Large time shift causes OSD to hit suicide timeout and ABRT

2013-10-03 Thread Andrey Korolyov
Hello, Not sure if this matches any real-world problem: step time server 192.168.10.125 offset 30763065.968946 sec #0 0x7f2d0294d405 in raise () from /lib/x86_64-linux-gnu/libc.so.6 #1 0x7f2d02950b5b in abort () from /lib/x86_64-linux-gnu/libc.so.6 #2 0x7f2d0324b875 in

Build failure after merge of ceph tree

2013-10-03 Thread Mark Brown
After merging the ceph tree into -next an x86 allmodconfig build fails with: fs/ceph/file.c: In function ‘ceph_sync_read’: fs/ceph/file.c:437:25: error: ‘struct iov_iter’ has no member named ‘iov’ void __user *data = i-iov[0].iov_base + i-iov_offset; ^

Re: [ceph-users] ceph-create-keys hung

2013-10-03 Thread Joao Eduardo Luis
On 10/03/2013 02:44 PM, Abhay Sachan wrote: Hi All, I have tried setting up a ceph cluster with 3 nodes (3 monitors). I am using RHEL 6.4 as OS with dumpling(0.67.3) release. Ceph cluster creation (using ceph-deploy as well as mkcephfs), ceph-creates-keys doesn't return on any of the servers.

Re: Large time shift causes OSD to hit suicide timeout and ABRT

2013-10-03 Thread Sage Weil
On Thu, 3 Oct 2013, Andrey Korolyov wrote: Hello, Not sure if this matches any real-world problem: step time server 192.168.10.125 offset 30763065.968946 sec Heh.. yeah, we use timestamps in lots o fplaces for things like timeouts. Small time steps are fine but big ones can easily cause

Re: hung task on page invalidate

2013-10-03 Thread David Howells
Milosz Tanski mil...@adfin.com wrote: Stores : ops=10257 run=67477 pgs=57220 rxd=62216 olm=14 I think this line probably shows the problem. The olm=14 indicates that 14 pages were found over the store limit set on the object. Look in fscache_write_op() for: if (page-index

A call for teuthology users

2013-10-03 Thread Loic Dachary
Hi Ross Patrick, During tonight talk about teuthology I suggested that, if you think it's appropriate, you could say a word during your talk in London next week. Although teuthology is still rough around the edges, it's definitely useable and useful, even outside inktank. If you could invite

Weekly teuthology meeting #3

2013-10-03 Thread Loic Dachary
Hi, Today 8pm paris time / CEST was the thrid teuthology meeting. The general idea of these meetings is to get together developers using teuthology ( or willing to use teuthology ) outside of Inktank and people using it inside inktank. The goal is to help transition from an internal tool to

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a couple hot/cold classification storage papers

2013-10-03 Thread Sage Weil
http://131.107.65.14/pubs/176690/ColdDataClassification-icde2013-cr.pdf - identify hot/cold records for an in-memory database - in-memory lru is discarded ot of hand due to overhead - they do a simple log (or log a sample of say 10% of accesses) an present various algorithms for estimating K

xattr limits

2013-10-03 Thread David Zafman
I want to record with the ceph-devel archive results from testing limits of xattrs for Linux filesystems used with Ceph. Script that creates xattrs with name user.test1, user.test2, …. on a single file 3.10 linux kernel ext4 value bytes number of entries 1 148 16