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Thread-Topic: [PATCH v2 0/2] enhance NFSv4.2 SSC to delay unmount source's export. 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charset="us-ascii" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: oracle.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: SJ0PR10MB4688.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: f3029311-e3d8-42ea-b5df-08d8f936530c X-MS-Exchange-CrossTenant-originalarrivaltime: 06 Apr 2021 19:58:18.8632 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: PBXdyr8l9G6HLQrk2YERml7IyW35g05JqijKvFUutEYEyyFdYJmWsp0KnnPg+Qy0eqzRZYD7HcTOnSs+egB1ug== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR10MB4814 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9946 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 mlxlogscore=999 malwarescore=0 mlxscore=0 suspectscore=0 adultscore=0 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104060000 definitions=main-2104060135 X-Proofpoint-ORIG-GUID: VOz12P84Rh1HgyuHLNyK7sWJhE3Iubhc X-Proofpoint-GUID: VOz12P84Rh1HgyuHLNyK7sWJhE3Iubhc X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=9946 signatures=668683 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 lowpriorityscore=0 priorityscore=1501 suspectscore=0 phishscore=0 mlxlogscore=999 spamscore=0 malwarescore=0 mlxscore=0 bulkscore=0 impostorscore=0 adultscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104060000 definitions=main-2104060134 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org > On Apr 6, 2021, at 3:57 PM, Olga Kornievskaia wrote: >=20 > On Tue, Apr 6, 2021 at 3:43 PM Chuck Lever III w= rote: >>=20 >>=20 >>=20 >>> On Apr 6, 2021, at 3:41 PM, Olga Kornievskaia wrote: >>>=20 >>> On Tue, Apr 6, 2021 at 12:33 PM Chuck Lever III wrote: >>>>=20 >>>>=20 >>>>=20 >>>>> On Apr 2, 2021, at 7:30 PM, Dai Ngo wrote: >>>>>=20 >>>>> Hi, >>>>>=20 >>>>> Currently the source's export is mounted and unmounted on every >>>>> inter-server copy operation. This causes unnecessary overhead >>>>> for each copy. >>>>>=20 >>>>> This patch series is an enhancement to allow the export to remain >>>>> mounted for a configurable period (default to 15 minutes). If the >>>>> export is not being used for the configured time it will be unmounted >>>>> by a delayed task. If it's used again then its expiration time is >>>>> extended for another period. >>>>>=20 >>>>> Since mount and unmount are no longer done on each copy request, >>>>> this overhead is no longer used to decide whether the copy should >>>>> be done with inter-server copy or generic copy. The threshold used >>>>> to determine sync or async copy is now used for this decision. >>>>>=20 >>>>> -Dai >>>>>=20 >>>>> v2: fix compiler warning of missing prototype. >>>>=20 >>>> Hi Olga- >>>>=20 >>>> I'm getting ready to shrink-wrap the initial NFSD v5.13 pull request. >>>> Have you had a chance to review Dai's patches? >>>=20 >>> Hi Chuck, >>>=20 >>> I apologize I haven't had the chance to review/test it yet. Can I have >>> until tomorrow evening to do so? >>=20 >> Next couple of days will be fine. Thanks! >>=20 >=20 > I also assumed there would be a v2 given that kbot complained about > the NFSD patch. This is the v2 (see Subject: ) -- Chuck Lever