Hello everyone!
We have a recently installed Ceph cluster (v 0.94.5, Ubuntu 14.04), and today I noticed a lot of 'attempt to access beyond end of device' messages in the /var/log/syslog file. They are related to a mounted RBD image, and have the following format:Nov 12 21:06:44 ceph-client-01 kernel: [438507.952532] attempt to access beyond end of device
Nov 12 21:06:44 ceph-client-01 kernel: [438507.952534] rbd5: rw=33, want=6193176, limit=4194304
Nov 12 21:06:44 ceph-client-01 kernel: [438507.952534] rbd5: rw=33, want=6193176, limit=4194304
After restarting that Ceph client, I see a lot of 'metadata I/O error' messages in the boot log:
XFS (rbd5): metadata I/O error: block 0x46e001 ("xfs_buf_iodone_callbacks") error 5 numblks 1
Any idea on why these messages are shown? The health of the cluster shows as OK, and I can access that block device without (apparent) issues...
Thank you!
Regards,
Bogdan
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