-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 If you decide to use swap, be warned that significant parts of the OSD code can be swapped out even without memory pressure. This has caused OSD processes to take 5 minutes to shut down in my experience. I would recommend tuning swappiness in this case. My strongest recommendation is not to have swap if it is a pure OSD node. - ---------------- Robert LeBlanc PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 On Fri, Sep 18, 2015 at 8:15 PM, 张冬卯 wrote: > yes, a raid1 system disk is necessary, from my perspective. > > And a swap partition is still needed even though the memory is big. > Martin Palma 于 2015年9月18日，下午11:07写道： Hi, > > Is it a good idea to use a software raid for the system disk (Operating > System) on a Ceph storage node? I mean only for the OS not for the OSD > disks. > > And what about a swap partition? Is that needed? > > Best, > Martin > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > -----BEGIN PGP SIGNATURE----- Version: Mailvelope v1.1.0 Comment: https://www.mailvelope.com wsFcBAEBCAAQBQJV/OEjCRDmVDuy+mK58QAAzWMQAI/sVjPQP+sJPPAl/7lq r75SccEO5i7rGZuTrrDn6kl1p2Nackb9o0PKh0tnyOSgouO2Jj3IOvqlnv/S t40SxkoDoaG2//JmBHZs2BtOUWQCBh4R9h5UjwROXvByKBCNzzH+tsrJ4cST 7HdVNB3Cjg/kcxC7kB88OOF1Kl8mrPSsbb9kG1RSlqqCFh82pZ3GJjDpNP30 mCQHMcTWwlYoAx+5Lii0cCks5Csc78BAv7gFtv47NAvXyRT5LPN8ZvXYv71N Bm5pqkIC5H38nVrTb9UCyrVdFmL7M9FeaEaJ+CvNOZFYVgjrAUWNw0LGAgey yAH9q8GHEJAmvtZLWebCXMucLmNM6LUDySuxgN2sx8upNFg57Zwz8zLFmitp mvp8YdWS+blSk8gyMWFMLUbtIPu6QepzYGpY5lKy6HJI4pqzd5g8HK9gIjjO 0EY330T7KE03HjQS4Nuj3xmSWeY5lOQ1sSMANBACXLtDpgTQ8/rQpni9DQBP VHyk0t3DWwE83MbF6T8o1h+vS06BIeVc4mOehAxvmsSMITmORejJmLQtu3sS bUEWDZS7KcVPj0/FIqGJbf4d7CIYKfDouNUb1J2aXjz9YwK9CbfFZzHbGIfT gKsgbL8wHsHNIjOlQVbvSgJ+CjRz6H7xO3hHVUrYL4pXLjSt+VJodfB7azlk 8Dq9 =ny7s -----END PGP SIGNATURE----- _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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