Date: Thu, 1 Apr 2021 11:20:44 +0300 From: Lev Serebryakov <lev@FreeBSD.org> To: Doug Ambrisko <ambrisko@ambrisko.com>, Ed Maste <emaste@freebsd.org> Cc: Chris <bsd-lists@bsdforge.com>, freebsd-stable stable <freebsd-stable@freebsd.org> Subject: Re: Vinum deprecation for FreeBSD 14 - are there any remaining Vinum users? Message-ID: <c71d55fa-1f5e-11c1-8248-0ff6de2a94a3@FreeBSD.org> In-Reply-To: <20210331233934.GA66902@ambrisko.com> References: <CAPyFy2Dcjt%2BY5c3wwo94xis58%2BhdURrL54FKZ8-Dek2F8cN3WQ@mail.gmail.com> <a34b36b9500c6ce3c9c448a24e9e1361@bsdforge.com> <CAPyFy2A_LDXvNJRfgbsPsuXwewrJcXcRkNg6rJTcyb2PzRaLtA@mail.gmail.com> <20210331233934.GA66902@ambrisko.com>
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On 01.04.2021 2:39, Doug Ambrisko wrote: > | > I can only state that I use it only occasionally, and that when I do. I > | > have had no problems with it. I'm glad that it's there when I need it. > | > | Thanks for the reply. Can you comment on your use cases - in > | particular, did you use mirror, stripe, or raid5? If the first two > | then gmirror, gconcat, gstripe, and/or graid are suitable > | replacements. > | > | I'm not looking to deprecate it just because it's old, but because of > | a mismatch between user and developer expectations about its > | stability. > > It would be nice if graid got full support for RAID5 alteast I'm not sure > how much the others are used for that are not fully supported (RAID4, > RAID5, RAID5E, RAID5EE, RAID5R, RAID6, RAIDMDF) according to the man > page. I started to hack in RAID5 full support and try to avoid writes > if members didn't change. This limits our VROC support. My experience, as co-author and maintainer of `sysutil/graid5`, shows, that it is very non-trivial task. It contains many subtle problems. `graid5` still has some undiscovered problems, and I don't think it worth fixing in 2021, when we have ZFS for many years. -- // Lev Serebryakov
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