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[88.149.152.155]) by smtp.gmail.com with ESMTPSA id z20sm3868130ejb.68.2020.06.05.02.23.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 05 Jun 2020 02:23:23 -0700 (PDT) From: Riccardo Veraldi X-Google-Original-From: Riccardo Veraldi Subject: Re: TRIM on mixed SSD/HHD ZFS pool To: peter.blok@bsd4all.org, freebsd-scsi@freebsd.org References: <2F0DC649-4E6D-4520-8258-A6EE652C2949@bsd4all.org> Autocrypt: addr=Riccardo.Veraldi@gmail.com; prefer-encrypt=mutual; keydata= mQINBFzjvLwBEADOmF2K2Olb9T8T9I3k+xT3ripWI8lZ8wUlAATF8mKO5WmLvLT1Z4DQZ+d6 P1IlvID/nwgEQGYICfRlDVoVR01hA1OsUt4Uzu7zRH7Eeasg199jWz9xSUeC+LTw/wqFb3mU +oYqpthJZO5gICNZ1X5ob6JjmpP4I/6WyZbxiRVFhgLMJvobU8fO9rMYIk1dkEfhYitDC74P BFmLFpA0mx9GZ2ZL7rFszjQ7LiD8fvygUEMeJ3yTCmn2ugQUw2x4yAlZ11Fp9kxsG+m1Apju MziTU8y9DY5OGDRP4cAnNwBVostT604+Uoh9Yss8y+l+oAT08/7XtuWeXoT5vcIvsWsgi92H FZoAppoS+C7ya4ANVPmzWoYXzHhlU/ibuDe2TCRkl3dR1vKk1Z+rQMagU8azJxH9gxs1fQ2E OEwBsE+11ihAGn8HY5O507BBkeOMMT7dkkY+HHRYM6kES9vUT6jKlq+Y8/zxfshOZKswgAhT dDGp8n0WaTGcLt6EW39yHBdmrqnT3fqQZCguLWS2nnY7vUjWqDrpfZaSl87/GYhkZPfkMFUL +ts5tpSX7ELSfP1aLcdw4tdqc+HaiJLo9Af9pt54aKU3gLrzB8nhb3eCK8Pd8DUXxaI27e30 RlKGMRKRYavpED8iHiu417r0THUeKdS/xDNo59WfselAwdRpQQARAQABtDBSaWNjYXJkbyBW ZXJhbGRpIDxSaWNjYXJkby5WZXJhbGRpQGNuYWYuaW5mbi5pdD6JAk4EEwEIADgCGyMFCwkI BwIGFQoJCAsCBBYCAwECHgECF4AWIQS86utP4lpXDcJ3VAQK64vO9D64lAUCXOO9AwAKCRAK 64vO9D64lFhdEACYvzshTipzdi9GR5sH0QuUCMdZxOkIp8UTAAX2f8oho1ThYfl1myF6VWDZ KzbDnYmb8S+MOIi66fE7AeNvnYBQ4uOpMrHdUWJ1weUvDrsXcsSDrtXShhOWdonWGw3jq2qm UXrJXGEZhn7Wf9EaFJQVXETM3nc8VF5MPhMrJwMW3hzxmt4yj/fok5YKip2L2udfNXB341Ed Ax7szNU90642CxTqFRi00/nhJxSngnz1rvsXWDsSgU+5GO61TYV/hkOgC2T9xTZetQ4u9SVY fKDdfup6yp+kN8xoBnZm6RlPiyVi4EHoZx7xqV+xFeXKJna56DHqTYScfDOeSftHXCKBRyoR Nh5md4aAaaT1LU68MTnjypMSS6mPQ3vxnxLuTQHt0l2fgyyAfy15LjMz3hJdsJxs7Zi0A/cn SRFjDdg8VLVl3SFSX+76ProiV/fRNQ6HveISRWcgt7j20eDca8qKtCgdHv6VmSiNfSr/zNiH yeHbIz2MsKe8E7EPIP7dI1sJHrkT7EuG9bIlWHDQ/IEXHb+JNPvr02Iam64NRQPd+fslULh8 Aimj46BOvfWayYRtyCh9b45RPItRwFfqzeT6WVtpPWAr0ahAj2+NKzk3xDvhj7rpZvuN2XrU Acfr3UZCc0OgLqpiyELCufYwq9+ri1iQYawcADr7RQEdDtzRE7kCDQRc47y8ARAAwGpru+f1 fw4GG4u/kTVKdlYc61i0DFGRaYqwDxMqQsawcEPxH8yO+rc1L72/ToSw7VpIlA1Mh/HX31DF ZhJ7N/Ab2S9Wi4je+g9LwIvybhU70t+RQYgGFCPxbA3sfpW0T8IDBJt+A3Aic8aOO7eI5lua UxZ0affgfBgkXpniQTXG/LP2Z0kRrZlrKwLGwcTaFjU+WwaNREIVPA/3MXiGmGNm4P2zzGou 41UV55OamXjRPjn6u42M/FlP/tYW/DvCSm7jVtrdY8dLh2GPKY9RW9Bw54Q9RiSFB+1bXWFp 8jR8vhpev7R9zqvxwyzeqmDP6MSxpMwn69GWKgabqVswHdOsPXIkgxDlosYfIvAisi8O3jPb 