May 11, 2011 
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May 11, 2011 NOTICE: This channel is no longer actively logged.
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I'm noticing pretty busy writes through iostat during times when activity should be low. Looking at iosnoop and iotop it's mostly from "sched". Any ideas on what would cause this?[06:38:49] *** jamesd_ has joined ##nexenta[06:39:59] *** Thrae has quit IRC[06:40:12] *** Pathin has quit IRC[06:42:12] *** Pathin has joined ##nexenta[06:48:56] <kdavy> cnagele, can you tell where the writes go? to the data zpool or the syspool for example?[06:49:18] <cnagele> Hey :) I was trying to find a tool to show that, but was not sure.[06:49:34] <kdavy> it could be a runner process or an auto-service, likely a runner[06:49:52] <cnagele> Although, from iotop I can see that it is writing to the devices in my pool that I use for NFS[06:50:15] <kdavy> cnagele, inside nmc "show performance " -> tab complete will give you tons of options for watching what is going on[06:51:40] <kdavy> if "sched" is an actual process (not sure it is?), you could also grab its PID from "prstat" and then "truss" it to see what it's doing - maybe the function names it calls will give you a hint[06:52:31] <cnagele> The PID is 0. I am on 2.2 while we migrate, so the performance tools in nmc are not as good.[06:52:49] *** Edgeman has quit IRC[06:53:20] <kdavy> ah. hm. 0 means it's the kernel scheduler[06:53:53] <kdavy> * kernel thread scheduler, iirc[06:53:58] <cnagele> Right. I've been searching like crazy and the only thing I could find is that by turning off atime it will check on its own.[06:54:44] *** Pathin has quit IRC[06:55:02] <cnagele> http://opensolaris.org/jive/thread.jspa?messageID=432620[06:55:30] *** Pathin has joined ##nexenta[06:55:57] <cnagele> Actually, I just read that again. I think the comment meant he "should" turn off atime. I usually have it off by default.[06:56:27] <kdavy> hrm. define "pretty busy writes", first of all?[06:56:47] <cnagele> sure, sec[06:57:49] <cnagele> 24.0 1702.8 1252.1 2034.4[06:58:21] <kdavy> doesnt tell me anything... i'd like to see a trend[06:58:37] <kdavy> here's an interesting post http://osdir.com/ml/solaris.opensolaris.performance/2007-09/msg00026.html[06:58:42] <cnagele> The reason I am looking into it so much is because the writes never slow down. This is odd because we are a read heavy system.[07:00:16] <kdavy> well, if anything my advice to you would be to upgrade. but you're already doing that[07:00:41] <kdavy> 3.0.5 just came out with a few important fixes[07:01:48] <cnagele> Yeah, that is what we will migrate to. The problem is, this activity is causing problems during the day when activity is high.[07:01:57] *** Edgeman has joined ##nexenta[07:07:54] *** Pathin has quit IRC[07:09:26] *** Pathin has joined ##nexenta[07:19:36] *** alhazred has joined ##nexenta[07:22:36] *** Pathin has quit IRC[07:23:16] *** Pathin has joined ##nexenta[07:24:03] *** Thrae has joined ##nexenta[07:35:58] *** Pathin has quit IRC[07:37:23] *** Pathin has joined ##nexenta[07:43:18] *** cnagele has quit IRC[07:50:33] *** Pathin has quit IRC[07:51:10] *** Pathin has joined ##nexenta[08:03:11] *** Pathin has quit IRC[08:04:59] *** Pathin has joined ##nexenta[08:18:02] *** Pathin