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From: M Ranga Swami Reddy <swamireddy-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: ceph-users <ceph-users-idqoXFIVOFJgJs9I8MT0rw@public.gmane.org>,
	ceph-devel <ceph-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Ceph cluster stability
Date: Tue, 12 Feb 2019 15:31:02 +0530	[thread overview]
Message-ID: <CANA9Uk5YZYbq5EN40PX5vo55wPzjYLU+Oy9m8Hm-DRG-f1zxFw@mail.gmail.com> (raw)

Hello - I have a couple of questions on ceph cluster stability, even
we follow all recommendations as below:
- Having separate replication n/w and data n/w
- RACK is the failure domain
- Using SSDs for journals (1:4ratio)

Q1 - If one OSD down, cluster IO down drastically and customer Apps impacted.
Q2 - what is stability ratio, like with above, is ceph cluster
workable condition, if one osd down or one node down,etc.

Thanks
Swami

             reply	other threads:[~2019-02-12 10:01 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-12 10:01 M Ranga Swami Reddy [this message]
     [not found] ` <CANA9Uk5YZYbq5EN40PX5vo55wPzjYLU+Oy9m8Hm-DRG-f1zxFw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-19 17:26   ` Ceph cluster stability David Turner
2019-02-20 14:27     ` M Ranga Swami Reddy
     [not found]       ` <CANA9Uk5_FfQqEbZ7O3xp4PPy=cSYUwSf-xWVM6+5WnQO6YkqmQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-20 15:47         ` Darius Kasparavičius
     [not found]           ` <CANrNMwUVupc80VWW_OKbYnH1JzB9fKRJFB7q7wVgJH9MY8fB6w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-20 15:55             ` Alexandru Cucu
     [not found]               ` <CAHrLTFnMc3Jep4P8WwdR-8J+qNeWhXHtgba4E88V=NBx99YJqw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-22 10:23                 ` M Ranga Swami Reddy
2019-02-22 10:58             ` M Ranga Swami Reddy
     [not found]               ` <CANA9Uk5+D1GU55Goc0+TEjfYhtS8wQ0XRC-3QrSqBpEXPR9Z-g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-22 11:59                 ` Janne Johansson
     [not found]                   ` <CAA6-MF9ki_eHY=ZHwreHJ1KpB1iFrJd-+k7CeaOtTdTMBmD=DA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-22 12:14                     ` M Ranga Swami Reddy
2019-02-22 11:01             ` M Ranga Swami Reddy
     [not found]               ` <CANA9Uk5p7so6BYrR+BMhN-qQv3BFnqJwW7cpNA-Xpqtu3mQFhg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-22 11:10                 ` David Turner
     [not found]                   ` <CAN-GepJDYqs931SwNvevPPYLUnAcqWPc3oQUDLDeBVFVrWHZEw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-22 11:39                     ` M Ranga Swami Reddy
     [not found]                       ` <CANA9Uk4_Ynn8+3BDWDiy5Pshv2u_cp90a=vGWwUxrJXS+Q-STQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-22 11:43                         ` David Turner
     [not found]                           ` <CAN-Gep+wy9axKNL26RUpCKy3S2uTxzOrSXq+bf=+zhsrGxAvCQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-22 11:50                             ` M Ranga Swami Reddy
     [not found]                               ` <CANA9Uk6rHoAtvAUGtW1VqZnXDz6EjaFOUfxmYUocChRe5mZwDw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-22 11:55                                 ` Darius Kasparavičius
     [not found]                                   ` <CANrNMwUuODV3Ju+TxosZE0hM9qwAU1Rk0efST6QmzmWXW+hXFA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-22 12:14                                     ` M Ranga Swami Reddy
     [not found]                                       ` <CANA9Uk6CFJnGXz-Bcwe7Cb9JMBFGw5rwd3xgFvyo9teCWoUcCQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-23  1:01                                         ` Anthony D'Atri
     [not found]                                           ` <7B24D99C-9F31-401F-9455-8F7B0E013160-lmG3kWHAawoohuQDye/k0w@public.gmane.org>
2019-02-25  9:33                                             ` M Ranga Swami Reddy
     [not found]                                               ` <CANA9Uk7=gbKEpzrN7XAe71FD5M7Y+MgUi=FM1qNDc0Y_s6E6gA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2019-02-25 11:23                                                 ` Darius Kasparavičius

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