Date: Fri, 22 Jun 2012 08:17:14 +0200 (CEST) From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl> To: kpneal@pobox.com Cc: Julien Cigar <jcigar@ulb.ac.be>, freebsd-questions@freebsd.org Subject: Re: Is ZFS production ready? Message-ID: <alpine.BSF.2.00.1206220815330.26433@wojtek.tensor.gdynia.pl> In-Reply-To: <20120622022000.GE25628@neutralgood.org> References: <4FE2CE38.9000100@gmail.com> <CAPj0R5Kmi-%2BdJ7mPvTrTAoS8O983svOyR2WyK2_v1Cr07dSS_A@mail.gmail.com> <alpine.BSF.2.00.1206211413140.2263@wojtek.tensor.gdynia.pl> <CA%2BD9QhuQ%2BbxKW9%2BdX%2BzS9mErwz8JSkV2G7qL0KfB8BH_LGJAgA@mail.gmail.com> <alpine.BSF.2.00.1206211539230.2903@wojtek.tensor.gdynia.pl> <CA%2BD9QhvR_eKtVxdKcaMyOS7tLw_AOHKgUy3o7mJn2b=chMA0Xw@mail.gmail.com> <4FE32FF5.60603@ulb.ac.be> <alpine.BSF.2.00.1206211635400.3170@wojtek.tensor.gdynia.pl> <20120622022000.GE25628@neutralgood.org>
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> > This is a valid argument. Checksumming is used to detect cases where the > disk or the disk controller return invalid data to the CPU. This can happen > for any number of reasons and isn't that unlikely. "Unrecoverable read > error" probabilities are high enough with common drives that you can > reasonably see them after reading 10-20TB over the course of some small > number of years. And that's assuming no firmware bugs, no flakey cables, > and no other of a variety of potential issues. > this needs scrubbing. Can be done both with ZFS and anything else. just use dd periodically. > I use ZFS. I like ZFS. But I also acknowledge that a zfs_fsck would be > useful in cases where a filesystem is botched enough that it can't be but seems you don't have any serious use for ZFS if you can take that risk just because you "like" ZFS. I cannot.
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