Date: Wed, 29 Mar 2017 15:21:22 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Maurizio Vairani <maurizio.vairani@cloverinformatica.it>, freebsd-fs@FreeBSD.org Subject: Re: ZFS. No error message when copying a 100 GiB file on a 22 GiB pool Message-ID: <334a8e6b-440a-7b9f-7aad-b17a119c50e7@FreeBSD.org> In-Reply-To: <6d1f7b87-9cc8-35ca-eb5e-3d448b307461@cloverinformatica.it> References: <6d1f7b87-9cc8-35ca-eb5e-3d448b307461@cloverinformatica.it>
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On 29/03/2017 12:06, Maurizio Vairani wrote: > The PC is running: > > # uname -a > > FreeBSD clover-nas2 11.0-RELEASE-p8 FreeBSD 11.0-RELEASE-p8 #0: Wed Feb 22 > 06:12:04 UTC 2017 > root@amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64 > > > I need to copy a 100 GiB file, Win7.img, to another machine. The idea is to use > a fast USB 3 SSD. The pool on it, zdata, was created with the command: > > # zpool create -m /zdata -O compression=lz4 -O atime=off zdata > diskid/DISK-00000000000000000000 > > > # zpool list zdata > > NAMESIZE ALLOC FREE EXPANDSZ FRAGCAP DEDUP HEALTH ALTROOT > > zdata 22.2G 4.85M 22.2G -16% 0% 1.00x ONLINE - > > > # du -hA Win7.img > > 100GWin7.img > > # du -h Win7.img > > 55GWin7.img > > > # /bin/cp Win7.img /zdata/ > > No error message is printed. The file on zdata is truncated: > > > # du -Ah /zdata/Win7.img > > 46G/zdata/Win7.img > > # du -h /zdata/Win7.img > > 22G/zdata/Win7.img Does stat(1) also report a different size? Does md5 also report different content? -- Andriy Gapon
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