diff --git a/SOURCES/0046-fix-skip-cbtlog-disks-in-commit-related-operations.patch b/SOURCES/0046-fix-skip-cbtlog-disks-in-commit-related-operations.patch
new file mode 100644
index 0000000..0a7a4b2
--- /dev/null
+++ b/SOURCES/0046-fix-skip-cbtlog-disks-in-commit-related-operations.patch
@@ -0,0 +1,64 @@
+From 7034c039d092ade9ce6eef37f1a249289fd42a88 Mon Sep 17 00:00:00 2001
+From: Mathieu Labourier <mathieu.labourier@vates.tech>
+Date: Mon, 17 Aug 2026 15:08:15 +0200
+Subject: [PATCH] fix: skip cbtlog disks in commit related operations
+
+This prevents a bug where tapdisk will return a cbtlog
+disk in commit related operations, causing them to fail early
+since the cbtlog driver doesn't include a commit action
+
+Signed-off-by: Mathieu Labourier <mathieu.labourier@vates.tech>
+---
+ drivers/tapdisk-vbd.c | 18 +++++++++++++++---
+ 1 file changed, 15 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/tapdisk-vbd.c b/drivers/tapdisk-vbd.c
+index 8fcabbbd..7b5171cd 100644
+--- a/drivers/tapdisk-vbd.c
++++ b/drivers/tapdisk-vbd.c
+@@ -167,6 +167,18 @@ tapdisk_vbd_first_image(td_vbd_t *vbd)
+ 	return image;
+ }
+ 
++static inline td_image_t *
++tapdisk_vbd_first_non_log_image(td_vbd_t *vbd)
++{
++	td_image_t *image = NULL, *tmp;
++
++	tapdisk_vbd_for_each_image(vbd, image, tmp)
++		if (image->type != DISK_TYPE_LOG)
++			return image;
++
++	return image;
++}
++
+ static inline td_image_t *
+ tapdisk_vbd_last_image(td_vbd_t *vbd)
+ {
+@@ -1146,7 +1158,7 @@ tapdisk_vbd_commit(td_vbd_t *vbd, const char *name)
+ 		INFO("commit %s\n", name);
+ 	}
+ 
+-	err = td_commit(tapdisk_vbd_first_image(vbd), name);
++	err = td_commit(tapdisk_vbd_first_non_log_image(vbd), name);
+ 
+ 	INFO("commit started (%d)\n", err);
+ 
+@@ -1162,7 +1174,7 @@ tapdisk_vbd_query_commit_job(td_vbd_t *vbd, td_query_t *query)
+ 		INFO("query commit job.\n");
+ 	}
+ 
+-	err = td_query_commit_job(tapdisk_vbd_first_image(vbd), query);
++	err = td_query_commit_job(tapdisk_vbd_first_non_log_image(vbd), query);
+ 
+ 	INFO("query commit job (%d)\n", err);
+ 
+@@ -1178,7 +1190,7 @@ tapdisk_vbd_cancel_commit_job(td_vbd_t *vbd, bool wait)
+ 		INFO("cancel commit job.\n");
+ 	}
+ 
+-	err = td_cancel_commit_job(tapdisk_vbd_first_image(vbd), wait);
++	err = td_cancel_commit_job(tapdisk_vbd_first_non_log_image(vbd), wait);
+ 
+ 	INFO("cancel commit job (%d)\n", err);
+ 
diff --git a/SPECS/blktap.spec b/SPECS/blktap.spec
index f0433e8..c047245 100644
--- a/SPECS/blktap.spec
+++ b/SPECS/blktap.spec
@@ -7,7 +7,7 @@
 Summary: blktap user space utilities
 Name: blktap
 Version: 3.55.5
-Release: %{?xsrel}.3%{?dist}
+Release: %{?xsrel}.4%{?dist}
 License: BSD AND GPL-2.0-or-later
 Group: System/Hypervisor
 URL: https://github.com/xapi-project/blktap
@@ -88,6 +88,7 @@ Patch1042: 0042-tapdisk-support-new-cancel-command.patch
 Patch1043: 0043-qcow2-support-cancel-command.patch
 Patch1044: 0044-libqcow2-fix-abort-commit-without-crash.patch
 Patch1045: 0045-feat-pass-error-details-up-to-tap-ctl.patch
+Patch1046: 0046-fix-skip-cbtlog-disks-in-commit-related-operations.patch
 
 %description
 Blktap creates kernel block devices which realize I/O requests to
@@ -217,6 +218,9 @@ without requiring other libraries
 %{_libdir}/libblockcrypto.so.*
 
 %changelog
+* Mon Aug 24 2026 Anthoine Bourgeois <anthoine.bourgeois@vates.tech> - 3.55.5-9.4
+- Filter cbtlog disk in coalesce commands to avoid ENOTSUPP error and un-coalescable VDIs.
+
 * Fri Jul 03 2026 Mathieu Labourier <mathieu.labourier@vates.tech> - 3.55.5-9.3
 - Pass error details up to tap-ctl.
   * The error printed by tap-ctl is now clearer and parsable for tools like SM.