Messages in this thread | | | Subject | Re: iostats broken for devices with major number > DK_MAX_DISK (16) | From | James Stevenson <> | Date | 12 Nov 2002 23:01:03 +0000 |
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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.
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