Date: Thu, 13 Sep 2012 17:01:07 +0700 From: Eugene Grosbein <egrosbein@rdtc.ru> To: Alexander Motin <mav@FreeBSD.org> Cc: stable@FreeBSD.org, re@FreeBSD.org Subject: Re: GEOM_RAID in GENERIC is harmful Message-ID: <5051AEE3.7010907@rdtc.ru> In-Reply-To: <5051ACBD.1090207@FreeBSD.org> References: <50516F96.1020905@rdtc.ru> <5051ACBD.1090207@FreeBSD.org>
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13.09.2012 16:51, Alexander Motin wrote: >> That's makes users very angry when production server fails to boot >> with GENERIC kernel after correctly performed upgrade. >> >> GEOM_RAID compiled in GENERIC should be deactivated and require activation >> with some loader knob. Also, we need distinct RELEASE NOTES warning about the issue. > > Problem of on-disk metadata garbage is not limited to GEOM_RAID. For > example, I had case where remainders of old UFS file system were found > by GEOM_LABEL and ZFS incorrectly attached to it instead of proper GPT > partition, making other partitions inaccessible. Does it mean we should > remove GEOM_LABEL also? I don't think so. All what GEOM_RAID is guilty > in is that it was not in place for 9.0 release. If we remove it now, it > will just postpone the problem for later time or will never be able to > add it again because of the same reasons. We must be ready for lots of angry users of 9.1-RELEASE then and have BIG RED WARNING in RELEASE NOTES. Eugene Grosbein
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