Verification of Crush Rules

I have created a cluster with 2 nodes and 6 osds each. I would like to verify if my pgs are being placed on the correct nodes based on my crushmap. I would like to make sure that my replication (x2, default) is not placed on the same host. Osd.0 through 5 is on host0 and osd.6 through osd.11 is

Re: Servers with 40+ disks : to group or not to group ?

On Sat, Jul 2, 2011 at 6:30 AM, Wilfrid Allembrand wrote: > Hi everyone, > > I'm trying to figure out what is the best OSD solution with an > infrastructure made up of servers with a lot a disks in each. Say, for > exemple you have 4+ nodes like Sun Fire X4500 (code-named Thumper). > Each node is

Re: Question: How does Ceph go from filename to object?

On Mon, Jul 4, 2011 at 10:17 AM, Vasilakakos Giorgos wrote: > Hello folks, I have a question: > I know files get mapped to objects and those objects to OSDs but how > exactly do we go from one to the other? > What I mean is, given the filename I want to access how does Ceph find > the relevant obj

Re: Availability question of RADOS

On Mon, Jul 4, 2011 at 7:10 PM, Fusheng Han wrote: > Hello, Wido > > I appreciate your answer. > And some more discussion goes below. > > On Tue, Jul 5, 2011 at 1:54 AM, Wido den Hollander wrote: >> Hi, >> >> On Tue, 2011-07-05 at 00:25 +0800, Fusheng Han wrote: >>> Hi, all >>> >>> After reading

Re: MDS crash.

On Sun, 3 Jul 2011, Fyodor Ustinov wrote: > Hi! > > mds - 0.30 > > I can not to reproduce, sorry. > > mds/Locker.cc: In function 'void Locker::file_excl(ScatterLock*, bool*)', in > thread '0x7fefc6c68700' > mds/Locker.cc: 3982: FAILED assert(in->get_loner() >= 0 && > in->mds_caps_wanted.empty()

Re: Availability question of RADOS

Hello, Gregory Thank you for your explanation of the "Acting groups" mechanism. I think it is a good solution. But does it break the design philosophy of RADOS. In my own opinion, monitor cluster just take the cluster map and failure detection, failure recovery and data migration are all handled b

Re: [PATCH] Move stat/*.log to the end of logrotate.conf

Applied, thanks! On Mon, 4 Jul 2011, Alexandre Oliva wrote: > Logrotate ignores entries after a rule that doesn't match any files. > > Signed-off-by: Alexandre Oliva > --- > src/logrotate.conf | 19 ++- > 1 files changed, 10 insertions(+), 9 deletions(-) > > diff --git a/src

Re: Question: How does Ceph go from filename to object?

OK thanks, I think you've answered my question between this message and the links you provided. On Tue, Jul 5, 2011 at 18:29, Gregory Farnum wrote: > On Mon, Jul 4, 2011 at 10:17 AM, Vasilakakos Giorgos > wrote: >> Hello folks, I have a question: >> I know files get mapped to objects and those

Re: Availability question of RADOS

On Wed, 6 Jul 2011, Fusheng Han wrote: > Hello, Gregory > > Thank you for your explanation of the "Acting groups" mechanism. I > think it is a good solution. > But does it break the design philosophy of RADOS. In my own opinion, > monitor cluster just take the cluster map and failure detection, >

ceph lock

HI everyone, I want to consult everybody ceph file system, whether to support the PHP flock ()? If that is not like NFS flock () support? thanks! -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majord...@vger.kernel.org More majordomo info at

[GIT PULL] Ceph fixes for 3.0

Hi Linus, Please pull the following Ceph fixes from git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client.git for-linus These are all related to issues with O_DIRECT when the pointer and IO alignments do not match, and/or when there are holes in the file. Thanks! sage Sage Weil (3

Re: ceph lock

On Wed, 6 Jul 2011, biyan chen wrote: > HI everyone, I want to consult everybody ceph file system, whether to > support the PHP flock ()? > > If that is not like NFS flock () support? flock() and fcntl() locks are support with the kernel client, but not yet with the fuse-based client. sage -- T

Re: ceph lock

Thanks! 2011/7/6 Sage Weil : > On Wed, 6 Jul 2011, biyan chen wrote: >> HI everyone, I want to consult everybody ceph file system, whether to >> support the PHP flock ()? >> >> If that is not like NFS flock () support? > > flock() and fcntl() locks are support with the kernel client, but not yet >

Re: GCEPH error

Hello, So I updated packages + the kernel (now running 3.0.0-0300rc6-generic) but I continue to have the same error. Any idea ? Regards, Wilfrid 2011/7/4 Wilfrid Allembrand : > Hello, > > When trying to launch gceph (gceph -v : ceph version 0.30 > (commit:64b1b2c70f0cde39c72d5d724c65ea8afaaa00b9