Received-SPF: pass (google.com: domain of linux-nfs-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Trond Myklebust <trondmy@hammerspace.com>
To:     "neilb@suse.de" <neilb@suse.de>
CC:     "linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>
Subject: Re: NFS access problems when group membership changes on server
Thread-Topic: NFS access problems when group membership changes on server
Thread-Index: AQHYLr+3CeZUt7iAdUWYTyXSboQv6ayt0KQA
Date:   Thu, 3 Mar 2022 15:55:15 +0000
Message-ID: <c834d47c685d2c6a227846f31ba259b893fcbf73.camel@hammerspace.com>
References: <164628537738.17899.2312723585718867242@noble.neil.brown.name>
In-Reply-To: <164628537738.17899.2312723585718867242@noble.neil.brown.name>
Accept-Language: en-US, en-GB
Content-Language: en-US
x-ms-exchange-antispam-messagedata-chunkcount: 1
x-ms-exchange-antispam-messagedata-0: =?utf-8?B?ZUt0SC8vSWJQeVUxdkh0clhCczhaTk5sQU5iODFjU0x1SEYwdWsrZ1pHN0hQ?=
 =?utf-8?B?TXdMMkRVTm9oYzVUWVBLYzA2N2ZtOWxGc2xJa1pBUW5lUjJ5T0FsaVFydW02?=
 =?utf-8?B?V09uc3lidHFRbGorWjNaaE1aVzdoYXdILzEwUUdMSHBQZHFyK2ZqeWxTME5L?=
 =?utf-8?B?Q2xmRGRSMjdzNkg4T1RwRTRSZ0doUjRNeFh6cjkrYWhyYWU5eW1nd00zT2dN?=
 =?utf-8?B?cmswOHJzWENYbVlRZjlrcWcrUXlRTCt6eTZSejRmMGVSNkMyQ01DUlhGUWFE?=
 =?utf-8?B?S1lYcnF2UzBUY1NFNnoyOEpoUzgxZk56cDhCODYxMHZQL3VWZEI1ZjZQMzI2?=
 =?utf-8?B?QWR1Rkx2T3E0cTZzQkZRRGdhZ3A4b3JISkE2dHYyRjlMZXdOMlc2S0RIc3g0?=
 =?utf-8?B?V3o5blJ5eVFtdGVFMk5BV3JCOHE2SW9DNElrYmtpMnlSeWhmVFRYVll4NlR6?=
 =?utf-8?B?emhqVXZ2T1o3M2lIZHVPRXFVZVJxcG04QVJiNGpMQWc3cUdyb2wvaFcvWHg5?=
 =?utf-8?B?R0JPNEkvS0c2UC9ncUE5YmlYczQyR3R3MWg1Vk5JT3R5T2d4M29jM2RhNUZF?=
 =?utf-8?B?ZWhmdERGMTZlUzI5SnB3dlFucG91ckx2UExmWjZVbXRqMUVURWpGZTRhNE9H?=
 =?utf-8?B?cG1hUitObE5XcUpkVlp4L3dVRit6YjlnbFllS1VwcEYwVWE4WUQzSW9icXRI?=
 =?utf-8?B?TVo1N25vV1hVbmVCNU5jdkZpK2s1K2pWZFZ1L3ViaWpFREdmUWt5b1U2NWNK?=
 =?utf-8?B?ZnNmQkF6TU1mVDNpRXV4QXdWUEQzYS82bmVla3RON0MwY2FmTjVHN2VxMU5D?=
 =?utf-8?B?Z0Joa1Z2c3ZxWFVGWW1YMDlMaXFkcVI2K3l2ZUtEbCtyVTBIZTB0L2NXVzY5?=
 =?utf-8?B?NkxEVXpHVUdiNTRuRHU0UVJxdk5JM3pvZng3UkJtRGtRUkxyQ2xOOEpMT2M1?=
 =?utf-8?B?Mk43MnhIVmlMU3J6dEFuU242bHdxdWNSOGszRkxDcTZ3UlQydm50N294VlV6?=
 =?utf-8?B?d1p5MURNUTNkRmJJWjNnY25jMEpHSHhzNS9nc3FtZnRaU0QvNFZMTTBpV0dv?=
