Is there a header or first line that appears in all ceph-mon stack dumps I can search for? The couple of ceph-mon stack dumps I've seen in web searches appear to all begin with "ceph version 0.xx", but those are from over a year ago. Is that still the case with 0.81 firefly code? -----Original Message----- From: Sage Weil [mailto:sweil@xxxxxxxxxx] Sent: Monday, August 04, 2014 10:09 AM To: Bruce McFarland Cc: Brian Rak; ceph-users at lists.ceph.com Subject: RE: Firefly OSDs stuck in creating state forever Okay, looks like the mon went down then. Was there a stack trace in the log after the daemon crashed? (Or did the daemon stay up but go unresponsive or something?) Thanks! sage On Mon, 4 Aug 2014, Bruce McFarland wrote: > 2014-08-04 09:57:37.144649 7f42171c8700 0 -- 209.243.160.35:0/1032499 > >> 209.243.160.35:6789/0 pipe(0x7f4204007dd0 sd=3 :0 s=1 pgs=0 cs=0 > l=1 c=0x7f4204001a90).fault > 2014-08-04 09:58:07.145097 7f4215ac3700 0 -- 209.243.160.35:0/1032499 > >> 209.243.160.35:6789/0 pipe(0x7f4204001530 sd=3 :0 s=1 pgs=0 cs=0 > l=1 c=0x7f4204001320).fault > 2014-08-04 09:58:37.145491 7f42171c8700 0 -- 209.243.160.35:0/1032499 > >> 209.243.160.35:6789/0 pipe(0x7f4204007dd0 sd=3 :0 s=1 pgs=0 cs=0 > l=1 c=0x7f4204003eb0).fault > 2014-08-04 09:59:07.145776 7f4215ac3700 0 -- 209.243.160.35:0/1032499 > >> 209.243.160.35:6789/0 pipe(0x7f4204001530 sd=5 :0 s=1 pgs=0 cs=0 > l=1 c=0x7f4204001320).fault > 2014-08-04 09:59:37.146043 7f42171c8700 0 -- 209.243.160.35:0/1032499 > >> 209.243.160.35:6789/0 pipe(0x7f4204007dd0 sd=5 :0 s=1 pgs=0 cs=0 > l=1 c=0x7f4204003eb0).fault > 2014-08-04 10:00:07.146288 7f4215ac3700 0 -- 209.243.160.35:0/1032499 > >> 209.243.160.35:6789/0 pipe(0x7f4204001530 sd=5 :0 s=1 pgs=0 cs=0 > l=1 c=0x7f4204001320).fault > 2014-08-04 10:00:37.146543 7f42171c8700 0 -- 209.243.160.35:0/1032499 > >> 209.243.160.35:6789/0 pipe(0x7f4204007dd0 sd=5 :0 s=1 pgs=0 cs=0 > l=1 c=0x7f4204003eb0).fault > > 209.243.160.35 - monitor > 209.243.160.51 - osd.0 > 209.243.160.52 - osd.3 > 209.243.160.59 - osd.2 > > -----Original Message----- > From: Sage Weil [mailto:sweil at redhat.com] > Sent: Sunday, August 03, 2014 11:15 AM > To: Bruce McFarland > Cc: Brian Rak; ceph-users at lists.ceph.com > Subject: Re: [ceph-users] Firefly OSDs stuck in creating state forever > > On Sun, 3 Aug 2014, Bruce McFarland wrote: > > Is there a recommended way to take every thing down and restart the > > process? I was considering starting completely from scratch ie OS > > reinstall and then using Ceph-deploy as before. > > If you're using ceph-deploy, then > > ceph-deploy purge HOST > ceph-deploy purgedata HOST > > will do it. Then remove the ceph.* (config and keyring) files from the current directory. > > > I've learned a lot and want to figure out a fool proof way I can > > document for others in our lab to bring up a cluster on new HW. I > > learn a lot more when I break things and have to figure out what > > went wrong so its a little frustrating, but I've found out a lot > > about verifying the configuration and debug options so far. My > > intent is to investigate rbd usage, perf, and configuration options. > > > > The "endless loop" I'm referring to is a constant stream of fault > > messages that I'm not yet familiar on how to interpret. I have let > > them run to see if the cluster recovers, but Ceph-mon always crashed. > > I'll look for the crash dump and save it since kdump should be > > enabled on the monitor box. > > Do you have one of the messages handy? I'm curious whether it is an OSD or a mon. > > Thanks! > sage > > > > > Thanks for the feedback. > > > > > > > On Aug 3, 2014, at 8:30 AM, "Sage Weil" <sweil at redhat.com> wrote: > > > > > > Hi Bruce, > > > > > >> On Sun, 3 Aug 2014, Bruce McFarland wrote: > > >> Yes I looked at tcpdump on each of the OSDs and saw > > >> communications between all 3 OSDs before I sent my first question to this list. > > >> When I disabled selinux on the one offending server based on your > > >> feedback (typically we have this disabled on lab systems that are > > >> only on the lab net) the 10 pages in my test pool all went to > > >> ?active+clean? almost immediately. Unfortunately the 3 default > > >> pools still remain in the creating states and are not health_ok. > > >> The OSDs all stayed UP/IN after the selinux change for the rest > > >> of the day until I made the mistake of creating a RBD image on > > >> demo-pool and it?s 10 ?active+clean? pages. I