* [Drbd-dev] 0.7.1 release...
@ 2004-07-27 8:28 Philipp Reisner
2004-07-27 13:05 ` Lars Ellenberg
0 siblings, 1 reply; 3+ messages in thread
From: Philipp Reisner @ 2004-07-27 8:28 UTC (permalink / raw)
To: drbd-dev
Hi,
Ich habe vor gegen ende der Woche 0.7.1 zu taggen.
* Damit XFS nun wirklich mit DRBD stable funktioniert
* Damit ein upgrade Guide 0.6.x -> 0.7.x enthalten ist
sonstige TODOs (soweit ich das bis jetzt sehe):
* Increment the primary-count if someone types in "yes" at the user's
dialog
* Make sure the timeout-count is increased if the timeout is expired
at the user's dialog
* Make the ":sendpage fallback/total: %lu/%lu\n" more aggressive towards
XFS. "drbd0: XFS's erronous IO requests detected. Workaround engaged."
* Some fix to Martin Bene's "Child process does not terminate!" issue in
drbdadm.
LGE:
* Hast du noch irgendwelche Dinge die in 0.7.1 rein sollten ?
-Philipp
--
: Dipl-Ing Philipp Reisner Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH Fax +43-1-8178292-82 :
: Schönbrunnerstr 244, 1120 Vienna, Austria http://www.linbit.com :
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Drbd-dev] 0.7.1 release...
2004-07-27 8:28 [Drbd-dev] 0.7.1 release Philipp Reisner
@ 2004-07-27 13:05 ` Lars Ellenberg
2004-07-27 14:52 ` Philipp Reisner
0 siblings, 1 reply; 3+ messages in thread
From: Lars Ellenberg @ 2004-07-27 13:05 UTC (permalink / raw)
To: drbd-dev
/ 2004-07-27 10:28:23 +0200
\ Philipp Reisner:
> Hi,
>
> Ich habe vor gegen ende der Woche 0.7.1 zu taggen.
> * Damit XFS nun wirklich mit DRBD stable funktioniert
> * Damit ein upgrade Guide 0.6.x -> 0.7.x enthalten ist
>
> sonstige TODOs (soweit ich das bis jetzt sehe):
* agree on the sprache die hier gespoken wird :-)
>
> * Increment the primary-count if someone types in "yes" at the user's
> dialog
the "human" count? or which one?
--> why? it is not primary yet...
hm.
maybe set some "mdf_inc_human_if_we_go_primary_while_unconnected",
and ... you get the idea ...
but this seems to be a litlle hackish.
> * Make sure the timeout-count is increased if the timeout is expired
> at the user's dialog
yes. but still, actually it only needs to increase these,
when we go primary.
so set here a flag "mdf_inc_timeout_cnt_if_we_go_primary_while_unconnected"
be sure that nothing ugly can happen when
both go down. come back again, but link is broken.
both timeout / admin says yes to one of them.
one of the nodes is 0.7.0 ...
eventually they connect... now they should still do the right thing.
> * Make the ":sendpage fallback/total: %lu/%lu\n" more aggressive towards
> XFS. "drbd0: XFS's erronous IO requests detected. Workaround engaged."
and display that with every statistic report ...
and increase that from INFO to WARN ...
no problem with that one,
the more people point at xfs, the more likely it is fixed sooner :)
> * Some fix to Martin Bene's "Child process does not terminate!" issue in
> drbdadm.
yes...
it does not need to be a fixed time.
how do we want to guesstimate the time we want to wait?
maybe we want to introduce a "write in one go, then sync and wait"
for "bm_write_all" instead of foreach(bm_block) { write;sync;wait; } ?
( needs to alloc extra pages and bios, put them on some list,
write them all out, wait for all of them ... )
maybe we want to suspend _all_ devices while one device is writing its bitmap?
> LGE:
> * Hast du noch irgendwelche Dinge die in 0.7.1 rein sollten ?
derzeit nur ein paar ideen, kein code.
== VALID_POINTER ==
paranoia:
evtl. noch ein __range_ok(pointer,sizeof(whatever))
mit in das macro einbauen...
== benchmark ==
was ist mit deinem "benchmark"?
willst du den rauswerfen, oder auf 0.7 updaten?
soll ich das in ein cth script umwandeln?
an alle: es wäre sicher nett, einen generischen benchmark zu haben.
was wäre sinnvoll zu sammeln?
nodeinfo:
/proc/cpuinfo (komplett?)
uname -a
lsmod ?
lspci ?
networkinfo:
ping?
bing?