 =?utf-8?B?eFhPand5MWtiUXl1N3lranFTRFo5RW1YbmJnOUN3cjlGcU9LRGRUWkt6ZHEw?=
 =?utf-8?B?QXlVdVpnUzJxNU15aXlzQm9paVpzM25kT3ZjRnBxK1llWjdLd3dST1IxRzh6?=
 =?utf-8?B?TEtQS2pwYnNyUHNMWityUFV5R3psdkZBOXg4ek1wT1ZxZU52OEwwQzdCMEJE?=
 =?utf-8?B?MWdvSXQ4d2tjNGhWSi9TcnNkZzlWZWcwSnRiaC9KcDlDeS9TdEptc1NYajY5?=
 =?utf-8?B?OXJ2cHJ4UE5telpRSWVpNlNxVThOblhDSVBrZ0ZFbmM2WVhTNTZ3ZnpKRmx3?=
 =?utf-8?B?MXA1aW4zczdEUzVUSC83Q0srQmN6SHNld2hXVHVDRDZZbGNjMzQzZzlDeFZG?=
 =?utf-8?B?RTBHN0RVTTdrazdzY0JRd29XZS9aNm5DUGtucUpBaDhKM0kyVDZGdGpLU0Mv?=
 =?utf-8?B?ZFdWL1E3dmp3UUxhMFRmVVQxRVFJR2lsbFUrdnN2ZkdtOG9EQ0hNTGdWMUxZ?=
 =?utf-8?B?YW5WdS9wTy9XaFZIWis0YUh6S2hsMGlhNm00c2ZEamxDTDdJWEY3S2ZhMFhH?=
 =?utf-8?B?SlJnaWdTU3pQMVVXR3Z5eFVxRjRSNHo1RDZQYlczNnBzWk1hWHdENVBlYTlO?=
 =?utf-8?B?azZ6eGpkUmptWEgyL1VvN1d0U21xT2FwNGdKOGNiUVNjcEhtbEc1Nm5Cc1R6?=
 =?utf-8?B?eHRBYzgwY2kvRzIxUjlqbHdINEpNNjlTRHRyWUJsSGltZVM5RXNhZGFCaWp0?=
 =?utf-8?B?K0t2UllnMUZRdHBrdXltajh0a3BmSTc3dGtKYW5sV1gwVnpOT09NVFdDQzZH?=
 =?utf-8?B?R3RTS282Mkl3ZWJPU09YQXIveFltT0tpdEtHYnVIclhkVFZXRCtWZ2hsYVFM?=
 =?utf-8?B?NUdVVlRNdHpEN1l2RjFxWWR4amVlMHpkdWQwSW9LRjYrdnpTZVExeW4rMHND?=
 =?utf-8?B?SHd0TmsyWDVnPT0=?=
Content-Type: text/plain; charset="utf-8"
Content-ID: <47528735131D994FA536C4D29910A5EE@namprd13.prod.outlook.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-OriginatorOrg: hammerspace.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: CH0PR13MB5084.namprd13.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 0fd5480c-7701-4ada-d8d3-08d9fd2e35a0
X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Mar 2022 15:55:15.7974
 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 0d4fed5c-3a70-46fe-9430-ece41741f59e
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: j3FeyZpZugBLux/XN9FyyZvijd+YWrVs6Jm+6Q569EoVydFVtQE3IRiMxgfA0Oz+Rn7rciSFbXH46cIyXlm4AQ==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR13MB3216
X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,
        RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE
        autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-nfs.vger.kernel.org>
X-Mailing-List: linux-nfs@vger.kernel.org
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