created the rbd, > > >> but when I attempted to look at it with ?rbd info? the cluster > > >> went into an endless loop trying to read a placement group and > > >> loop that I left running overnight. This morning > > > > > > What do you mean by "went into an endless loop"? > > > > > >> ceph-mon was crashed again. I?ll probably start all over from > > >> scratch once again on Monday. > > > > > > Was there a stack dump in the mon log? > > > > > > It is possible that there is a bug with pool creation that > > > surfaced by having selinux in place for so long, but otherwise > > > this scenario doesn't make much sense to me. :/ Very interested > > > in hearing more, and/or whether you can reproduce it. > > > > > > Thanks! > > > sage > > > > > > > > >> > > >> > > >> > > >> I deleted ceph-mds and got rid of the ?laggy? comments from ?ceph health?. > > >> The ?official? online Ceph docs on that ?coming soon? and most > > >> references I could find were pre firefly so it was a little trail > > >> and error to figure out to use the pool number and not it?s name > > >> to get the removal to work. Same with ?ceph mds newfs? to get rid of ?laggy-ness? in the ?ceph health? > > >> output. > > >> > > >> > > >> > > >> [root at essperf3 Ceph]# ceph mds rm 0 mds.essperf3 > > >> > > >> mds gid 0 dne > > >> > > >> [root at essperf3 Ceph]# ceph health > > >> > > >> HEALTH_WARN 96 pgs incomplete; 96 pgs peering; 192 pgs stuck > > >> inactive; 192 pgs stuck unclean mds essperf3 is laggy > > >> > > >> [root at essperf3 Ceph]# ceph mds newfs 1 0 --yes-i-really-mean-it > > >> > > >> new fs with metadata pool 1 and data pool 0 > > >> > > >> [root at essperf3 Ceph]# ceph health > > >> > > >> HEALTH_WARN 96 pgs incomplete; 96 pgs peering; 192 pgs stuck > > >> inactive; 192 pgs stuck unclean > > >> > > >> [root at essperf3 Ceph]# > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> From: Brian Rak [mailto:brak at gameservers.com] > > >> Sent: Friday, August 01, 2014 6:14 PM > > >> To: Bruce McFarland; ceph-users at lists.ceph.com > > >> Subject: Re: [ceph-users] Firefly OSDs stuck in creating state > > >> forever > > >> > > >> > > >> > > >> What happens if you remove nodown? I'd be interested to see what > > >> OSDs it thinks are down. My next thought would be tcpdump on the private interface. > > >> See if the OSDs are actually managing to connect to each other. > > >> > > >> For comparison, when I bring up a cluster of 3 OSDs it goes to > > >> HEALTH_OK nearly instantly (definitely under a minute!), so it's > > >> probably not just taking awhile. > > >> > > >> Does 'ceph osd dump' show the proper public and private IPs? > > >> > > >> On 8/1/2014 6:13 PM, Bruce McFarland wrote: > > >> > > >> MDS: I assumed that I?d need to bring up a ceph-mds for my > > >> cluster at initial bringup. We also intended to modify the CRUSH > > >> map such that it?s pool is resident to SSD(s). It is one of the > > >> areas of the online docs there doesn?t seem to be a lot of info > > >> on and I haven?t spent a lot of time researching. I?ll stop it. > > >> > > >> > > >> > > >> OSD connectivity: The connectivity is good for both 1GE and > > >> 10GE. I thought moving to 10GE with nothing else on that net > > >> might help with group placement etc and bring up the pages > > >> quicker. I?ve checked ?tcpdump? output on all boxes. > > >> > > >> Firewall: Thanks for that one - it?s the ?basic? I over looked > > >> in my ceph learning curve. One of the OSDs had selinux=enforcing > > >> ? all others were disabled. Changing that box and the 10 pages > > >> in my demo-pool (kept page count very small for sanity) are now > > >> ?active+clean?. The pages for the default pools ? data, > > >> metadata, rbd ? are still stuck in creating+peering or > > >> creating+incomplete. I did have to use manually set ?osd pool > > >> default min size = 1? from it?s default of 2 for these 3 pools > > >> to eliminate a bunch of warnings in the ?ceph health detail? > > >> output. > > >> > > >> I?m adding the [mon] setting you suggested below and stopping > > >> ceph-mds and bringing everything up now. > > >> > > >> [root at essperf3 Ceph]# ceph -s > > >> > > >> cluster 4b3ffe60-73f4-4512-b7da-b04e4775dd73 > > >> > > >> health HEALTH_WARN 96 pgs incomplete; 96 pgs peering; 192 > > >> pgs stuck inactive; 192 pgs stuck unclean; 28 requests are > > >> blocked > 32 sec; nodown,noscrub flag(s) set > > >> > > >> monmap e1: 1 mons at {essperf3=209.243.160.35:6789/0}, > > >> election