NEWS.md: add section about PR changes

Author: mwilck

.github/actions/spelling/expect.txt

@@ -57,6 +57,7 @@ dracut
 EAGAIN
 emc
 Engenio
+Equal
 EVPD
 failback
 failover
@@ -92,6 +93,7 @@ ifndef
 igroup
 img
 Infini
+Infinidat
 inotify
 inttypes
 ioctls
@@ -142,6 +144,7 @@ NOLOG
 nompath
 NOSCAN
 Nosync
+NVMe
 nvme
 NFINIDAT
 OBJDEPS
@@ -167,6 +170,7 @@ prioritizer
 prkeys
 PROUT
 pthreads
+QSAN
 rdac
 rdma
 readcap
@@ -180,7 +184,7 @@ reconfig
 redhat
 restorequeueing
 retrigger
-RETRYABLE
+retryable
 rhabarber
 rootprefix
 rootprefixdir
@@ -193,7 +197,6 @@ sbp
 scsi
 SCST
 sda
-sdc
 Seagate
 setmarginal
 setprkey
@@ -217,7 +220,6 @@ switchgroup
 sys
 sysfs
 sysinit
-systemd
 tcp
 terabytes
 SYSDIR
@@ -237,6 +239,7 @@ udevd
 uevent
 uid
 unitdir
+unregistering
 unsetmarginal
 unsetprkey
 unsetprstatus
@@ -255,7 +258,6 @@ VNX
 vpd
 VSN
 wakka
-watchdogsec
 weightedpath
 wholedisk
 Wilck

NEWS.md

@@ -9,6 +9,48 @@ release. These bug fixes will be tracked in stable branches.
 
 See [README.md](README.md) for additional information.
 
+## multipath-tools 0.13.0, 2025/xx
+
+### Major rework of the SCSI Persistent Reservation code
+
+The mpathpersist code had many areas where it did a poor job of
+mimicking the behavior of setting up persistent reservations on an
+individual device, especially if paths to the multipath device are
+missing or unusable.
+
+Issues improved in this release:
+
+* Changing or unregistering a key held by an unavailable path that also
+  holds the reservation. This is done by preempting the old key,
+  after verifying that the multipath device is holding the reservation.
+* Releasing a reservation held by an unavailable path. This has always
+  had code to handle it, but it relied on optional Persistent
+  Reservation features. The new code preempts the key and then restores
+  the removed registered keys while the device is suspended.
+* Handling removal of keys from paths that were down when the multipath
+  device was unregistered.
+* Changing how conflicts on key registration are handled. Instead of
+  the current rollback method (which was broken anyway),
+  libmpathpersist now retries with REGISTER AND IGNORE as long as the
+  REGISTER command completed successfully down some of the paths.
+* Changing when the reservation key is set to fix corner cases on
+  failure and registration while paths are coming up.
+* Retrying to fix corner cases when a path is coming up while a doing a
+  reserve, preempt or clear.
+* Allowing registrations to succeed when there are retryable errors,
+  if the paths are actually down.
+* Fixing the reservation key validation some commands.
+* Handling a race condition that may occur while changing the reservation key
+  of a multipath map.
+* Correctly handle preemption of registrations of type "all registrants".
+
+### Other changes
+
+* Updates to the built-in hardware table:
+  - add some NVMe storage array (VASTData, Infinidat, HITACHI VSP)
+  - add QSAN
+  - add EqualLogic PS
+
 ## multipath-tools 0.12.0, 2025/08
 
 ### User-visible changes