-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Is there a way through the admin socket or inject args that can tell the OSD process to dump the in memory logs without crashing? Do you have an idea of the overhead? From the code it looks like it is always evaluated, just depends on if it is stored in memory or dumped to disk. I'm trying to figure out an issue with dout() right now in the code I'm working on (invalid use of static member) and I'm trying to understand how it works. - ---------------- Robert LeBlanc PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 On Mon, Nov 23, 2015 at 12:12 PM, Sage Weil wrote: > On Mon, 23 Nov 2015, Robert LeBlanc wrote: >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA256 >> >> We set the debugging to 0/0, but are you talking about lines like: >> >> -12> 2015-11-20 20:59:47.138746 7f70067de700 -1 osd.177 103793 >> heartbeat_check: no reply from osd.133 since back 2015-11-20 >> 20:57:32.413156 front 2015-11-20 20:57:32.413156 (cutoff 2015-11-20 >> 20:59:27.138720) >> -11> 2015-11-20 20:59:47.138749 7f70067de700 -1 osd.177 103793 >> heartbeat_check: no reply from osd.136 since back 2015-11-20 >> 20:57:32.413156 front 2015-11-20 20:57:32.413156 (cutoff 2015-11-20 >> 20:59:27.138720) >> -10> 2015-11-20 20:59:47.138751 7f70067de700 -1 osd.177 103793 >> heartbeat_check: no reply from osd.139 since back 2015-11-20 >> 20:57:32.413156 front 2015-11-20 20:57:32.413156 (cutoff 2015-11-20 >> 20:59:27.138720) >> -9> 2015-11-20 20:59:47.138758 7f70067de700 -1 osd.177 103793 >> heartbeat_check: no reply from osd.147 since back 2015-11-20 >> 20:57:32.413156 front 2015-11-20 20:57:32.413156 (cutoff 2015-11-20 >> 20:59:27.138720) >> -8> 2015-11-20 20:59:47.138761 7f70067de700 -1 osd.177 103793 >> heartbeat_check: no reply from osd.159 since back 2015-11-20 >> 20:58:51.427880 front 2015-11-20 20:58:51.427880 (cutoff 2015-11-20 >> 20:59:27.138720) >> -7> 2015-11-20 20:59:47.138789 7f70067de700 -1 osd.177 103793 >> heartbeat_check: no reply from osd.170 since back 2015-11-20 >> 20:57:32.413156 front 2015-11-20 20:57:32.413156 (cutoff 2015-11-20 >> 20:59:27.138720) >> -6> 2015-11-20 20:59:47.138794 7f70067de700 -1 osd.177 103793 >> heartbeat_check: no reply from osd.175 since back 2015-11-20 >> 20:57:32.413156 front 2015-11-20 20:57:32.413156 (cutoff 2015-11-20 >> 20:59:27.138720) >> >> There are 10,000 of those lines in the OSD log which shows all the >> logs up to the crash. Unless setting the value to 0/0 is eliminating >> what you are looking for. I've been wondering if setting it to 0/1 or >> 0/5 or even 0/20 has any runtime performance penalty? It seems like >> more detailed info on crashes would be helpful, but we don't want to >> write too much to the SATADOMs. > > There is a performance impact but no disk IO (logs are accumulated in > memory and only flushed out on a crash). > > sage -----BEGIN PGP SIGNATURE----- Version: Mailvelope v1.2.3 Comment: https://www.mailvelope.com wsFcBAEBCAAQBQJWU2kWCRDmVDuy+mK58QAAIgUQALpFu8+tdK3+oEktPy5t J8JTqp/XBRBeb80nvQTBi4ePt5T6O0mDTtbiGE7mcHjNR4Nh/a30CQmWeO// yRZ3fX+iv4Q2yAzhOArTnYhGPHVwo0mWPNHmvCAlkeLqZ8KAmYzNOaHSU+C0 aJKe7krtaGC/bJC5nYqp/uQza9++3OL9acI8ZnqbfdXAFDRrXIdyjfdg26+h XJe27ietL83ZyOmtYq0NUaFyrxR14x0prvJhZpqLKuufvKoqGSd/DO6/+mZx 3Gr+w9erhBKdd5Wed454pIWw5AGvoqmIJySfcnqvbdS2M9DhDG4Cl+3Hdu/X 5RQiX//zS4Wq2ego2qISjt00X3ul+4RKOUlfKApQ1ATsLOKR6OWYlgwcSRo9 UWtU5A8cSKctqE+w1ltHW7dQ7D7vxuTxgHmMQi5j76MVvWzg9Rdw0V/IJOvk vn9CWxpkXKcZIEadaEMx6hHfflW01Z3/6DUq8qpXpJtdbLGyzZcqCzqOEc4R /o96otd14AXLdjokg8HNJ8FLa9hSd1vLCosm0bRRPLpN9JP5qyOGjeSkemaO 7MjwIubog5eOStsMuIhfsFOsUMttpWyL+BQmAh5YwObkepJl7w0u2IhBV3OB f+jglWvwHdTPnSQ236gI+KdFTBv+jkoazyvmqviYuCQRM5RKiqQB7e5a5Wsc va31 =h1p4 -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