epoch 1, quorum 0 essperf3 > > >> > > >> mdsmap e43: 1/1/1 up {0=essperf3=up:creating} > > >> > > >> osdmap e752: 3 osds: 3 up, 3 in > > >> > > >> flags nodown,noscrub > > >> > > >> pgmap v1483: 202 pgs, 4 pools, 0 bytes data, 0 objects > > >> > > >> 134 MB used, 1158 GB / 1158 GB avail > > >> > > >> 96 creating+peering > > >> > > >> 10 active+clean > > >> <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<!!!!!!!! > > >> > > >> 96 creating+incomplete > > >> > > >> [root at essperf3 Ceph]# > > >> > > >> > > >> > > >> From: Brian Rak [mailto:brak at gameservers.com] > > >> Sent: Friday, August 01, 2014 2:54 PM > > >> To: Bruce McFarland; ceph-users at lists.ceph.com > > >> Subject: Re: [ceph-users] Firefly OSDs stuck in creating state > > >> forever > > >> > > >> > > >> > > >> Why do you have a MDS active? I'd suggest getting rid of that at > > >> least until you have everything else working. > > >> > > >> I see you've set nodown on the OSDs, did you have problems with > > >> the OSDs flapping? Do the OSDs have broken connectivity between > > >> themselves? Do you have some kind of firewall interfering here? > > >> > > >> I've seen odd issues when the OSDs have broken private > > >> networking, you'll get one OSD marking all the other ones down. > > >> Adding this to my config helped: > > >> > > >> [mon] > > >> mon osd min down reporters = 2 > > >> > > >> > > >> On 8/1/2014 5:41 PM, Bruce McFarland wrote: > > >> > > >> Hello, > > >> > > >> I?ve run out of ideas and assume I?ve overlooked something > > >> very basic. I?ve created 2 ceph clusters in the last 2 > > >> weeks with different OSD HW and private network fabrics ? > > >> 1GE and 10GE. I have never been able to get the OSDs to > > >> come up to the ?active+clean? state. I have followed your > > >> online documentation and at this point the only thing I > > >> don?t think I?ve done is modifying the CRUSH map (although > > >> I have been looking into that). These are new clusters > > >> with no data and only 1 HDD and 1 SSD per OSD (24 2.5Ghz > > >> cores with 64GB RAM). > > >> > > >> > > >> > > >> Since the disks are being recycled is there something I > > >> need to flag to let ceph just create it?s mappings, but > > >> not scrub for data compatibility? I?ve tried setting the > > >> noscrub flag to no effect. > > >> > > >> > > >> > > >> I also have constant OSD flapping. I?ve set nodown, but > > >> assume that is just masking a problem that still > > >> occurring. > > >> > > >> > > >> > > >> Besides the lack of ever reaching ?active+clean? state > > >> ceph-mon always crashes after leaving it running > > >> overnight. The OSDs all eventually fill /root with with > > >> ceph logs so I regularly have to bring everything down > > >> Delete logs and restart. > > >> > > >> > > >> > > >> I have all sorts of output from the ceph.conf; osd boot > > >> ouput with ?debug osd -= 20? and ?debug ms = 1?; ceph ?w > > >> output; and pretty much all of the debug/monitoring > > >> suggestions from the online docs and 2 weeks of google > > >> searches from online references in blogs, mailing lists > > >> etc. > > >> > > >> > > >> > > >> [root at essperf3 Ceph]# ceph -v > > >> > > >> ceph version 0.80.1 > > >> (a38fe1169b6d2ac98b427334c12d7cf81f809b74) > > >> > > >> [root at essperf3 Ceph]# ceph -s > > >> > > >> cluster 4b3ffe60-73f4-4512-b7da-b04e4775dd73 > > >> > > >> health HEALTH_WARN 96 pgs incomplete; 106 pgs > > >> peering; 202 pgs stuck inactive; 202 pgs stuck unclean; > > >> nodown,noscrub flag(s) set > > >> > > >> monmap e1: 1 mons at > > >> {essperf3=209.243.160.35:6789/0}, election epoch 1, quorum > > >> 0 essperf3 > > >> > > >> mdsmap e43: 1/1/1 up {0=essperf3=up:creating} > > >> > > >> osdmap e752: 3 osds: 3 up, 3 in > > >> > > >> flags nodown,noscrub > > >> > > >> pgmap v1476: 202 pgs, 4 pools, 0 bytes data, 0 > > >> objects > > >> > > >> 134 MB used, 1158 GB / 1158 GB avail > > >> > > >> 106 creating+peering > > >> > > >> 96 creating+incomplete > > >> > > >> [root at essperf3 Ceph]# > > >> > > >> > > >> > > >> Suggestions? > > >> > > >> Thanks, > > >> > > >> Bruce > > >> > > >> > > >> > > >> > > >> > > >> _______________________________________________ > > >> > > >> ceph-users mailing list > > >> > > >> ceph-users at lists.ceph.com > > >> > > >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > >> > > >> > > >> > > >> > > >> > > >> > > > > > >
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