Date: Fri, 7 Jun 2024 11:48:47 +0200 From: Stefan Esser <se@FreeBSD.org> To: Yuri Victorovich <yuri@FreeBSD.org> Cc: freebsd-hackers@freebsd.org Subject: Re: What are equivalents of Linux ioctl functions FICLONE and FICLONERANGE ? Message-ID: <1406f7e7-63a9-4f9a-a2e6-2de71bac65cb@FreeBSD.org> In-Reply-To: <2bcfb025-b639-4696-82e6-bfeb1a291294@FreeBSD.org> References: <2bcfb025-b639-4696-82e6-bfeb1a291294@FreeBSD.org>
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Am 07.06.24 um 08:59 schrieb Yuri: > On Linux files can be copied with: > ioctl(destFd, FICLONE, srcFd) > > > What would be the equivalent of this on FreeBSD? That would be copy_file_range(), but as on Linux, it does only offer any benefit on filesystems that support copy-on-write or potentially on network attached storage. NFSv4 has recently gained support for server-side copies if copy_file_range is used, for example. But UFS will fall back to a normal copy operation. ZFS should do this via block cloning, but that has not been enabled by default, since it has a history of corrupted files (and it is not clear, whether all border cases are covered in the latest version). Regards, STefan
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