From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.thelounge.net (mail.thelounge.net [91.118.73.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6E6B31DED6D for ; Wed, 4 Jun 2025 08:59:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.118.73.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749027569; cv=none; b=rASa3vXKjuMHcS7f0ZyVAkoAn1V9ALV/HR8l9L3az0VdNHfDNbwd9D4Mrmw9OjsjaMG4eJt7UBpHmg/gTwVL2RdRBpMhy3Av76oRn3jXGxDJiyGN3v9xQCxBeiHEvv3ehOkCK6EFvWl9Y9K/2h7QhJUTnImK9Ar3nZ4+W1dWZeA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749027569; c=relaxed/simple; bh=Hnku/IC9BD1CFucKVdYfpjesdlSxxBONVStjPeqtC8M=; h=Message-ID:Date:MIME-Version:Subject:To:References:From: In-Reply-To:Content-Type; b=q2dRP3fMzrK4xoj2V8L7zMeySAPgt9V/M9iPnODZBjf5uE9AEvKemHkBesLrUMdyiMbw3nFQ8WNbBTTsPcRfGxwCQsSwlU53S+k6rSV5qgDKdz7M7a2WikdJGNDVQDenawVtN7eiH6C4Vu7bfDKAZmWUeGizq+YvMf2VWPihADU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=thelounge.net; spf=pass smtp.mailfrom=thelounge.net; arc=none smtp.client-ip=91.118.73.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=thelounge.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=thelounge.net Received: from [10.10.10.2] (rh.vpn.thelounge.net [10.10.10.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) (Authenticated sender: h.reindl@thelounge.net) by mail.thelounge.net (THELOUNGE MTA) with ESMTPSA id 4bC1jQ0xzSzXLd for ; Wed, 04 Jun 2025 10:59:22 +0200 (CEST) Message-ID: <2e10926a-54bc-4c1f-b579-c251b9a943ea@thelounge.net> Date: Wed, 4 Jun 2025 10:59:21 +0200 Precedence: bulk X-Mailing-List: linux-raid@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Need help increasing raid scan efficiency. Content-Language: en-US To: Linux RAID References: <20250602210514.7acd5325@Zen-II-x12.niklas.com> <24815d81-2e4f-4ddf-b194-b03ea3232b91@youngman.org.uk> <20250603160415.61c9ca7c@Zen-II-x12.niklas.com> From: Reindl Harald Autocrypt: addr=h.reindl@thelounge.net; keydata= xsDNBFq9ahEBDADEQKxJxY4WUy7Ukg6JbzwAUI+VQYpnRuFKLIvcU+2x8zzf8cLaPUiNhJKN 3fD8fhCc2+nEcSVwLDMoVZfsg3BKM/uE/d2XNb3K4s13g3ggSYW9PCeOrbcRwuIvK5gsUqbj vXSAOcrR7gz/zD6wTYSNnaj+VO4gsoeCzBkjy9RQlHBfW+bkW3coDCK7DocqmSRTNRYrkZNR P1HJBUvK3YOSawbeEa8+l7EbHiW+sdlc79qi8dkHavn/OqiNJQErQQaS9FGR7pA5SvMvG5Wq 22I8Ny00RPhUOMbcNTOIGUY/ZP8KPm5mPfa9TxrJXavpGL2S1DE/q5t4iJb4GfsEMVCNCw9E 6TaW7x6t1885YF/IZITaOzrROfxapsi/as+aXrJDuUq09yBCimg19mXurnjiYlJmI6B0x7S9 wjCGP+aZqhqW9ghirM82U/CVeBQx7afi29y6bogjl6eBP7Z3ZNmwRBC3H23FcoloJMXokUm3 p2DiTcs2XViKlks6Co/TqFEAEQEAAc0mUmVpbmRsIEhhcmFsZCA8aC5yZWluZGxAdGhlbG91 bmdlLm5ldD7CwREEEwEIADsCGyMFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AWIQSdK0bNvBQK NnU65NczF01aWJK3uAUCWr1qowIZAQAKCRAzF01aWJK3uEznDACGncwi0KfKOltOBmzIQNIn 7kPOBFU8KGIjONpg/5r82zwDEpFOTKw+hCttokV6+9K+j8Iut0u9o7iSQNA70cXqkaqPndxB uRIi/L6nm2ZlUMvQj9QD5U+mdTtSQH5WrC5lo2RYT2sTWoAFQ6CSnxxJd9Ud7rjbDy7GRnwv