Simone; What is your failure domain? If you don't know your failure domain can you provide the CRUSH ruleset for the pool that experienced the "object unfound" error? Thank you, Dominic L. Hilsbos, MBA Director - Information Technology Perform Air International Inc. DHilsbos@xxxxxxxxxxxxxx www.PerformAir.com -----Original Message----- From: Simone Lazzaris [mailto:simone.lazzaris@xxxxxxx] Sent: Thursday, March 05, 2020 6:11 AM To: ceph-users; Chad William Seys Subject: Re: How can I fix "object unfound" error? In data mercoledì 4 marzo 2020 18:14:31 CET, Chad William Seys ha scritto: > > Maybe.... I've marked the object as "lost" and removed the failed > > OSD. > > > > The cluster now is healthy, but I'd like to understand if it's likely > > to bother me again in the future. > > Yeah, I don't know. > > Within the last month there are 4 separate instances of people > mentioning "unfound" object in their cluster. > > I'm deferring as long as possible any OSD drive upgrades. I ran into > the problem when "draining" an OSD. > > "draining" means remove OSD from crush map, wait for all PG to be stored > elsewhere, then replace drive with larger one. Under those > circumstances there should be no PG unfound. > > BTW, are you using cache tiering ? The bug report mentions this, but > some people did not have this enabled. > > Chad. No, I don't have cache tiering enabled. I also found strange that the PG was marked unfound: the cluster was perfectly healthy before the kernel panic and a single OSD failure shouldn't create mush hassle. *Simone Lazzaris* *Qcom S.p.A. a Socio Unico* Via Roggia Vignola, 9 | 24047 Treviglio (BG)T +39 0363 1970352 | M +39 3938111237 simone.lazzaris@xxxxxxx[1] | www.qcom.it[2] * LinkedIn[3]* | *Facebook*[4] [5] -------- [1] mailto:simone.lazzaris@xxxxxxx [2] https://www.qcom.it [3] https://www.linkedin.com/company/qcom-spa [4] http://www.facebook.com/qcomspa [5] https://www.qcom.it/includes/NUOVAemail-banner.gif _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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