Hello all, I do agree with Vineet on the gui. Ceph development team is doing a wonderful work on fixing bugs and bringing new features. I hope one day we'll have such a gui in ceph with all those usefull metrics. Keep up the good work ! Wilfrid 2011/7/12 Vineet Jain <vinjvinj@xxxxxxxxx>: > Thanks for the offer to help. I have limited hardware at the moment > and am going with another solution. My preference would be to have a > rock solid simple setup first. One MDS, One monitor, and a few OSD's > all on the same machine, but it should be very difficult to crash the > system in the most simple setup. And if you do there should be a fail > safe way to bring it back (I'm okay if I loose the last x hours of > changes). Unfortunately, I was able to crash the mds twice in a just a > few hours of use with no simple way to revert back my changes. > > On trying moosefs, I got much further along (Ceph has a lot more > functionality than moosefs so this might not be a fair comparison. For > me, I'm willing to give up functionality for stability). I did crash > moosefs once but, they snapshot their meta data so I was able to > revert back to a file an hour back and was back and was back up and > running wit no help from outside. They also have a very cool web > interface. > > I'll be watching ceph closely and will be back in a few months to try > it again. Thanks for all your hard work. > > On Mon, Jul 11, 2011 at 12:24 PM, Tommi Virtanen > <tommi.virtanen@xxxxxxxxxxxxx> wrote: >> On Fri, Jul 8, 2011 at 20:39, Vineet Jain <vinjvinj@xxxxxxxxx> wrote: >>> Using ceph version 0.3 and the ceph kernel that comes with ubuntu 11.04. >>> >>> I've setup 5 osds and one one mon and mds on one machine. When I first >>> started, without writing any data to the ceph fs my mds would keep >>> crashing. I fixed that problem by deleting the mod data directory and >>> the ceph data directories and restarting ceph. I then started copying >>> test data from a 2tb external drive to my ceph fs. I left my computer >>> and came back and could not login to my machine. I saw that the >>> external drive light was blinking so something was going on. I did a >>> hard power off thinking I would just delete the last file that was >>> copied over and start over. >>> >>> As expected, I could not start up ceph again. I had to delete all the >>> data directories again to get ceph up again. Is there any way to flush >>> whatever to get ceph back to some sort of stage where you can enter >>> back into the fs without having to purge everything a start over? >> >> Can you please provide core dumps and log messages from those MDS >> crashes? Getting tickets filed at >> http://tracker.newdream.net/projects/ceph with the relevant >> information is what will help us fix your problems. >> >> Recovery, where not automatic, depends very much on the crash you saw. >> We'd be glad to help, but need more information to do so. >> > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
