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([2a00:1370:8180:8557:e7f3:8ef9:3229:a262]) by smtp.gmail.com with ESMTPSA id g7-20020a2ea4a7000000b002d557895e4dsm81319ljm.131.2024.03.27.21.03.15 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 27 Mar 2024 21:03:15 -0700 (PDT) Message-ID: Date: Thu, 28 Mar 2024 07:03:14 +0300 Precedence: bulk X-Mailing-List: linux-btrfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: raid1 root device with efi To: Matt Zagrabelny , Forza Cc: Btrfs BTRFS , Matthew Warren References: <1eac6d15-4ead-46bc-9b60-02f1d120c885@tnonline.net> Content-Language: en-US, ru-RU From: Andrei Borzenkov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 27.03.2024 23:21, Matt Zagrabelny wrote: > > Are folks using the "degraded" option in /etc/fstab or the grub mount > options for the btrfs mount? > > I've read online [0] that the degraded option can cause issues due to > timeouts being exceeded. > That is incorrect. The "degraded" option does not "cause" issue due to timeouts which happen long before this option is even seen. It does not fix them, that's true. > Also, I'm seeing some confusing results of looking at the UUID of my disks: > > root@achilles:~# blkid | grep /dev/sd > /dev/sdb2: UUID="9a46a8ad-de37-48c0-ad96-2c54df42dd5a" > UUID_SUB="7737fc5f-036d-4126-9d7c-f1726d550444" BLOCK_SIZE="4096" > TYPE="btrfs" PARTUUID="3a22621c-a4e1-8641-aa0f-990a824fabf4" > /dev/sdb1: UUID="BD42-AEB1" BLOCK_SIZE="512" TYPE="vfat" > PARTUUID="43e432b1-6c68-4b5c-9c30-793fcc10a700" > /dev/sda2: UUID="9a46a8ad-de37-48c0-ad96-2c54df42dd5a" > UUID_SUB="9436f570-6d15-4c74-aff8-5bd85995d92d" BLOCK_SIZE="4096" > TYPE="btrfs" PARTUUID="e3b4b268-99e8-4043-a879-acfc8318232b" > /dev/sda1: UUID="BD42-AEB1" BLOCK_SIZE="512" TYPE="vfat" > PARTUUID="02568ee9-db21-4d03-a898-3d1a106ecbec" > > ...why does /dev/sdb2 show up in the following /dev/disk/by-uuid, but > not /dev/sda2: > > root@achilles:~# ls -alh /dev/disk/by-uuid/ > total 0 > drwxr-xr-x 2 root root 80 Mar 25 21:16 . > drwxr-xr-x 7 root root 140 Mar 25 21:16 .. > lrwxrwxrwx 1 root root 10 Mar 25 21:16 > 9a46a8ad-de37-48c0-ad96-2c54df42dd5a -> ../../sdb2 > lrwxrwxrwx 1 root root 10 Mar 25 21:16 BD42-AEB1 -> ../../sda1 > How do you expect the one symlink to point to multiple destinations?