??
io-info:
hdparm ?
tiobench?
philipps "dm.c"?
mein "wbtest.c"?
ohne, unconnected, connected, on synctarget, on syncsource,
protocol A,B,C ?
Lars
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Drbd-dev] 0.7.1 release...
2004-07-27 13:05 ` Lars Ellenberg
@ 2004-07-27 14:52 ` Philipp Reisner
0 siblings, 0 replies; 3+ messages in thread
From: Philipp Reisner @ 2004-07-27 14:52 UTC (permalink / raw)
To: drbd-dev
On Tuesday 27 July 2004 15:05, Lars Ellenberg wrote:
> / 2004-07-27 10:28:23 +0200
>
> \ Philipp Reisner:
> > Hi,
> >
> > Ich habe vor gegen ende der Woche 0.7.1 zu taggen.
> > * Damit XFS nun wirklich mit DRBD stable funktioniert
> > * Damit ein upgrade Guide 0.6.x -> 0.7.x enthalten ist
> >
> > sonstige TODOs (soweit ich das bis jetzt sehe):
>
> * agree on the sprache die hier gespoken wird :-)
>
:) Ok, I bin for Englisch. Although all auf the list deutschsprachig sind.
> > * Increment the primary-count if someone types in "yes" at the user's
> > dialog
>
> the "human" count? or which one?
Oh, right, the human count of course.
> --> why? it is not primary yet...
> hm.
> maybe set some "mdf_inc_human_if_we_go_primary_while_unconnected",
> and ... you get the idea ...
> but this seems to be a litlle hackish.
>
> > * Make sure the timeout-count is increased if the timeout is expired
> > at the user's dialog
>
> yes. but still, actually it only needs to increase these,
> when we go primary.
> so set here a flag "mdf_inc_timeout_cnt_if_we_go_primary_while_unconnected"
>
> be sure that nothing ugly can happen when
> both go down. come back again, but link is broken.
> both timeout / admin says yes to one of them.
> one of the nodes is 0.7.0 ...
> eventually they connect... now they should still do the right thing.
My initial idea was that drbdadm should simply do a
drbdsetup /dev/nbX primary --human | --timeout-expired
drbdsetup /dev/nbX secondary
The better implementation would be ( I guess this is what you mean)
drbdsteup /dev/nbX on_primary --increase-human
drbdsteup /dev/nbX on_primary --increase-timeout-expired
... I will go that way...
> > * Make the ":sendpage fallback/total: %lu/%lu\n" more aggressive towards
> > XFS. "drbd0: XFS's erronous IO requests detected. Workaround engaged."
>
> and display that with every statistic report ...
> and increase that from INFO to WARN ...
> no problem with that one,
> the more people point at xfs, the more likely it is fixed sooner :)
>
Right.
>
> derzeit nur ein paar ideen, kein code.
>
> == VALID_POINTER ==
>
> paranoia:
> evtl. noch ein __range_ok(pointer,sizeof(whatever))
> mit in das macro einbauen...
>
> == benchmark ==
>
> was ist mit deinem "benchmark"?
> willst du den rauswerfen, oder auf 0.7 updaten?
> soll ich das in ein cth script umwandeln?
>
> an alle: es wäre sicher nett, einen generischen benchmark zu haben.
> was wäre sinnvoll zu sammeln?
> nodeinfo:
> /proc/cpuinfo (komplett?)
> uname -a
> lsmod ?
> lspci ?
> networkinfo:
> ping?
> bing?
> ??
> io-info:
> hdparm ?
> tiobench?
> philipps "dm.c"?
> mein "wbtest.c"?
> ohne, unconnected, connected, on synctarget, on syncsource,
> protocol A,B,C ?
Yes, a benchmark would be great. My old dm.c is very primitiv.
Its purpose is to show the difference between the performance
of the backing_device and the performance of DRBD on top of the
backing_device. --- And it measures a complete linear pattern
-> It does not meassure the latency of the disks, it measures
DRBD's overhead.
-Philipp
--
: Dipl-Ing Philipp Reisner Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH Fax +43-1-8178292-82 :
: Schönbrunnerstr 244, 1120 Vienna, Austria http://www.linbit.com :
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2004-07-27 8:28 [Drbd-dev] 0.7.1 release Philipp Reisner
2004-07-27 13:05 ` Lars Ellenberg
2004-07-27 14:52 ` Philipp Reisner
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