has quit IRC[08:18:58] *** Pathin has joined ##nexenta[08:31:24] *** Pathin has quit IRC[08:33:01] *** Pathin has joined ##nexenta[08:38:11] *** kart_ has quit IRC[08:45:24] *** Pathin has quit IRC[08:53:44] *** kart_ has joined ##nexenta[09:09:59] *** Torpeo is now known as zz_Torpeo[09:35:17] *** stoxx has quit IRC[09:35:23] *** stoxx has joined ##nexenta[09:46:22] *** Tweener has joined ##nexenta[09:47:09] *** frank has joined ##nexenta[09:47:15] <frank> hi[10:04:06] <kdavy> frank: that was a very open-ended question[10:14:06] *** Darkman_ has joined ##nexenta[10:30:32] *** zz_Torpeo is now known as Torpeo[10:32:12] *** nacx has joined ##nexenta[10:34:04] *** DreamCatcher has joined ##nexenta[10:58:39] *** andy_js has joined ##nexenta[11:06:33] *** anatoly_l has joined ##nexenta[11:08:11] <frank> I downloaded and installed NexentaStor-Community-3.0.5.iso. Now the installer is asking me for a key. Why?[11:14:39] *** Orionau has quit IRC[11:16:01] *** Orionau has joined ##nexenta[11:20:54] *** anatoly_l has quit IRC[11:22:10] *** frank__ has joined ##nexenta[11:23:44] <frank__> Hi, I requested a key from http://www.nexenta.com/corp/developer-edition-registration. This key doesn't work. I'm confused about the url because the site http://www.nexentastor.org/projects/site/wiki/CommunityEdition links to that url.[11:23:51] <frank__> I'm no developer, just a user[11:28:14] *** frank has quit IRC[11:33:40] *** anatoly_l has joined ##nexenta[11:36:27] *** anatoly_l has quit IRC[11:47:08] *** andy_js has quit IRC[11:48:17] *** andy_js has joined ##nexenta[11:56:27] *** McBofh has quit IRC[12:02:21] *** anatoly_l has joined ##nexenta[12:03:48] *** Sergef2 has quit IRC[12:08:26] *** kart_ has quit IRC[12:11:28] *** Oriona has joined ##nexenta[12:12:41] *** anatoly_l has quit IRC[12:12:54] *** Orionau has quit IRC[12:19:07] *** anatoly_l has joined ##nexenta[12:20:37] *** anatoly_l has quit IRC[12:21:13] *** anatoly_l has joined ##nexenta[12:33:26] *** anatoly_l has quit IRC[12:34:40] *** tsukasa has joined ##nexenta[13:03:54] *** Torpeo is now known as zz_Torpeo[13:05:23] *** swy has joined ##nexenta[13:15:19] *** eXeC001er has joined ##nexenta[13:29:33] *** swy has quit IRC[13:45:33] *** McBofh has joined ##nexenta[13:45:52] *** eXeC001er has quit IRC[13:51:42] *** eXeC001er has joined ##nexenta[14:03:18] *** eXeC001er has quit IRC[14:03:51] *** eXeC001er has joined ##nexenta[14:06:32] *** zz_Torpeo is now known as Torpeo[14:08:36] *** wica has joined ##nexenta[14:08:38] <wica> Hi[14:09:45] <wica> I have some problems setting up nfs on nexenta. After I created a nfs share and mount it in Ubuntu, the uid and gid stay on nobody nogroup[14:10:06] <wica> I have on nexenta and ubuntu the same user with the same uid[14:10:57] <wica> I think there is a problem with idmap[14:13:04] *** Orionau has joined ##nexenta[14:17:23] *** Oriona has quit IRC[14:21:57] *** kart_ has joined ##nexenta[14:23:44] <nahamu> wica: is it getting mounted over NFSv3 or v4?[14:24:02] <wica> nahamu: Ubuntu does default nfsv4[14:25:14] <nahamu> does 'domainname' return the same value on both client and server?[14:26:05] <wica> Yep[14:26:39] <nahamu> is that value also in your /etc/idmapd.conf on the client side?