Date: Tue, 22 Jan 2013 02:52:53 -0500 From: Zaphod Beeblebrox <zbeeble@gmail.com> To: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> Cc: freebsd-fs <freebsd-fs@freebsd.org> Subject: Re: ZFS regimen: scrub, scrub, scrub and scrub again. Message-ID: <CACpH0MfPnpxwb_NMK2XeJZYWbFJg-L3kEt%2Btnhqfs=vSzDijbg@mail.gmail.com> In-Reply-To: <alpine.BSF.2.00.1301211201570.9447@wojtek.tensor.gdynia.pl> References: <CACpH0Mf6sNb8JOsTzC%2BWSfQRB62%2BZn7VtzEnihEKmEV2aO2p%2Bw@mail.gmail.com> <alpine.BSF.2.00.1301211201570.9447@wojtek.tensor.gdynia.pl>
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On Mon, Jan 21, 2013 at 6:12 AM, Wojciech Puchar < wojtek@wojtek.tensor.gdynia.pl> wrote: > Please don't misinterpret this post: ZFS's ability to recover from fairly >> catastrophic failures is pretty stellar, but I'm wondering if there can be >> > > from my testing it is exactly opposite. You have to see a difference > between marketing and reality. > Far from listening to the marketing, I have experienced it. I have been using ZFS for as long as it's been part of FreeBSD. It has never lost me data and it has recovered from some pretty incredible situations that would have lost data with standard RAID deployments. Most of what I'm talking about is bad hardware --- ZFS is marvelous at helping you find bad hardware. > has become a go-to filesystem for most of my applications. >> > > My applications doesn't tolerate low performance, overcomplexity and high > risk of data loss. > > That's why i use properly tuned UFS, gmirror, and prefer not to use > gstripe but have multiple filesystems > Bull-hockey. I still have a 250-ish gig RAID-1 UFS partition with cyrus IMAP data on it that takes nearly an hour to FSCK. UFS snapshots have definitely lost me data and UFS has definite problems with large partitions and/or lots of small files. I've even spent time with Kirk McKusick on this. Softupdates on UFS is an incredible piece of work, but simply put: UFS is not designed for 50 or 100 Terrabyte partitions. ... now... if you don't mind. I've sparred with you verbally 2 or 3 times now on list. Trust me: I have no use for "marketing" ... but equally, I have less use for someone who would accuse me of it... or does anyone "market" FreeBSD effectively anyways. I haven't found your posts (in general) to be useful or on topic at all. If you don't mind, just don't reply to my post next time.
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