Hello, On 09/10/2010 05:16 PM, Hugo Antunes wrote: > Greetings, > > Following the list this pasts days as a sysadmin, building a big machine > with 45 sata2 disks (WD green 1.5TB), Sil3124 4 ports sata2 with 9 port > multipliers with 5 each also from Silicom image. > > This machine should smoke but it doesn't, attached is the dmesg dump > Using Ubuntu/server 10.4 2.6.32-25-server x86_64 using sata_sil24 > disks and bios controlers supports Western Digital Green drivers or > any other kind of disks, sort of bug or simply a sysctl value. will > provide more logs if needed, 2.6.36-rc3 ? The errors are across different drives. Most reported error statfus are bogus. They are just copy of the command TF. The ones which are valid are... [ 6214.444011] ata8.01: cmd 60/70:68:88:9c:41/00:00:29:00:00/40 tag 13 ncq 57344 in [ 6214.444012] res 41/84:00:88:9c:41/00:00:29:00:00/40 Emask 0x410 (ATA bus error) <F> [ 6215.402708] ata8.04: cmd 60/28:60:a8:b0:41/00:00:29:00:00/40 tag 12 ncq 20480 in [ 6215.402709] res 41/84:00:a8:b0:41/00:00:29:00:00/40 Emask 0x410 (ATA bus error) <F> [ 6216.016810] ata8.02: cmd 60/40:08:90:b7:41/00:00:29:00:00/40 tag 1 ncq 32768 in [ 6216.016811] res 41/84:00:90:b7:41/00:00:29:00:00/40 Emask 0x410 (ATA bus error) <F> and so on. They all indicate that the drives are seeing CRC errors on the link. If you boot w/ libata.force=1.5Gbps, does it make any difference? I suppose the drives are connected via backplane, right? Faulty backplanes aren't too uncommon so if possible trying to connect some other way would be a good idea. Also, if you remove some, say, half of the drives, does it make any difference? Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
