On 12/10/2012 01:54 PM, Vladislav Gorbunov wrote:
but access to iscsi/seodo1 and iscsi/siri1 fail on every rbd client
hosts. Data completely inaccessible.
root@bender:~# rbd info iscsi/seodo1
*** Caught signal (Segmentation fault) **
in thread 7fb8c93f5780
ceph version 0.48.2argonaut (commit:3e02b2fad88c2a95d9c0c86878f10d1beb780bfe)
1: rbd() [0x41dfea]
2: (()+0xfcb0) [0x7fb8c796fcb0]
3: (()+0x16244d) [0x7fb8c6ae444d]
4: (librbd::read_header_bl(librados::IoCtx&, std::string const&,
ceph::buffer::list&, unsigned long*)+0xf9) [0x7fb8c8fadb99]
5: (librbd::read_header(librados::IoCtx&, std::string const&,
rbd_obj_header_ondisk*, unsigned long*)+0x82) [0x7fb8c8fadda2]
6: (librbd::ictx_refresh(librbd::ImageCtx*)+0x90b) [0x7fb8c8fb05eb]
7: (librbd::open_image(librbd::ImageCtx*)+0x1b5) [0x7fb8c8fb1165]
8: (librbd::RBD::open(librados::IoCtx&, librbd::Image&, char const*,
char const*)+0x5f) [0x7fb8c8fb16af]
9: (main()+0x73c) [0x41721c]
10: (__libc_start_main()+0xed) [0x7fb8c69a376d]
11: rbd() [0x41a0c9]
2012-12-11 09:33:14.264755 7fb8c93f5780 -1 *** Caught signal
(Segmentation fault) **
in thread 7fb8c93f5780
It sounds like the header object (which rbd uses to determine the
prefix for data object names) is corrupted or otherwise inaccessible.
Could you save the header object to a file ('rados -p iscsi get
seodo1.rbd') and put that file somewhere accessible?
Did anything happen to your cluster before this header became
unreadable? Any disk problems, or osds crashing?
Josh
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