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Sat, 29 Jun 2024 15:56:29 +0200 (CEST) Received: from lithops.sigma-star.at (lithops.sigma-star.at [195.201.40.130]) by lithops.sigma-star.at (Postfix) with ESMTP id D0FFB61966A1; Sat, 29 Jun 2024 15:56:29 +0200 (CEST) Date: Sat, 29 Jun 2024 15:56:29 +0200 (CEST) From: Richard Weinberger To: chengzhihao1 Cc: Ryder Wang , linux-mtd Message-ID: <84530892.9887.1719669389649.JavaMail.zimbra@nod.at> In-Reply-To: References: <497aa593-5999-821d-a2b7-69c0953e1e3e@huawei.com> Subject: Re: ubifs: why ubifs doesn't support 2 copied of super blocks for better fs reliability MIME-Version: 1.0 X-Originating-IP: [195.201.40.130] X-Mailer: Zimbra 8.8.12_GA_3807 (ZimbraWebClient - FF97 (Linux)/8.8.12_GA_3809) Thread-Topic: ubifs: why ubifs doesn't support 2 copied of super blocks for better fs reliability Thread-Index: OlFq1NTmBOsRIXmIIhGPnFOlmd5eOg== X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240629_065642_291851_886CD2CB X-CRM114-Status: GOOD ( 11.46 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org LS0tLS0gVXJzcHLDvG5nbGljaGUgTWFpbCAtLS0tLQo+IFZvbjogImNoZW5nemhpaGFvMSIgPGNo ZW5nemhpaGFvMUBodWF3ZWkuY29tPgo+IEFuOiAiUnlkZXIgV2FuZyIgPHJ5ZGVyY29kaW5nQGhv dG1haWwuY29tPiwgImxpbnV4LW10ZCIgPGxpbnV4LW10ZEBsaXN0cy5pbmZyYWRlYWQub3JnPiwg InJpY2hhcmQiIDxyaWNoYXJkQG5vZC5hdD4KPiBHZXNlbmRldDogU2Ftc3RhZywgMjkuIEp1bmkg MjAyNCAxMzoyMjozNAo+IEJldHJlZmY6IFJlOiB1Ymlmczogd2h5IHViaWZzIGRvZXNuJ3Qgc3Vw cG9ydCAyIGNvcGllZCBvZiBzdXBlciBibG9ja3MgZm9yIGJldHRlciBmcyByZWxpYWJpbGl0eQoK PiDlnKggMjAyNC82LzI4IDEwOjI4LCBSeWRlciBXYW5nIOWGmemBkzoKPj4gSGVsbG8sCj4+IAo+ PiBJdCBsb29rcyB1YmlmcyBoYXMgb25seSAxIHN1cGVyIGJsb2NrLiBTdXBlciBibG9jayBtYXkg YmUgY29ycnVwdGVkIGJ5IHBvd2VyLWN1dAoKTm8uIFRoZSBzdXBlciBibG9jayBtdXN0IG5vdCBn ZXQgY29ycnVwdGVkIGJ5IGEgc3VkZGVuIGxvc3Mgb2YgcG93ZXIuCklmIHlvdSdyZSBmYWNpbmcg dGhpcywgc29tZXRoaW5nIGVsc2UgaW4geW91ciBzdG9yYWdlIHN0YWNrIGlzIGJyb2tlbi4KCj4+ IHdoaWxlIE5BTkQgZXJhc2luZyBvciB3cml0aW5nLCBFQ0MgZXJyb3IgYW5kIGV0Yy4gV2hlbiBz dXBlciBibG9jayBpcwo+PiBjb3JydXB0ZWQsIHViaWZzIG1vdW50IHdpbGwgYWx3YXlzIGZhaWwu