[14:27:40] <wica> nahamu: No,[14:27:51] <nahamu> that might be your problem[14:28:00] <wica> looking in to it[14:28:09] <nahamu> https://help.ubuntu.com/community/NFSv4Howto[14:29:40] <nahamu> that needs to be set correctly, /etc/default/nfs-common needs to have IDMAPD enabled, and you'll want to restart the nfs-common service[14:30:04] <wica> Ps. nfsv3 on ubuntu I have that allready, because a other nfs server[14:30:16] <Darkman_> wica: did you uncheck the anonymous options in the share and set the ip of the client as root/read-write?[14:30:55] <Darkman_> oh, sorry, guess you don't use the nexentastore[14:31:14] <nahamu> Also, root being allowed read-write isn't always desirable[14:31:58] <wica> root rw is not desirable[14:33:52] <nahamu> wica, is it working now?[14:34:02] <wica> not reaaly[14:34:05] <wica> 3 sec[14:35:25] <wica> nahamu: Nop, I get only the correct uid and gid when I use nfsv3[14:35:42] <nahamu> that still sounds like an idmapd problem[14:35:46] <wica> Yep[14:35:48] <nahamu> which steps did you take?[14:37:49] <Darkman_> well, without root its hard to "manage" the share from the client, as you're not allowed to create any directory as root[14:38:15] <Darkman_> thats why i mentioned ,)[14:38:58] <wica> in /etc/default/nfs-common NEED_IDMAPD=yes[14:39:13] <wica> in /etc/idmapd.conf set the correct domainname[14:39:22] <wica> checked the domainname on the server and the client[14:39:30] <wica> on the client restarted idmapd[14:39:55] <wica> nfs-common service is no longer on ubuntu 11.04[14:40:31] <nahamu> ah. but as long as you restarted idmapd that should be fine[14:40:37] <wica> Yep[14:40:46] <Darkman_> does the idmapd run? should be easy to check: ps auxwww | grep idmap[14:40:52] <nahamu> perhaps try unmounting it and remounting it now that idmapd is restarted?[14:41:00] <wica> is running\[14:41:11] <Darkman_> k[14:41:24] <wica> strange[14:41:30] <wica> I did remount the nfs[14:41:37] <wica> but now it looks fine[14:41:54] *** POloser has left ##nexenta[14:41:57] <nahamu> yeah, sometimes there' a small delay[14:42:02] <nahamu> that freaked me out the other day[14:42:02] <wica> great[14:42:05] <wica> thnx nahamu :)[14:42:10] <nahamu> no problem[14:42:26] <Darkman_> hehe, yeah, those delays can drive you nuts[14:47:55] <wica> Yep[14:51:12] *** swy has joined ##nexenta[14:52:57] *** Torpeo is now known as zz_Torpeo[15:22:54] *** myers has joined ##nexenta[15:29:16] *** myers has quit IRC[15:30:15] *** DreamCatcher has quit IRC[15:30:19] *** myers has joined ##nexenta[15:32:47] *** eXeC001er has quit IRC[15:33:26] *** myers has quit IRC[15:33:43] *** myers has joined ##nexenta[15:42:23] <RichiH> http://paste.debian.net/116646/[15:42:43] <RichiH> why can't it find that device?[15:42:46] <RichiH> it's there...[15:49:37] <nahamu> RichiH: I think because that detach would degrade the vdev[15:49:46] <RichiH> it can't find it[15:49:59] <RichiH> and it's raidz[15:50:14] <nahamu> right, it wouldn't destroy the vdev, just degrade it[15:50:38] <RichiH> correct[15:50:41] <RichiH> which is what i want[15:50:57] <nahamu> did you try offlining the device?[15:51:13] <RichiH> i want to test live failover, restoration, etc[15:51:35] <RichiH> so while i didn't try, i want/need/must make this work while live[15:51:48] <RichiH> if all else fails, i will just have them pull the disk[15:52:03] <nahamu> did you try zfs offline?