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   April 10, 2019
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[01:57:49] <gitomat> [illumos-gate] 10682 strftime(3c): Replace (char *)0 by NULL -- Marcel Telka <marcel at telka dot sk>
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[07:48:58] <gitomat> [illumos-gate] 10632 pm: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
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[07:55:05] <gitomat> [illumos-gate] 10634 qlge: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[07:57:07] <gitomat> [illumos-gate] 10646 softmac: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[07:58:57] <gitomat> [illumos-gate] 10667 ipmi: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:01:36] <gitomat> [illumos-gate] 10666 amd8111s: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:03:35] <gitomat> [illumos-gate] 10650 timerfd: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:05:29] <gitomat> [illumos-gate] 10658 kiconv_ja: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:10:34] <gitomat> [illumos-gate] 10659 sha2: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:16:24] <gitomat> [illumos-gate] 10660 swrand: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:18:37] <gitomat> [illumos-gate] 10662 iscsit: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:21:11] <gitomat> [illumos-gate] 10663 stmf_sbd: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:23:18] <gitomat> [illumos-gate] 10664 vmxnet3s: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
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[08:26:18] <gitomat> [illumos-gate] 10668 e1000g: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
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[08:29:33] <gitomat> [illumos-gate] 10670 i40e: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:31:17] <gitomat> [illumos-gate] 10671 bnxe: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:33:55] <gitomat> [illumos-gate] 10673 ixgbe: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:36:02] <gitomat> [illumos-gate] 10674 profile: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[08:37:33] <tsoome> few patches:)
[08:37:40] <LeftWing> Indeed!
[08:38:51] <tsoome> about 200 more to come;)
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[11:39:44] <leoric> I'm looking for DDU binaries sources. Are there any archives available somewhere?
[11:43:14] <tsoome> DDU binaries?
[11:43:38] <tsoome> DDU was gone with introduction of grub in solaris 10
[11:43:40] <leoric> device driver utility uses some binaries for which we miss sources
[11:44:01] <leoric> I mean ddu program from OSOL slim CD
[11:44:09] <tsoome> ou, you mean the too yea, i got it
[11:44:13] <tsoome> tool
[11:44:44] <leoric> It's python + some binary tools for which we miss sources
[11:44:45] <tsoome> I have run it like… once…:D
[11:46:57] <tsoome> https://github.com/alhazred/ddu ?
[11:47:29] <leoric> cool
[11:47:36] <tsoome> google;)
[11:47:54] <leoric> my google skill failed me :(
[11:49:16] <tsoome> np:)
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[16:22:43] <gitomat> [illumos-gate] 10628 nxge: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
[16:25:21] <gitomat> [illumos-gate] 10638 sd: NULL pointer errors -- Toomas Soome <tsoome at me dot com>
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[16:52:47] <kayront> gcc: error: unrecognized command line option '-msave-args'; did you mean '-mpush-args'?
[16:52:57] <kayront> compiling plyvel
[16:53:01] <kayront> lost cause?
[16:53:25] <tsoome> which gcc?
[16:53:27] <jperkin> install a gcc that supports it
[16:54:04] <kayront> gcc8
[16:54:18] <kayront> let's try with 7
[16:54:25] <tsoome> what distro?
[16:54:29] <kayront> smartos
[16:54:45] <jperkin> in that case gcc8 won't work, it doesn't have any of our patches
[16:55:31] <kayront> works with gcc7
[16:55:32] <kayront> cool
[16:55:45] <jperkin> if you install the build-essential package you'll always get the correct gcc for your image
[16:56:44] <kayront> btw, anything in illumos like freebsd's sockstat -l ?
[16:56:50] <kayront> lsof -p is a bit.. underwhelming
[16:57:57] <tsoome> ou
[16:58:01] <tsoome> port it:)
[16:58:09] <tsoome> it does look useful:)
[16:58:15] <kayront> it's crossed my mind :p
[16:59:31] <tsoome> I just did attempt to find one service with netstat, but it was easier to read docs.oracle.com instead…
[16:59:46] <tsoome> (it was on solaris 11)
[17:01:02] <kayront> yeah, of any OS I can think of, sockstat is by far the best
[17:01:20] <kayront> username, process name, ip/port, all nicely formatted, easy to get the info
[17:02:36] <rmustacc> There's a connstat that's in the progress of being finished up and upstreamed.
