[1])
+
+   err = ipc.StopConnection(uint32(sid), 0)
+
+   if err != nil {
+       fmt.Printf("Error stopping connection: %s\n", err)
+   }
+
+   err = ipc.DestroyConnection(uint32(sid), 0)
+
+   if err != nil {
+       fmt.Printf("Error destroying connection: %s\n", err)
+   }
+
+   err = ipc.DestroySession(uint32(sid))
+
+   if err != nil {
+       fmt.Printf("Error destroying session: %s\n", err)
+   }
+}
diff --git a/contrib/test-performance b/contrib/test-performance
index af244d7..c8efc07 100755
--- a/contrib/test-performance
+++ b/contrib/test-performance
@@ -1,26 +1,27 @@
 #!/bin/sh -x
 selfDir="$(dirname -- "$(realpath -- "$0")")"
 
-data="/tmp"
+data="$(mktemp -d)"
 config="$selfDir/../pkg/config"
 
-mkdir -p -- "$data"
 mount -t tmpfs -- / "$data"
 truncate -s 10G -- "$data/test.r1"
 
 sed -Ei "s#^basePath=.*#basePath=$(realpath -- "$data")#" -- "$config/server.conf"
 cat -- "$config/server.conf"
 
-"$selfDir/../src/server/dnbd3-server" -nc "$config" &
+"$selfDir/../src/server/dnbd3-server" -nc "$config" & pid="$!"
 while ! grep -qF ":$(printf %04X 5003)" /proc/net/tcp; do sleep 1; done
 
 modprobe iscsi_tcp
 iscsistart -i initiator -g 1 -p 5003 -a 127.0.0.1 -t test
-device="$(basename -- /sys/class/iscsi_session/session*/device/target*/*/block/*)"
+deviceSysfs="$(printf %s /sys/class/iscsi_session/session*/device/target*/*/block/*)"
+device="$(basename -- "$deviceSysfs")"
 sleep 3
 
 echo "<plaintext>" > performance.html
 (
+    uname -a
     iscsi-perf -t 5 iscsi://localhost:5003/test/0
     dd status=progress if="/dev/$device" of=/dev/null
     dd status=progress if="/dev/$device" of=/dev/null bs=1M
@@ -28,3 +29,13 @@ echo "<plaintext>" > performance.html
 ) 2>&1 | tee -a performance.html
 
 dmesg
+
+# echo 1 >"$deviceSysfs/../../delete"
+
+kill -- "$pid"
+umount -l -- "$data"
+
+sessionId="${deviceSysfs%%/device/*}"
+sessionId="${sessionId##*/session}"
+test -e "$selfDir/iscsi-destroy/iscsi-destroy" || go -C "$selfDir/iscsi-destroy" build
+"$selfDir/iscsi-destroy/iscsi-destroy" "$sessionId" || :