LU-6050 target: control OST-index in IDIF via ROCOMPAT flag

[fs/lustre-release.git] / lustre / ChangeLog

diff --git a/lustre/ChangeLog b/lustre/ChangeLog
index eb5b890..b1abe71 100644 (file)
--- a/lustre/ChangeLog
+++ b/lustre/ChangeLog
@@ -3,13 +3,14 @@ TBD Intel Corporation
        * See https://wiki.hpdd.intel.com/display/PUB/Lustre+Support+Matrix
          for currently supported client and server kernel versions.
        * Server known to build on patched kernels:
-         2.6.32-431.23.3.el6 (RHEL6.5)
-         3.0.101-0.35        (SLES11 SP3)
+         2.6.32-431.29.2.el6 (RHEL6.5)
+         2.6.32-504.8.1.el6  (RHEL6.6)
+         3.0.101-0.46        (SLES11 SP3)
        * Client known to build on unpatched kernels:
-         2.6.32-431.23.3.el6 (RHEL6.5)
-         3.0.101-0.35        (SLES11 SP3)
-         3.6.10-4.fc18       (FC18)
-         3.10                (kernel.org)
+         2.6.32-431.29.2.el6 (RHEL6.5)
+         2.6.32-504.8.1.el6  (RHEL6.6)
+         3.10.0-123.20.1.el7 (RHEL7)
+         3.0.101-0.46        (SLES11 SP3)
        * Recommended e2fsprogs version: 1.42.9.wc1 or newer
        * NFS export disabled when stack size < 8192 (32-bit Lustre clients),
          since the NFSv4 export of Lustre filesystem with 4K stack may cause a
@@ -17,6 +18,20 @@ TBD Intel Corporation
        * NFSv4 reexport to 32-bit NFS client nodes requires Lustre client on
          the re-exporting nodes to be mounted with "32bitapi" mount option
 
+Severity   : enhancement
+Jira       : LU-6050
+Description: control OST-index in IDIF via  ROCOMPAT flag.
+Details    : Introduce new flag OBD_ROCOMPAT_IDX_IN_IDIF that is stored in the
+            last_rcvd file. For new formatted OST device, it will be auto set;
+            for the case of upgrading from old OST device, you can enable it
+            via the lproc interface osd-ldiskfs.index_in_idif. With such flag
+            enabled, for new created OST-object, its IDIF-in-LMA will contain
+            the OST-index; for the existing OST-object, the OSD will convert
+            old format IDIF as new format IDIF with OST-index stored in the
+            LMA EA when accessing such OST-object or via OI scrub. Once such
+            flag is enabled, it cannot be reverted back, so the system cannot
+            be downgraded to the orignal incompatible version.
+
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 07-30-2014 Intel Corporation