From efaa46d7cd276e72c3b5709f3668675851caca13 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=9B=D0=B5=D0=BE=D0=BD=D0=B8=D0=B4=20=D0=AE=D1=80=D1=8C?=
 =?UTF-8?q?=D0=B5=D0=B2=20=28Leonid=20Yuriev=29?= <leo@yuriev.ru>
Date: Sun, 17 Nov 2024 10:24:03 +0300
Subject: [PATCH] =?UTF-8?q?mdbx:=20=D0=BF=D1=80=D0=B5=D0=B4=D0=BE=D1=82?=
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 =?UTF-8?q?=20`copy2fd()`.?=
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---
 src/copy.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/copy.c b/src/copy.c
index fd3cdc2e..ad80a815 100644
--- a/src/copy.c
+++ b/src/copy.c
@@ -762,10 +762,12 @@ __cold static int copy2fd(MDBX_txn *txn, mdbx_filehandle_t fd,
       rc = mdbx_txn_unpark(txn, false);
   }
 
-  if (flags & MDBX_CP_THROTTLE_MVCC)
-    mdbx_txn_park(txn, true);
-  else if (flags & MDBX_CP_DISPOSE_TXN)
-    mdbx_txn_reset(txn);
+  if (txn->flags & MDBX_TXN_RDONLY) {
+    if (flags & MDBX_CP_THROTTLE_MVCC)
+      mdbx_txn_park(txn, true);
+    else if (flags & MDBX_CP_DISPOSE_TXN)
+      mdbx_txn_reset(txn);
+  }
 
   if (!dest_is_pipe) {
     if (likely(rc == MDBX_SUCCESS) && (flags & MDBX_CP_DONT_FLUSH) == 0)