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Thread-Topic: How to fill in the fsid for file systems? 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charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: uoguelph.ca X-MS-Exchange-CrossTenant-Network-Message-Id: 39a3f120-c824-485e-a479-08d6426ccc2c X-MS-Exchange-CrossTenant-originalarrivaltime: 04 Nov 2018 15:47:16.8414 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: be62a12b-2cad-49a1-a5fa-85f4f3156a7d X-MS-Exchange-Transport-CrossTenantHeadersStamped: YTOPR0101MB1098 X-Rspamd-Queue-Id: 0BF72769D0 X-Spamd-Result: default: False [-0.77 / 200.00]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; R_SPF_ALLOW(-0.20)[+ip4:40.107.0.0/17]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[uoguelph.ca]; RCVD_COUNT_THREE(0.00)[3]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; MX_GOOD(-0.01)[cached: mx2.hc184-76.ca.iphmx.com]; NEURAL_HAM_SHORT(-0.89)[-0.892,0]; RCVD_IN_DNSWL_NONE(0.00)[51.66.107.40.list.dnswl.org : 127.0.3.0]; IP_SCORE(-0.57)[asn: 8075(-2.79), country: US(-0.07)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; SUBJECT_ENDS_QUESTION(1.00)[]; ASN(0.00)[asn:8075, ipnet:40.64.0.0/10, country:US]; RCVD_TLS_LAST(0.00)[] X-Rspamd-Server: mx1.freebsd.org X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Nov 2018 15:47:19 -0000 Julian Elischer wrote: [stuff snipped] >Rick Macklem wrote: >> >> Maybe someone can explain when it would be useful for FFS (or not)? >SO lets' just make the usage model clear: >I believe that what Josh needs is to have a two High availability >servers viewing a single >(cloud based) filesystem, export the same FSID so that when one takes >over for the other >the clients don't notice. Well, for UFS/FFS, if it is the same physical storage or the file system wa= s cloned via a block for block copy (like using dd(1)), then it shouldn't be a probl= em, since the fsid comes out of the superblock. *** added comment Oh, and I am not sure what happens w.r.t. the fsid for UFS snapshots? rick