Hi Markus, You need to remove the erasure rule from the CRUSH map that was erroneously put in the default map for this version. The command you need is ceph osd crush rule rm <name> you can list rules with ceph osd crush rule ls and the one you want to remove is named 'erasure-default' or something like that. sage On Thu, 30 Jan 2014, Markus Goldberg wrote: > Hello Ilya, > thank you for your help. > I first tried 'ceph osd crush tunables legacy' on each server with rebooting. > That didn't help anything. I though, that running this command the feature > should be disabled, but the error remains. > > In the past i only did rolling ceph-upgrades with 'apt-get upgrade'. That > always went fine, even kernel-upgrades with rolling reboots. > But i never did a downgrade. > Is that easyly possible ? How ? How can i go to a specify version like 0.73 or > 0.74 ? > > Thank you, > Markus > Am 29.01.2014 13:19, schrieb Ilya Dryomov: > > On Wed, Jan 29, 2014 at 1:58 PM, Markus Goldberg > > <goldberg@xxxxxxxxxxxxxxxxx> wrote: > > > Hi, > > > i can't mount.ceph: > > > mount.ceph bd-0:/ /mnt/myceph -v -o > > > name=admin,secretfile=/etc/ceph/admin.secret > > > parsing options: name=admin,secretfile=/etc/ceph/admin.secret > > > mount error 5 = Input/output error > > > > > > ceph -s is OK, > > > > > > When i look at /var/log/syslog, i can see: > > > Jan 29 12:22:06 bd-0 kernel: [10333.825859] libceph: mon0 > > > xxx.xxx.xxx.xxx:6789 feature set mismatch, my 4a042aca < server's > > > 104a042aca, missing 1000000000 > > > Jan 29 12:22:06 bd-0 kernel: [10333.827302] libceph: mon0 > > > xxx.xxx.xxx.xxx:6789 socket error on read > > > > > > So i seems, that a feature should be disabled. I think it is Crush V2. > > > > > > What should i do ? > > > > > > Server and Client are Ubuntu 13.04, Kernel 3.12.6. I also tried 3.13 but > > > without success. > > > This is ceph 0.75 > > Yes, it's CRUSH_V2. 0.75 is a development release, so you should > > either go back to Emperor (0.72) or use (with caution!) a development > > kernel. Support for CRUSH_V2 will be in 3.14 and is in mainline as of > > yesterday, however I wouldn't advise running a pre-rc1 kernel. > > Instead, you can grab a master branch of ceph-client.git - it has > > CRUSH_V2 bits and is based on 3.13-rc3. (I think it can be safely > > rebased onto 3.13 final too.) > > > > Thanks, > > > > Ilya > > > -- > MfG, > Markus Goldberg > > -------------------------------------------------------------------------- > Markus Goldberg Universität Hildesheim > Rechenzentrum > Tel +49 5121 88392822 Marienburger Platz 22, D-31141 Hildesheim, Germany > Fax +49 5121 88392823 email goldberg@xxxxxxxxxxxxxxxxx > -------------------------------------------------------------------------- > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >
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