[15:52:39] <RichiH> no, as i want to do it live[15:52:46] <RichiH> and according to the docs, it's not needed[15:52:57] <RichiH> also, the claims it can't find it[15:53:04] <RichiH> not that it can't do it once it's been found[15:53:18] <nahamu> you could try giving the full path to the device[15:53:26] <RichiH> i did[15:53:43] <RichiH> /dev/dsk/c3d0 and /dev/rdsk/c3d0[15:53:54] <RichiH> unless those are the wrong ones?[15:57:14] *** zz_Torpeo is now known as Torpeo[15:57:25] <nahamu> I think those are right[15:57:30] <nahamu> I'm a bit stumped[15:57:45] <nahamu> I've never tried to remove a device from a raidz before, though.[16:02:45] *** myers has quit IRC[16:06:27] *** Torpeo is now known as zz_Torpeo[16:09:08] *** myers has joined ##nexenta[16:10:01] *** myers has quit IRC[16:11:26] *** myers has joined ##nexenta[16:11:59] *** myers has quit IRC[16:14:02] *** swy has quit IRC[16:19:45] *** Orionau has quit IRC[16:19:56] *** Oriona has joined ##nexenta[16:25:11] *** swy has joined ##nexenta[16:33:41] *** myers has joined ##nexenta[16:57:41] *** kart_ has quit IRC[17:01:40] *** ikarius has quit IRC[17:02:41] *** kart_ has joined ##nexenta[17:03:32] *** Darkman_ has quit IRC[17:11:51] *** trbs has joined ##nexenta[17:34:54] *** Sergef has joined ##nexenta[17:39:17] *** asqui has joined ##nexenta[17:39:19] *** ikarius has joined ##nexenta[17:48:20] *** swy has quit IRC[17:53:34] *** swy has joined ##nexenta[17:59:57] *** swy has quit IRC[18:00:53] *** swy has joined ##nexenta[18:03:59] *** HyperJohnGraham has joined ##nexenta[18:05:16] *** swy_ has joined ##nexenta[18:06:02] *** JagWaugh has joined ##nexenta[18:07:40] *** swy_ has quit IRC[18:08:59] *** swy has quit IRC[18:13:46] *** zz_Torpeo is now known as Torpeo[18:17:08] *** JagWaugh has quit IRC[18:30:43] *** myers has quit IRC[18:35:05] *** myers has joined ##nexenta[18:38:15] *** frank__ has quit IRC[18:40:32] *** Tweener has quit IRC[18:44:51] *** swy has joined ##nexenta[18:44:59] *** swy has joined ##nexenta[18:45:51] *** swy has quit IRC[18:50:15] *** swy has joined ##nexenta[19:12:25] *** nacx has quit IRC[19:14:08] *** yalu has quit IRC[19:15:59] *** yalu has joined ##nexenta[19:24:24] *** swy has quit IRC[19:34:10] *** swy has joined ##nexenta[19:53:22] *** eXeC001er has joined ##nexenta[19:54:25] *** samppah has quit IRC[19:58:23] *** JagWaugh has joined ##nexenta[20:00:14] *** samppah has joined ##nexenta[20:01:12] *** ahayes has joined ##nexenta[20:12:28] *** kart_ has quit IRC[20:19:05] *** eXeC001er has quit IRC[20:19:36] *** swy has quit IRC[20:27:19] *** kwazar has joined ##nexenta[20:36:35] *** swy has joined ##nexenta[21:02:07] *** myers has quit IRC[21:14:09] *** myers has joined ##nexenta[21:22:40] *** myers has quit IRC[21:33:36] *** swy has quit IRC[22:04:49] *** alhazred has quit IRC[22:15:52] *** myers has joined ##nexenta[22:26:58] *** kreign has quit IRC[22:29:13] *** ahayes has quit IRC[22:43:05] *** JagWaugh has quit IRC[22:52:46] *** Sergef2 has joined ##nexenta[22:53:39] *** Sergef has quit IRC[23:19:29] *** myers has quit IRC[23:28:31] *** Sergef has joined ##nexenta[23:29:47] *** Sergef2 has quit IRC[23:44:53] <diss3ntive> http://www.nexenta.org/issues/214 <--- best advice....Get rid of a popular product?