3/niXyIcnEd2J8iX1D/c1jB4mrf3FAenz74j1bN1dT2eDturmi6ABGYpuE9tTouKSxVZa29J 9/d5rB/BvvmjCj7A2qrBMSlONKhL3Siq9R5Sv0Ujkh/6Gn1I3c9i68/GD1I/gi8XhrFkg6eY Mg36PK7sFl+X+7eWjYFowjJqD16/uWzSZVanJxpxQTs9bPSkDdQHQXUno3haL/m9A44JCLjc UHzEiJ4GOCqVpRkSM3ZzTgS4tBrWt5afWFOyNHualJFTO14l5YJHTCWpn7J2j2wA3IKmfER3 uhtxbsqoxMYn+1qy/FHbWYPRArkAEQEAAYkCNgQYAQgAIAIbDBYhBLzq60/iWlcNwndUBArr i870PriUBQJc470DAAoJEArri870PriUswgP/j6CYYkGZdVVEkDB47J8iA1GBnypg5bXUoUi H7h3/H1/NVgHhV6z67bD/cgoqwuCikUMQB0sg7EXc3rvARdfQvq9MCaxA/tqpJw7QDaV/bGX HBGq771cv5DNImypnIkwvPhUw583LHJYC5wHWwCFh/Do/+9V5c7cVm2Qh7UlzXQMjuFKYR4e YkGuQYa/JF1e8K7VgaIKrHrflyxVBgnNjUjbfysLVGu9Bojfcw1DLGvYLgHLNgPBAljn89iD X8hD9Q1RdmN/vFjGBudkWSualpKItpsdAYbD2yVeQaUO9DMNE6DLJSxo0EwwrIimiK0HqjQ6 FIa0GWYwXs01d5QEf++nBhmtgxvZ9/i0iURu92L32dyRDeZL6GsVJPsPv310PeHC1NwYzIQR O2wHChG0BqhjtLlIBMECsbzZ9soCJ97+UH+M8V9WRVj4lIzd9lDOtX4q1EfNm/jl9pNveNH3 96Givk0y0aowElUQ6zRNKopWTiAjbZ1KU8F9c5WbvQba2YZcaWJVkugz58ra5xWxBmP066gB ha/E0OTltCRZsFrMyFAM3fjp/J/u2VDC6M+zfVBfqYKQbaq8r+ywQhCzID0pTlHsqQW7TrHP LT1zWgBxJ7GgteauTDLCLkibG3zdvZhkQ8mz4IDZ0LIuW6c9aZ6o171fMirFBVYjEBInCJPG Message-ID: <7a9a0c2b-ef62-a4ad-61f4-f1ba88115f64@gmail.com> Date: Fri, 5 Jun 2020 11:23:21 +0200 User-Agent: mailx MIME-Version: 1.0 In-Reply-To: <2F0DC649-4E6D-4520-8258-A6EE652C2949@bsd4all.org> Content-Type: text/plain; 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ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.04)[-1.037]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; NEURAL_HAM_LONG(-1.04)[-1.039]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-scsi@freebsd.org]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::629:from]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Jun 2020 09:23:27 -0000 you may opt for enterprise level SSD disks. I have been using the 9300 NVMe series  with Lustre/ZFS writing extensive data and I have never needed any trimming on them. They do automatic garbage collection. They are quite expensive piece of hardware though. On 05/06/2020 08:37, peter.blok@bsd4all.org wrote: > Hi, > > I have decided to gradually move over to SSD in my ZFS pool. Anybody knows if ZFS will issue a TRIM designated for the SSD in this mixed case, while the HDD do not support this? > > Peter > > > _______________________________________________ > freebsd-scsi@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-scsi > To unsubscribe, send any mail to "freebsd-scsi-unsubscribe@freebsd.org"