IRMfFJZtTf6HAKj8dZecwnBaHqgZQgRAhdsUtH8ejDsWlfxW1Qp3+Vq008OE3XXOFQX5qXWK MESOnTtGMq1mU/Pesmyp0+z58l6HyUmcoWruyAmjX7yGQPOT5APg2LFpMHA6LIu40mbb/pfg 5am8LWLBXQRCP1D/XLOuQ5DO6mWY0rtQ8ztZ5Wihi5qA9QKcJxmZcdmurlaxi3mavR3VgCIc 3hDPcvUqBwB5boNZspowYoHQ21g9qyFHOyeS69SNYhsHPCTr6+mSyn+p4ou4JTKiDRR16q5X hHfXO9Ao9zvVVhuw+P4YySmTRRlgJtcneniH8CBbr9PsjzhVcX2RkOCC+ObOwM0EWr1qEQEM ANIkbSUr1zk5kE8aXQgt4NFRfkngeDLrvxEgaiTZp93oSkd7mYDVBE3bA4g4tng2WPQL+vnb 371eaROa+C7/6CNYJorBx79l+J5qZGXiW56btJEIER0R5yuxIZ9CH+qyO1X47z8chbHHuWrZ bTyq4eDrF7dTnEKIHFH9wF15yfKuiSuUg4I2Gdk9eg4vv9Eyy/RypBPDrjoQmfsKJjKN81Hy AP6hP9hXL4Wd68VBFBpFCb+5diP+CKo+3xSZr4YUNr3AKFt/19j2jJ8LWqt0Gyf87rUIzAN8 TgLKITW8kH8J1hiy/ofOyMH1AgBJNky1YHPZU3z1FWgqeTCwlCiPd6cQfuTXrIFP1dHciLpj 8haE7f2d4mIHPEFcUXTL0R6J1G++7/EDxDArUJ9oUYygVLQ0/LnCPWMwh7xst8ER994l9li3 PA9k9zZ3OYmcmB7iqIB+R7Z8gLbqjS+JMeyqKuWzU5tvV9H3LbOw86r2IRJp3J7XxaXigJJY 7HoOBA8NwQARAQABwsD2BBgBCAAgFiEEnStGzbwUCjZ1OuTXMxdNWliSt7gFAlq9ahECGwwA CgkQMxdNWliSt7hVMwwAmzm7mHYGuChRV3hbI3fjzH+S6+QtiAH0uPrApvTozu8u72pcuvJW J4qyK5V/0gsFS8pwdC9dfF8FGMDbHprs6wK0rMqaDawAL8xWKvmyi6ZLsjVScA6aM307CEVr v5FJiibO+te+FkzaO9+axEjloSQ9DbJHbE3Sh7tLhpBmDQVBCzfSV7zQtsy9L3mDKJf7rW+z hqO9JA885DHHsVPPhA9mNgfRvzQJn/3fFFzqmRVf7mgBV8Wn8aepEUGAd2HzVAb3f1+TS04P +RI8qKoqeVdZlbwJD59XUDJrnetQrBEfhEd8naW8mHyEWHVJZnSTUIfPz2sneW1Zu2XkfqwV eW+IyDAcYyTXqnEGdFSEgwgzliPJDWm5CHbsU++7Kzar5d5flRgGbtcxqkpl8j0N0BUlN4fA cTqn2HJNlhMSV0ZocQ0888Zaq2S5totXr7yuiDzwrp70m9bJY+VPDjaUtWruf2Yiez3EAhtU K4rYsjPimkSIVdrNM//wVKdCTbO+ Organization: the lounge interactive design In-Reply-To: <20250603160415.61c9ca7c@Zen-II-x12.niklas.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Am 03.06.25 um 22:04 schrieb David Niklas: > On Tue, 3 Jun 2025 17:46:01 +0100 > Wol wrote: >> On 03/06/2025 02:05, David Niklas wrote: >>> So I setup the array into read-only mode and started the array with >>> only two of the drives. Drives 0 and 1. Then I proceeded to try and >>> start a second pair, drives 2 and 3, so that I could scan them >>> simultaneously. With the intent of then switching it over to 0 and 2 >>> and 1 and 3, then 0 and 3 and 1 and 2. >> >> BACKUP! BACKUP!! BACKUP!!! > > It's when I was trying to make my yearly backup jesus - that's by far not enough > When I backup, I erase the previous year so the first you do is delete the last known good state > as I don't have enough room otherwise seriously? an external 10 TB disk costs around 200 EUR an external 20 TB disk costs around 400 EUR with rsnapshot you can make daily, weekly and montly backups until the doctor comes because anything unchanged are only hard links > then backup the new year. As a system, it worked up until now. no, it did not as you found out the first time you needed it > It assembles fine with all the disks, the problem is the data corruption > that has occurred across the members and what makes you think you can fix that manually