Cj4+IAo+IAo+IEhhdmUgeW91IG1ldCB0aGUgcHJvYmxlbSBjYXVzZWQgYnkgY29ycnVwdGVkIHN1 cGVyYmxvY2s/IEkgb25seSBzYXcgb25jZQo+IGluIG91ciBwcm9kdWN0LCBpbiB3aGljaCB0aGVy ZSB3YXJlIG1hbnkgcHJvYmxlbSBlcmFzZWJsb2NrcyBpbiB0aGUgZmxhc2guCj4gCj4+IEkgYW0g YXNraW5nIHdoeSB1YmlmcyBkb2Vzbid0IHN1cHBvcnQgMiBjb3BpZWQgb2Ygc3VwZXIgYmxvY2tz IGZvciBiZXR0ZXIgZnMKPj4gcmVsaWFiaWxpdHk/IEFzIHdlIGtub3csIGJvdGggdWliZnMgbWFz dGVyIGJsb2NrIGFuZCB1Ymkgdm9sdW1lIHRhYmxlIGhhdmUgMgo+PiBjb3BpZXMsIHNvIHRoZXkg YXJlIHZlcnkgc3Ryb25nZXIuIElzIHRoZXJlIGFueSBkZXYgcGxhbiB0byBzdXBwb3J0IGl0IG9u IHN1cGVyCj4+IGJsb2NrPwo+IAo+IEkgaGF2ZSBubyBpZGVhcyBhYm91dCB0aGlzIHF1ZXN0aW9u IGVpdGhlciBhZnRlciBsb29raW5nIHRocm91Z2ggdGhlCj4gaGlzdG9yeSBhbmQgd2hpdGVwYXBl clsxXS4gVGhlIHN1cGVyYmxvY2sgaXMgdXBkYXRlZCBpbiBhIHZlcnkgbG93Cj4gZnJlcXVlbmN5 KGVnLiBhdXRvLXJlc2l6ZSksIGFuZCBpdCBpcyB1cGRhdGVkIGJ5IGF0b21pYyBjaGFuZ2luZy4g U28gSQo+IGd1ZXNzIHRoYXQgY29ycnVwdGVkIHN1cGVyYmxvY2sgaXMgaGFyZGx5IGdlbmVyYXRl ZCBmcm9tIHRoZSB2aWV3IG9mCj4gVUJJRlMgbGF5ZXIuIEhvd2V2ZXIsIHRoZSBVQkkgd2lsbCBk byB3ZWFyLWxldmVpbmcsIHdoaWNoIGNvdWxkCj4gYXRvbWljYWxseSBleGNoYW5nZSB0d28gTEVC cyhtYXkgY29udGFpbiBzdXBlcmJsb2NrKSwgdGhlbiB0aGUgdXBkYXRpbmcKPiBmcmVxdWVuY3kg b2Ygc3VwZXJibG9jayBjb3VsZCBiZSBpbmNyZWFzZWQuIFRoZSBmaW5hbCBwcm9iYWJpbGl0eSBv Zgo+IGNvcnJ1cHRlZCBzdXBlcmJsb2NrIGlzIGhhcmQgdG8gc2F5LiBTbywgSSdtIG5vdCBzdXJl IGl0J3MgYSB2ZXJ5Cj4gdmFsdWFibGUgdGhpbmcgdG8gbWFpbnRhaW4gdHdvIHN1cGVyYmxvY2tz IGluIFVCSUZTLCBhZnRlcmFsbCwgaXQgd2lsbAo+IGNoYW5nZSBkaXNrIHN0cnVjdHVyZS4KClVC SUZTIHJlbGllcyBvbiB3b3JraW5nIGZsYXNoIG1lbW9yeSwgc28gaGF2aW5nIG11bHRpcGxlIGNv cGllcyBtYWtlcyBubyBzZW5zZQpzaW5jZSBvbmUgb2YgVUJJRlMnIGdvYWxzIGlzIGFsc28gYmVp bmcgc3BhY2UgZWZmaWNpZW50LgpUaGVyZSBpcyBvbmUgZXhjZXB0aW9uOiBpdCBoYXMgdHdvIG1h c3RlciBMRUJzLiBGb3IgaGlzdG9yaWMgcmVhc29ucywKaXQgbmVlZHMgdG8gZXhjaGFuZ2UgdGhl aXJzIGNvbnRlbnRzIGF1dG9tYXRpY2FsbHksIGF0IHRoZSB0aW1lIHdoZW4gVUJJRlMKd2FzIHlv dW5nLCBVQkkgaGFkIG5vIGF0b21pYy1sZWItY2hhbmdlIGZlYXR1cmUuCgpUaGFua3MsCi8vcmlj aGFyZAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fCkxpbnV4IE1URCBkaXNjdXNzaW9uIG1haWxpbmcgbGlzdApodHRwOi8vbGlzdHMuaW5mcmFk ZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LW10ZC8K