On Sun, 2011-11-20 at 14:14 +0800, Lan, Tianyu wrote: > OK. Thx. > But fsync is too slow. I try to find a way to sync a range of file. > Are there any solutions to meet my purpose?
fdatasync() is as good as it'll get. tbh, maybe we should just consider opening QCOW images with O_SYNC and just get it over with? > Thanks > Tianyu Lan > > -----Original Message----- > From: Sasha Levin [mailto:levinsasha...@gmail.com] > Sent: Sunday, November 20, 2011 12:27 AM > To: Lan, Tianyu > Cc: Kevin Wolf; penb...@kernel.org; kvm@vger.kernel.org; > asias.he...@gmail.com; prasadjoshi...@gmail.com > Subject: RE: [RFC v2 PATCH] kvm tools, qcow: Add the support for > copy-on-write clusters > > On Sat, 2011-11-19 at 23:30 +0800, Lan, Tianyu wrote: > > How about using the sync_file_range to sync the metadata? > > sync_file_range() is only a hint, it doesn't actually assure anything. > -- Sasha. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
