Re: [Gluster-devel] io recovering after failure

[Mickey Mazarick]

AFR is being handled on the client... I simplified the specs down to 
look exactly like the online example and I'm still seeing the same result.
This is an infiniband setup so that may be the problem. We want to run 
this on a 6 brick 100+ client cluster over infiniband.

Whenever I kill the gluster daemon on RTPST201 it hangs and the client 
log says:
/2007-11-30 07:55:14 E [unify.c:145:unify_buf_cbk] bricks: afrns 
returned 107
2007-11-30 07:55:14 E [unify.c:145:unify_buf_cbk] bricks: afrns returned 107
2007-11-30 07:55:34 E [ib-verbs.c:1100:ib_verbs_send_completion_proc] 
transport/ib-verbs: send work request on `mthca0' returned error 
wc.status = 12, wc.vendor_err = 129, post->buf = 0x2aaaad801000, 
wc.byte_len = 0, post->reused = 210
2007-11-30 07:55:34 E [ib-verbs.c:1100:ib_verbs_send_completion_proc] 
transport/ib-verbs: send work request on `mthca0' returned error 
wc.status = 12, wc.vendor_err = 129, post->buf = 0x2aaaac2bf000, 
wc.byte_len = 0, post->reused = 168
2007-11-30 07:55:34 E [ib-verbs.c:951:ib_verbs_recv_completion_proc] 
transport/ib-verbs: ibv_get_cq_event failed, terminating recv thread
2007-11-30 07:55:34 E [ib-verbs.c:1100:ib_verbs_send_completion_proc] 
transport/ib-verbs: send work request on `mthca0' returned error 
wc.status = 12, wc.vendor_err = 129, post->buf = 0x2aaaabfb9000, 
wc.byte_len = 0, post->reused = 230/


Storage Bricks are:
RTPST201,RTPST202

########################Storage Brick vol spec:
volume afrmirror
 type storage/posix
 option directory /mnt/gluster/afrmirror
end-volume
volume afrns
 type storage/posix
 option directory /mnt/gluster/afrns
end-volume
volume afr
 type storage/posix
 option directory /mnt/gluster/afr
end-volume
volume server
type protocol/server
option transport-type ib-verbs/server # For ib-verbs transport
option ib-verbs-work-request-send-size  131072
option ib-verbs-work-request-send-count 64
option ib-verbs-work-request-recv-size  131072
option ib-verbs-work-request-recv-count 64
 ##auth##
 option auth.ip.afrmirror.allow *
option auth.ip.afrns.allow *
option auth.ip.afr.allow *
option auth.ip.main.allow *
option auth.ip.main-ns.allow *
end-volume

#####################Client spec is:
volume afrvol1
 type protocol/client
 option transport-type ib-verbs/client  
 option remote-host RTPST201
 option remote-subvolume afr
end-volume

volume afrmirror1
 type protocol/client
 option transport-type ib-verbs/client  
 option remote-host RTPST201
 option remote-subvolume afrmirror
end-volume

volume afrvol2
 type protocol/client
 option transport-type ib-verbs/client  
 option remote-host RTPST202
 option remote-subvolume afr
end-volume

volume afrmirror2
 type protocol/client
 option transport-type ib-verbs/client  
 option remote-host RTPST202
 option remote-subvolume afrmirror
end-volume

volume afr1
 type cluster/afr
 subvolumes afrvol1 afrmirror2
end-volume

volume afr2
 type cluster/afr
 subvolumes afrvol2 afrmirror1
end-volume


volume afrns1
 type protocol/client
 option transport-type ib-verbs/client
 option remote-host RTPST201
 option remote-subvolume afrns
end-volume
volume afrns2
 type protocol/client
 option transport-type ib-verbs/client
 option remote-host RTPST202
 option remote-subvolume afrns
end-volume

volume afrns
 type cluster/afr
 subvolumes afrns1 afrns2
end-volume

volume bricks
 type cluster/unify
 option namespace afrns
 subvolumes afr1 afr2
 option scheduler alu   # use the ALU scheduler
 option alu.order open-files-usage:disk-usage:read-usage:write-usage
end-volume


Krishna Srinivas wrote:
> If you have the AFR on the server side, and if this server goes down then
> all the FDs associated with the files on this server will return ENOTCONN
> error. (If that is how your setup is? ) But if you had AFR on the client
> side it would have worked seamlessly. However this situation will be
> handled when we bring out the HA translator
>
> Krishna
>
> On Nov 30, 2007 3:01 AM, Mickey Mazarick <address@hidden> wrote:
>   
> > Is this true for files that are currently open? For example I have a
> > virtual machine running that had a file open at all times. Errors are
> > bubbling back to the application layer instead of just waiting. After
> > that I have to unmount/remount the gluster vol. Is there a way of
> > preventing this?
> >
> > (This is the latest tla btw)
> > Thanks!
> >
> >
> > Anand Avati wrote:
> >     
> > > This is possible already, just that the files from the node which are
> > > down will not be accessible for the time the server is down. When the
> > > server is brought back up, the files are made accessible again.
> > >
> > > avati
> > >
> > > 2007/11/30, Mickey Mazarick <address@hidden
> > > <mailto:address@hidden>>:
> > >
> > >     Is there currently a way to force a client connection to retry dist io
> > >     until a failed resource comes back online?
> > >     if a disk in a unified volume drops I have to remount on all the
> > >     clients. Is there a way around this?
> > >
> > >     I'm using afr/unify on 6 storage bricks and I want to be able to
> > >     change
> > >     a server config setting and restart the server bricks one at a time
> > >     without losing the mount point on the clients. Is this currently
> > >     possible without doing ip failover?
> > >     --
> > >     _______________________________________________
> > >     Gluster-devel mailing list
> > >     address@hidden <mailto:address@hidden>
> > >       
> > >     http://lists.nongnu.org/mailman/listinfo/gluster-devel
> > >
> > >
> > >
> > >
> > > --
> > > It always takes longer than you expect, even when you take into
> > > account Hofstadter's Law.
> > >
> > > -- Hofstadter's Law
> > >       
> > --
> >
> > _______________________________________________
> > Gluster-devel mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/gluster-devel
> >
> >     


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