Bug #50888: cannot map RBD image - getting libceph: bad crc signature - rbd - Ceph

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Bug #50888

closed

cannot map RBD image - getting libceph: bad crc signature

Added by Denis Polom almost 3 years ago. Updated over 2 years ago.

Status:

Resolved

Priority:

Normal

Assignee:

Ilya Dryomov

Target version:

Ceph - v14.2.21

% Done:

Source:

Community (user)

Tags:

Backport:

Regression:

Severity:

3 - minor

Reviewed:

Affected Versions:

ceph-qa-suite:

rbd

Pull request ID:

Crash signature (v1):

Crash signature (v2):

Description

Mapping RBD image on Ceph version Nautilus hangs. I can't see any error message in debug OSD logs, just in the kernel log anytime I'm trying to map RBD:

[  +0.001046] libceph: read_partial_message 000000006aa955f0 signature check failed
[  +0.000091] libceph: osd5 (1)10.1.115.11:6805 bad crc/signature

ceph version 14.2.21 (5ef401921d7a88aea18ec7558f7f9374ebd8f5a6) nautilus (stable)

kernel 5.4.0-73-generic

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Updated by Denis Polom almost 3 years ago

solved by using nocrc option

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Updated by Neha Ojha almost 3 years ago

Project changed from Ceph to rbd
Category deleted (~~OSD~~)

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Updated by Ilya Dryomov over 2 years ago

Did you disable data crcs on the server side? If so, then yes -- "nocrc" needs to be passed on the client side.

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Updated by Ilya Dryomov over 2 years ago

It seems that it was failing the message signature check, not the data crc check (although in msgr1 the message signature is derived from crcs). Do you have any unconventional settings applied on the server side, particularly in the messenger and authentication/cephx areas?

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