Messages in this thread | | | Subject | Re: iostats broken for devices with major number > DK_MAX_DISK (16) | Date | Tue, 12 Nov 2002 15:25:43 -0800 | From | Cliff White <> |
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> On Tue, 2002-11-12 at 20:35, Per Andreas Buer wrote: > > Hi, > > > > sorry for the intrusion. I noticed iostats didn't display statistics for > > devices on Mylex RAID constrollers. Det statistics are completely > > missing in /proc/stat. The reason seems to be an assumption that disks > > have major numbers which are below 16 > > (http://lxr.linux.no/source/include/linux/kernel_stat.h#L15) which is > > used by http://lxr.linux.no/source/fs/proc/proc_misc.c#L344. > > > > Devices on Mylex-controllers have major number 48. Would it break > > anything if DK_MAX_MAJOR if set higher (e.g. 64)? > > > > AFAIK this goes for both 2.4 and the 2.5 series. > > i have been runing with 2.4.x kernel with this number > set higher i have still yet to see any problem with it > other than using more memory. > We've had the same problem, and we've been running with DK_MAX_MAJOR == 64, using megaraid and acceleraid 2000 controllers. Haven't seen any problems cliffw OSDL > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >
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