Quoting Mark Johnston <markj_at_freebsd.org> (from Tue, 28 Aug 2018 10:48:42 -0400): > On Tue, Aug 28, 2018 at 10:25:39AM -0400, Allan Jude wrote: >> On 2018-08-28 02:40, Alexander Leidinger wrote: >> > Hi, >> > >> > top reports missing sysctl kstat.zfs.misc.arcstats.other_size for >> > 12.0-alpha3 with a top from an old-ish -current. >> > >> > Is/will this be handled via a compat-11 sysctl (my kernel is without >> > compat-xx), or did this slip through? >> That is not something that a compat-xx package can handle. > > s/package/kernel option/? Sorry, the COMPAT_FREEBSDx kernel options was what I had in mind when I wrote this. >> That arcstat was broken up into 3 individual stats, which the >> 12.0-alpha3 version of top will sum together for you. >> >> I don't think we've had compat shims like this for previous versions of >> top, I recall having similar issues when the 'laundry' counter was >> introduced. > > IIRC that would have been the inverted case of running a newer top(1) > with an older kernel lacking the v_laundry_pages sysctl. In general I'd > expect us to support running an older top(1) with newer kernels if we > don't have to bend over backwards to provide compatibility. If the new top is summing the 3 up anyway, it sounds like we could provide the old one as backwards compatibility, even if it is redundant. I rather have an redundant counter and an old top working (in the generic case of what we promise to our users; in this specific case for me I just need to get around to update the jails on the corresponding systems), than bailing out without displaying anything. Bye, Alexander. -- http://www.Leidinger.net Alexander_at_Leidinger.net: PGP 0x8F31830F9F2772BF http://www.FreeBSD.org netchild_at_FreeBSD.org : PGP 0x8F31830F9F2772BFReceived on Wed Aug 29 2018 - 03:44:44 UTC
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