On Thu, 4 Feb 2016 21:33:10 -0700 Robert LeBlanc wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > On Thu, Feb 4, 2016 at 8:32 PM, Christian Balzer wrote: > > On Wed, 3 Feb 2016 22:42:32 -0700 Robert LeBlanc wrote: > > > I just finished downgrading my test cluster from testing to Jessie and > > then upgrading Ceph from Firefly to Hammer (that was fun few hours). > > > > And I can confirm that I don't see that issue with Hammer, wonder if > > it's worth prodding the devs about. > > I sorta dread the time the PG upgrade process will take when going to > > Hammer on the overloaded production server. > > But then again, a fix for Firefly is both unlikely and going to take > > too long for my case anyway. > > There isn't any PG upgrading as part of the Firefly to Hammer process > that I can think of. If there is, it wasn't long. Setting noout would > prevent backfilling so only recovery of delta changes would be needed. > You don't have to reboot the node, just restart the process so it can > limit the amount of changes to only a minute or two. It's been a long > time since I did that upgrade that I just may be plain forgetting > something. > There is, it wasn't particular long on my test cluster, but that one is tiny compared to the production one and also was under no I/O load during the restart: --- 2016-02-05 11:51:19.763477 7fa3654cb900 -1 filestore(/var/lib/ceph/osd/ceph-20) FileStore::mount : stale version stamp detected: 3. Proceeding, do_update is set, performing disk format upgrade. 2016-02-05 11:51:20.057585 7fa3654cb900 1 filestore upgrade_to_v2 start 2016-02-05 11:51:20.097837 7fa3654cb900 1 filestore upgrade_to_v2 done 2016-02-05 11:51:21.710174 7fa3654cb900 -1 osd.20 9953 PGs are upgrading --- In total that initial Hammer OSD startup was about twice as long that with Firefly before and consecutive Hammer restarts, though in this case that means just 2-3 seconds more. Guess there's no avoiding that bullet. Christian > I think you are right about the fix not going into Firefly since it > will EoL this year. Glad to know that it is fixed in Hammer. > > - ---------------- > Robert LeBlanc > PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 > -----BEGIN PGP SIGNATURE----- > Version: Mailvelope v1.3.4 > Comment: https://www.mailvelope.com > > wsFcBAEBCAAQBQJWtCYCCRDmVDuy+mK58QAAvDEP/i85/cjKQwi4idRzLT9e > 7oecZ2kTldVNLILLsGhmbg+oABgyKQ7uNY+XTJXSlYMYIKGpoQ9cDO/r9tB3 > nANDVxvVF6yxiA4Pzo8ybytu+qKyOeB17ri3//ReFyyPg+tDJsNpXV+ECUFX > LZPekvhV397JFS8KoT00nkzGGiWh1PlbQCYqZCNCbsrhIqwCjFq+k5ydKpvv > qJfTh1d3V0h0vgtbtdC4Vdrzvqr65BoLHNcy6cOlIzPHhkJi6W5rABB6Haec > sn7onFqsdJn9TSEJ8TSHfgtaWR5vT7y6/AQHHDafXzdr/VZKorwemdeiRwuX > LEWudwg+J3cf4DrhVlDjv91I24f78/fH4Bm8m/sugo98L/+UqNgCz9VXI4AP > ejRkZyIkWacEjkrBw8D7QttEEwo58247gYrimb07+MMVX36p+0S7pkpsdH1Y > 3d3eOuHqqs3mG51eFlZng8Iax029NPQ7Umdt7l/Eru7g7pthJtPEmvPwMMB1 > dcx+X2Aj6G9F+Jsa3hJNTPDsr3cKLOGcS9uu7iQjXVpMfhlF5v/16XCoDKfa > ZSGc6cEdEKLSfEIe7msD3n2gRLL4QfbXFSf7bJUi9dm6LRLMCBEks4QiakAm > t0AFeV96xsubg5uplBfkIROND3qU80ccSI5mhey8OC42zHKFj3B/Rf5v+qDF > X3T3 > =2CEJ > -----END PGP SIGNATURE----- > -- Christian Balzer Network/Systems Engineer chibi@xxxxxxx Global OnLine Japan/Rakuten Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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