(Silly me, my first attempt didn't cc the list, sorry.) In message <04cf01c3ea3f$56394960$0464a8c0_at_spotripoli.local>, "Putinas Piliponis" 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_at_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_at_komquats.com> http://www.komquats.com/ BC Government . FreeBSD UNIX Cy.Schubert_at_osg.gov.bc.ca . cy_at_FreeBSD.org http://www.gov.bc.ca/ . http://www.FreeBSD.org/Received on Tue Feb 03 2004 - 04:08:19 UTC
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