Date: Fri, 16 Feb 2024 04:08:09 +0000 From: Ordinary Bit <ordinarybit@proton.me> To: Mark Millard <marklmi@yahoo.com> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: Re: newfs TRIM flag device support Message-ID: <DL-bGuTxmOC5O2N-3wa9mbkuJ6VMeRTrwiHT_eOaHeopBXr_JfbRiHKiiyncADaXrn8H575uLNIkdxjNV0Nogz3IJuVfE_T8jcU30voSkYI=@proton.me> In-Reply-To: <6AD380D4-9B42-4511-9E02-94EB0005D278@yahoo.com> References: <zBjNO8pJgkvHeMFBa74-f89m7IO_mgcHccwonGg0sZNJtDds49EICbFezJwbGJYnQDSVEI_tm3vCG4pjpdwiNyAtfF9lYfAn9znBR2I0AMQ=@proton.me> <6AD380D4-9B42-4511-9E02-94EB0005D278@yahoo.com>
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Hi! On Friday, 16 February 2024 at 11:41, Mark Millard <marklmi@yahoo.com> wrot= e: > [Only replying to lists I subscribe to.] >=20 > On Feb 15, 2024, at 19:19, Ordinary Bit ordinarybit@proton.me wrote: >=20 > > I'm reading the newfs manual https://man.freebsd.org/cgi/man.cgi?newfs(= 8) to be able to know about the TRIM flag. In the manual under -t parameter= , it mentioned about "underlying device support", what exactly is this devi= ce? >=20 >=20 > 2 contrasting examples: >=20 >=20 > Example 0: Optane NVMe media (PCIe card or U.2, for example) >=20 > Optane has no need of TRIM and, so, never supports TRIM. >=20 >=20 > Example 1: microsd card media usage >=20 > A microsd card in the normal type of microsd card slot on > Small Board Computers (normally) supports TRIM. Take the > same card and put it in a USB reader/writer and use it > via USB on the same system: no TRIM is supported by > FreeBSD over USB. > So you mean to say that if I have a Rasperry Pi 3 or 4 now and then have my= FreeBSD installed in a microSD card (for example, SanDisk Extreme card) wi= th UFS/FFS filesytem in it with TRIM enabled parameter then is it going to = recognize it? How to verify? >=20 > FYI: >=20 > When the file system has TRIM enabled, FreeBSD put out a > notice if TRIM will not actually be used in the actual > context in use. > Ok, got it. How to check this as well? BR, orbit
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