On Mon, Jan 5, 2009 at 4:29 PM, Brent Jones <br...@servuhome.net> wrote: > On Mon, Jan 5, 2009 at 2:50 PM, Richard Elling <richard.ell...@sun.com> wrote: >> Correlation question below... >> >> Brent Jones wrote: >>> >>> On Sun, Jan 4, 2009 at 11:33 PM, Carsten Aulbert >>> <carsten.aulb...@aei.mpg.de> wrote: >>> >>>> >>>> Hi Brent, >>>> >>>> Brent Jones wrote: >>>> >>>>> >>>>> I am using 2008.11 with the Timeslider automatic snapshots, and using >>>>> it to automatically send snapshots to a remote host every 15 minutes. >>>>> Both sides are X4540's, with the remote filesystem mounted read-only >>>>> as I read earlier that would cause problems. >>>>> The snapshots send fine for several days, I accumulate many snapshots >>>>> at regular intervals, and they are sent without any problems. >>>>> Then I will get the dreaded: >>>>> " >>>>> cannot receive incremental stream: most recent snapshot of pdxfilu02 >>>>> does not match incremental source >>>>> " >>>>> >>>>> >>>> >>>> Which command line are you using? >>>> >>>> Maybe you need to do a rollback first (zfs receive -F)? >>>> >>>> Cheers >>>> >>>> Carsten >>>> _______________________________________________ >>>> zfs-discuss mailing list >>>> zfs-discuss@opensolaris.org >>>> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss >>>> >>>> >>> >>> I am using a command similar to this: >>> >>> zfs send -i pdxfilu01/arch...@zfs-auto-snap:frequent-2009-01-04-03:30 >>> pdxfilu01/arch...@zfs-auto-snap:frequent-2009-01-04-03:45 | ssh -c >>> blowfish u...@host.com /sbin/zfs recv -d pdxfilu02 >>> >>> It normally works, then after some time it will stop. It is still >>> doing a full snapshot replication at this time (very slowly it seems, >>> I'm bit by the bug of slow zfs send/resv) >>> >>> Once I get back on my regular snapshotting, if it comes out of sync >>> again, I'll try doing a -F rollback and see if that helps. >>> >> >> When this gets slow, are the other snapshot-related commands also >> slow? For example, normally I see "zfs list -t snapshot" completing >> in a few seconds, but sometimes it takes minutes? >> -- richard >> >> > > I'm not seeing zfs related commands any slower. On the remote side, it > builds up thousands of snapshots, and aside from SSH scrolling as fast > as it can over the network, no other slowness. > But the actual send and receive is getting very very slow, almost to > the point of needing the scrap the project and find some other way to > ship data around! > > -- > Brent Jones > br...@servuhome.net >
Got a small update on the ZFS send, I am in fact seeing ZFS list taking several minutes to complete. I must have timed it correctly during the send, and both sides are not completing the ZFS list, and its been about 5 minutes already. There is a small amount of network traffic between the two hosts, so maybe it's comparing what needs to be sent, not sure. I'll update when/if it completes. -- Brent Jones br...@servuhome.net _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
