Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi Lars, Thanks for your message! The IO is not blocked. It is in fact working properly. I just noticed the flag and was trying to find out what that means, and how to fix it. Thanks, --Marcelo On Tue, Feb 5, 2013 at 3:53 AM, Lars Ellenberg <lars.ellenberg at linbit.com>wrote: > On Mon, Feb 04, 2013 at 05:44:48PM -0500, Marcelo Pereira wrote: > > Hello Everyone, > > > > I just noticed a flag on one of the DRBD resources, as shown below: > > > > > [ /]# cat /proc/drbd > > > version: 8.3.13 (api:88/proto:86-96) > > > GIT-hash: 83ca112086600faacab2f157bc5a9324f7bd7f77 build by > dag at Build64R6, > > > 2012-05-07 11:52:13 > > > 0: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r----- > > > ns:2081916088 nr:520248 dw:2082436336 dr:1001913178 al:1585314 > bm:132 lo:0 > > > pe:0 ua:0 ap:0 ep:1 wo:b oos:0 > > > 1: cs:Connected ro:Primary/Secondary ds:UpToDate/UpToDate C r---d- > > > ns:1035652 nr:0 dw:1035652 dr:7682 al:270 bm:0 lo:0 pe:0 ua:0 ap:0 > ep:1 > > > wo:b oos:0 > > > > The DRBD manual says about the "d" on the 5th flag: > > > > > Locally blocked I/O. Normally. May be one of the following flags: > > > > > > d: I/O blocked for a reason internal to DRBD, such as a transient > disk > > > state. > > Is IO in fact blocked? > Or are you just worrying about that flag in /proc/drbd ? > > We cache the result of our drbd_congested() hook whenever it is called > by the VM subsystem or generic writeout path, or the like. > We used to not reset that information actively. > So it reset only when "someone" called into that hook again later. > > This means that flag may display stale information /proc/drbd. > Fixed in 8.3.14 and above. > > Lars > > > I have checked the logs (/var/log/messages), and there is nothing there > from > > DRBD. > > > > There server is running on: > > * CentOS 6.3 > > * Kernel 2.6.32-220 > > Any suggestion on how to find out what is causing that flag to be up? > > > > Thanks, > > > -- > : Lars Ellenberg > : LINBIT | Your Way to High Availability > : DRBD/HA support and consulting http://www.linbit.com > > DRBD® and LINBIT® are registered trademarks of LINBIT, Austria. > __ > please don't Cc me, but send to list -- I'm subscribed > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20130205/085a58f1/attachment.htm>