Date: Tue, 3 Feb 2004 15:09:05 +0200 From: "Putinas" <pilkis@gmx.net> To: <current@freebsd.org> Subject: Re: atacontrol rebuild and iostat Message-ID: <002c01c3ea56$f7b38410$1e64a8c0@spotripoli.local> References: <200402031255.i13CtL8F022022@cwsys.cwsent.com>
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but the hardware mirroring is disabled in bios ( Asus P4P800 deluxe ) , and I also have array from ad0 and ad2 disk, which are connected to normal ICH5 controller, also when rebuilding there is no i/o shown there is no there mention about any raid support in them: atapci0: <Intel ICH5 UDMA100 controller> port 0xfc00-0xfc0f,0-0x3,0-0x7,0-0x3,0-0x7 at device 31.1 on pci0 atapci1: <Intel ICH5 SATA150 controller> port 0xef90-0xef9f,0xefa8-0xefab,0xefa0-0xefa7,0xefac-0xefaf,0xefe0-0xefe7 irq 18 at device 31.2 on pci0 ----- Original Message ----- From: "Cy Schubert" <Cy.Schubert@komquats.com> To: "Putinas Piliponis" <putinas.piliponis@icnspot.net> Sent: Tuesday, February 03, 2004 2:55 PM Subject: Re: atacontrol rebuild and iostat > In message <04cf01c3ea3f$56394960$0464a8c0@spotripoli.local>, "Putinas > Piliponi > s" writes: >> Hmm, another notice... >> I created array, right now it's rebuilding >> >> atacontrol status ar0 >> ar0: ATA RAID1 subdisks: ad4 ad6 status: REBUILDING 3% completed >> >> to check is it really doing what I expect I run >> iostat ad4 ad6 1 >> and I see 0 transfer to devices: >> pilkis@freebsd:/usr/src# iostat ad4 ad6 1 >> tty ad4 ad6 cpu >> tin tout KB/t tps MB/s KB/t tps MB/s us ni sy in id >> 1 1219 0.50 0 0.00 0.50 0 0.00 17 0 6 1 76 >> 0 180 0.00 0 0.00 0.00 0 0.00 0 0 2 3 96 >> 0 60 0.00 0 0.00 0.00 0 0.00 0 0 2 2 97 >> 0 60 0.00 0 0.00 0.00 0 0.00 0 0 2 2 95 >> 0 60 0.00 0 0.00 0.00 0 0.00 0 0 0 0 99 >> 0 60 0.00 0 0.00 0.00 0 0.00 1 0 1 2 96 >> >> to be sure what I didn't miss something I also run >> iostat ar0 >> also no transfers 0.00MB/s >> >> Why nothing ? > > Iostat doesn't see the I/Os because RAID rebuilds occur within the > controller, the I/Os are not initiated in the O/S nor any of its > utilities, > therefore the FreeBSDS kernel doesn't see them. The O/S doesn't see the > I/Os. Atacontrol see 3% because it specifically queries the controller for > that information. > > This is true of all hardware RAID controllers and true of all operating > systems. > > > Cheers, > -- > Cy Schubert <Cy.Schubert@komquats.com> http://www.komquats.com/ > BC Government . FreeBSD UNIX > Cy.Schubert@osg.gov.bc.ca . cy@FreeBSD.org > http://www.gov.bc.ca/ . http://www.FreeBSD.org/ > > > >
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