Date: Sun, 23 Jan 2005 19:24:26 +0300 (MSK) From: Dmitry Morozovsky <marck@rinet.ru> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: freebsd-hackers@FreeBSD.org Subject: Re: 5.3-STABLE: handle_workitem_freefile panic Message-ID: <20050123192210.O34546@woozle.rinet.ru> In-Reply-To: <20050123153011.GZ795@darkness.comp.waw.pl> References: <20050123170743.B34546@woozle.rinet.ru> <20050123172929.J34546@woozle.rinet.ru> <20050123153011.GZ795@darkness.comp.waw.pl>
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On Sun, 23 Jan 2005, Pawel Jakub Dawidek wrote: PJD> You cannot dump to GEOM providers, especially from rank > 1 geoms. PJD> It is better to create more mirrors for every partition you want to mirror PJD> (or slice) instead of whole disk. PJD> One of the benefits is that gmirror marks mirror as clean if there were no PJD> WRITE requests in few seconds, so even after power failure resynchonization PJD> is not needed. When you've many smaller mirrors, after unclean shutdown you PJD> probably don't need rebuild all mirrors. PJD> The argument against could be that when you synchronize many mirrors on PJD> the same disks in parallel, your disks are less happy (in one big mirror PJD> scenario, disk's heads don't have to jump from one place to another so PJD> often). Well, hope I see both sides of the picture. However: how can the be achieved the following goal: have mirrored swap (to keep redundancy and HA) and a place to dump panic images to, modulo having scratch disk and/or scratch unused partition? Sincerely, D.Marck [DM5020, MCK-RIPE, DM3-RIPN] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------
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