Date: Tue, 25 Aug 2015 11:13:17 +0100 From: Matthew Seaman <matthew@FreeBSD.org> To: freebsd-questions@freebsd.org Subject: Re: How to minimize the number of writes to CF card? Message-ID: <55DC3FBD.8080102@FreeBSD.org> In-Reply-To: <1440496718919-6034932.post@n5.nabble.com> References: <1440496718919-6034932.post@n5.nabble.com>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --85pBDQNX6vLta32EJtK3Fa2AfwnN7U2aJ Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 2015/08/25 10:58, zhup wrote: > I am going to install Freebsd on CF card and my question is: > how to minimize the number of writes to CF card? Mount it read-only? Less facetiously, make sure you mount any partitions or ZFSes on it with atime=3Dno -- otherwise it will attempt to update some file metadata ever= y time you /read/ a file. Other than that, writing to the filesystem on your compact flash card should only happen when you intentionally write to a file. This includes using various applications that do things creating a temporary save of a work in progress every few minutes so that you don't lose all your work in the event of a crash. Mind you, a good flash drive nowadays should have a lifetime at least comparable to and in some cases better than a spinning hard drive. Cheers, Matthew --85pBDQNX6vLta32EJtK3Fa2AfwnN7U2aJ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQJ8BAEBCgBmBQJV3D/EXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXQxOUYxNTRFQ0JGMTEyRTUwNTQ0RTNGMzAw MDUxM0YxMEUwQTlFNEU3AAoJEABRPxDgqeTnmbIP/jGauC+dQ3sUo9mVmEa4l8Kf 0tdnnOT+zk5Sv1VHNuDK+LdNYixaYpYvfRRl+sTlDq1gAh/TuhQ+2YD9YS0sC9cR MuK0SYFPJC/Aj3BHDAHgG/1pyy+Ua9qlpGTQFVRf/D/nY+dmQIitDizVkQzFYovl qTQRQ2YBn1QuzCsRWuO/lvuEF7tVcbrIF9F17RwXYij9Jt2NuPJ3Rns6HpNRi99p dyYVuXlIlYjt0iUyeZBkPdKXi1Wt0ugzrU129n6AMdqFKY0OFBtWgKSIyj8iKk3d gyHgGYxV0FYruAXJq7Udm3PgOMHunc/rn2Ged39zX8MOS1hIYLns/5wFoC9DJrs3 +sGNcczwjVBbfU3hj7WjbQr611IgnoVPIEuKGTTiyS95Gx7LRv86f3flltTC9nSo ULeuCXe5SKkjzK+ljZS/MsE3GympgtGoTx4Cd+azaZFLUYwYHjGJzZh9BQIANsNV QdnLBQCRh4PJ6I3ebLT6Lmq8IXaDHv9Igxt4guAdJLGTDNBJ72uXbmR8fm5gJBg4 ymFoSd9a9fan8ef2+KR7qpNKHuTi3JO//LO7ZQEm2pEAzc6czG8cd2R0kMfHw06S tIBzEbmFwuIJbBzeyMm6TKfXrnLssNmjNaL7jmkl2xf7nnYtj6WRZeg6fyvNYLJq mfECCfFYMk+JiFbKdBQB =u45a -----END PGP SIGNATURE----- --85pBDQNX6vLta32EJtK3Fa2AfwnN7U2aJ--
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