[17:03:02] <rmustacc> Though it's a little different.
[17:04:44] <kayront> tell us moar
[17:05:37] <tsoome> tsoome@beastie:/code/illumos-gate$ pkg search -r connstat
[17:05:38] <tsoome> tsoome@beastie:/code/illumos-gate$
[17:05:39] <tsoome> :P
[17:05:56] <rmustacc> melloc was upstreaming it from Delphix.
[17:06:10] <kayront> https://github.com/delphix/connstat/blob/master/module/src/connstat.c
[17:06:35] <rmustacc> We just landed our upstream of it and hopefully melloc will put it up to illumos shortly.
[17:07:06] <rmustacc> That said, accurate process mapping of sockets isn't the most straightforward. Depends which way you do it and how accurate you want it to be.
[17:07:16] <rmustacc> Because the kernel doesn't actually track the mapping of sockets to processes at all.
[17:07:59] <rmustacc> And the file descriptors that correspond to a socket can easily move between processes.
[17:08:20] <rmustacc> So it just depends which way you want to ask that question and what it is you're looking for.
[17:10:10] <kayront> hmm
[17:10:12] <kayront> interesting
[17:10:20] <andyf> I have an OmniOS branch with 'netstat -u' in it that I keep trying to get back to
[17:10:23] <kayront> so ipf for instance cannot block/allow traffic by user/group ?
[17:10:39] <andyf> I've tried several different implementations but it always has too much overhead
[17:11:05] <rmustacc> kayront: Not sure off hand. But here's a question for you in that case.
[17:11:14] <andyf> I see that 'netstat -u' on Solaris is at best an approximation
[17:11:16] <rmustacc> Is it the socket creator that counts for that or not?
[17:11:16] <kayront> oh and also, are there any up to date books on solaris internals? like the design & implementation of freebsd but for illumos
[17:11:43] <kayront> rmustacc: good question, I suppose so, yes
[17:12:09] <rmustacc> If you only care about the creator, that's not as hard to make a reality. But I'm not sure if that's naively what I'd expect or not.
[17:12:47] <rmustacc> Also, as different subsystems are improved, I at least try to leave them more thoroughly commented so its easier to understand and so that can live with the code.
[17:13:30] <kayront> bear in mind that I have read a grand total of 0 lines of illumos kernel source code
[17:13:57] <kayront> having said that .. if a process opens a socket, and a socket is associated with a process, it should be easy enough to make the association?
[17:14:11] <kayront> the process belongs to a user
[17:14:34] <rmustacc> kayront: What about when I pass that socket over a UDS?
[17:14:42] <andyf> It can be passed off to another process, or the process can fork - you then have two references to track
[17:14:44] <rmustacc> Or I fork and exec a new process that's suid?
[17:14:47] <andyf> and then parent or child can close it..
[17:15:02] <kayront> what is a UDS ?
[17:15:07] <rmustacc> Unix Domain Socket
[17:15:14] <kayront> ah
[17:15:15] <rmustacc> Sorry, should have spelled it out.
[17:15:25] <kayront> well, guess it's not ipf's business anymore at that point :p
[17:15:46] <rmustacc> So, I think it'd be an interesting feature to add.
[17:15:51] <kayront> if the binary is suid then logically I think it should belong to root or whoever the suid user is
[17:15:51] <rmustacc> Just a couple gotchas to sort out.
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[17:16:20] <rmustacc> kayront: Right, but what if I opened it as my user and then forked and execed a process that was suid? Now the user rmustacc and root both have the same socket open.
[17:17:07] <kayront> tricky
[17:17:25] <kayront> i'm not sure how it works at such a low level, both processes could write/read the socket at that point?
[17:17:30] <rmustacc> Yup.
[17:17:36] <rmustacc> It'll be round robin effectively.
[17:17:45] <rmustacc> Or a bit of whomever runs the race.
