From: Duncan <1i5t5.duncan@cox.net>
To: linux-btrfs@vger.kernel.org
Subject: Re: RAID system with adaption to changed number of disks
Date: Fri, 14 Oct 2016 21:19:40 +0000 (UTC) [thread overview]
Message-ID: <pan$dceb8$140ac377$172f0cb7$9cba8307@cox.net> (raw)
In-Reply-To: 20161014195544.GZ21290@hungrycats.org
Zygo Blaxell posted on Fri, 14 Oct 2016 15:55:45 -0400 as excerpted:
> The current btrfs raid5 implementation is a thin layer of bugs on top of
> code that is still missing critical pieces. There is no mechanism to
> prevent RMW-related failures combined with zero tolerance for
> RMW-related failures in metadata, so I expect a btrfs filesystem using
> raid5 metadata to be extremely fragile. Failure is not likely--it's
> *inevitable*.
Wow, that's a signature-quality quote reflecting just how dire the
situation with btrfs parity-raid is ATM. First sentence for a short sig,
full paragraph for a longer one.
--
Duncan - List replies preferred. No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master." Richard Stallman
next prev parent reply other threads:[~2016-10-14 21:20 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-11 15:14 RAID system with adaption to changed number of disks Philip Louis Moetteli
2016-10-11 16:06 ` Hugo Mills
2016-10-11 23:58 ` Chris Murphy
2016-10-12 1:32 ` Qu Wenruo
2016-10-12 4:37 ` Zygo Blaxell
2016-10-12 5:48 ` Qu Wenruo
2016-10-12 17:19 ` Zygo Blaxell
2016-10-12 19:55 ` Adam Borowski
2016-10-12 21:10 ` Zygo Blaxell
2016-10-13 3:40 ` Adam Borowski
2016-10-12 20:41 ` Chris Murphy
2016-10-13 0:35 ` Qu Wenruo
2016-10-13 21:03 ` Zygo Blaxell
2016-10-14 1:24 ` Qu Wenruo
2016-10-14 7:16 ` Chris Murphy
2016-10-14 19:55 ` Zygo Blaxell
2016-10-14 21:19 ` Duncan [this message]
2016-10-14 21:38 ` Chris Murphy
2016-10-14 22:30 ` Chris Murphy
2016-10-15 3:19 ` Zygo Blaxell
2016-10-12 7:02 ` Anand Jain
2016-10-12 7:25 ` Roman Mamedov
2016-10-12 17:31 ` Zygo Blaxell
2016-10-12 19:19 ` Zygo Blaxell
2016-10-12 19:33 ` Roman Mamedov
2016-10-12 20:33 ` Zygo Blaxell
2016-10-11 16:37 ` Austin S. Hemmelgarn
2016-10-11 17:16 ` Tomasz Kusmierz
2016-10-11 17:29 ` ronnie sahlberg
2016-10-12 1:33 ` Dan Mons
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