[17:18:01] <rmustacc> Though, it's more likely that you pass an fd and hold off on further action.
[17:18:18] <rmustacc> Usually a higher privileged thing does it and hands it off to a lesser privileged thing.
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[17:21:50] <kayront> not to derail, but:
[17:21:50] <kayront> <kayront> oh and also, are there any up to date books on solaris internals? like the design & implementation of freebsd but for illumos
[17:22:13] <rmustacc> I had a couple of replies to that above?
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[17:23:31] <rmustacc> But there's basically a slightly older Solaris Internals is the last major 'book'.
[17:23:41] <kayront> ah, missed them
[17:23:50] <rmustacc> Then otherwise, a bunch of us try to leave subsystems better commented so it can live with that.
[17:23:55] <rmustacc> Though that makes it less narrative driven.
[17:25:18] <kayront> while i'm shooting off in random directions, and without wanting to reboot the server to find out (heh), do you know if zfs l2arc persists reboots?
[17:25:44] <rmustacc> No, that has not been implemented.
[17:26:48] <kayront> would it be a matter of dumping some memory structures to disk on clean shutdown ?
[17:26:54] <kayront> or is it more complicated than that
[17:27:16] <rmustacc> I don't know, sorry.
[17:27:22] <rmustacc> Some folks have looked at it before.
[17:27:32] <rmustacc> The biggest thing would be bringing the on-disk mappings back into memory.
[17:27:40] <andyf> there are some notes here - https://wiki.illumos.org/display/illumos/Persistent+L2ARC
[17:27:53] <rmustacc> But I know various folks have looked at it and some have even mostly implemented it.
[17:28:22] <jlevon> LLooaaddiinngg //ooss//2200119900441100TT112211334455ZZ//ppllaattffoorrmm//ii8866ppcc//aammdd6644//bboooott__aarrcchhiivvee......
[17:28:23] <jlevon> hmm.
[17:28:27] <kayront> yeah iw as just wondering about this - i'm seeing massive performance gains from having 200G+ in l2arc (well, that's the point of course) and been wondering if the gains will be temporarily lost if the server reboot
[17:28:28] <jlevon> oh no tsoome
[17:28:28] <kayront> s
[17:28:56] <rmustacc> They will be lost if you reboot until it warms up again.
[17:29:04] <kayront> that's interesting andyf, thanks for the link
[17:29:05] <rmustacc> Unfortunately.
[17:29:17] <rmustacc> I think Saso from Nexenta had mostly implemented this?
[17:29:20] <kayront> indeed rmustacc, and so i was wondering if someone had thought of the same
[17:29:23] <kayront> apparently, yes
[17:29:52] <rmustacc> I think we thought about it back when they implemented the L2ARC as part of the fishworks boxes.
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[17:30:21] <rmustacc> Though it's not really fair to mention that, since I don't think they did anything more than think about it then. ;)
[17:31:46] <lewellyn> it would have taken time away from shouting at the disks ;)
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[18:05:53] <lewellyn> i still think that's one of the best demonstrations of environment vs technology ever done though
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[21:47:00] <richlowe> rmustacc: does that samba thread suggest I made things worse?
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[22:19:50] <rmustacc> richlowe: Not yet.
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[22:28:02] <richlowe> Glad to see my optimism is spreading!
[22:29:17] <richlowe> speaking of me making things worse, can I trick some more people into properly reviewing #10346
[22:29:56] <richlowe> jlevon?
[22:31:57] <jlevon> who's looked already?
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[22:39:35] <richlowe> tsoome, and rmustacc seemed mostly convinced I was probably right.
[22:40:07] <jlevon> then I'll skip, sorry..
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[23:12:48] <richlowe> Ok, I'll try to get that and the other ready for RTI then. Thanks
[23:13:09] <richlowe> I just often wish there were another step in the process that's "convince me I haven't fucked up"
[23:13:18] <richlowe> only rmustacc accepts CMIHFU's tho :(
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[23:19:54] <lewellyn> i accept "convince me you haven't fucked up"s but that's not quite the same :D
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   April 10, 2019
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