Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Thanks, Lars!
Yes, we are working the montavista issue. Believe me; I personally would like nothing better than to see them support the latest 8.0. (Dare I hope they would support 8.3? No, I dare not...)
I will move to external meta data for now to solve the over-write problem.
Regards,
-k
> -----Original Message-----
> From: drbd-user-bounces at lists.linbit.com [mailto:drbd-user-
> bounces at lists.linbit.com] On Behalf Of Lars Ellenberg
> Sent: Tuesday, March 10, 2009 4:51 AM
> To: drbd-user at lists.linbit.com
> Subject: Re: [DRBD-user] "attempt to access beyond end of device", but w/
> lots of available space....
>
> On Mon, Mar 09, 2009 at 04:17:18PM -0400, Little, Kevin wrote:
> > Hi, all.
> >
> > I'm using 8.0.3 DRBD on a PPC platform, MontaVista 2.6.21_mvlcge500 base
> (ppc64).
>
> don't.
> get montavista to finally acknowledge that drbd 8.0.3 is broken,
> and that they
> NEED. TO. UPGRADE.
> AT. LEAST. TO. LATEST. 8.0.
> NOW.
>
> this has been discussed on the list a few times,
> and even in private mail with some of the montavista folk.
> but they apparently are either overstrained
> or completely resistent to upstream counsel.
> not meaning to offend anyone,
> but really, have a look at the drbd changelog
> of the last two years (8.0.3 was May 2007!).
>
> > I'm running into the "attempt to access beyond end of device"
> > condition written up on the list,
>
> this indeed has nothing to do with drbd version,
> but with operator error.
>
> > but it looks to me that I have over
> > 500MB (26%) of the drbd partition still available, even after the copy
> > would be complete.
> >
> > I did the check of IMD space requirements as per the formula given by
> > Lars, and it looks ok (see below).
> >
> > Any insights?
>
> > Version: 8.0.3 (api:86)
> > SVN Revision: 2881 build by build at node-44, 2008-04-03 21:30:55
> >
> > ## we're going to attempt to copy a 311MB file...
> >
> > primarybox:/public/klittle# ls -lh /sw/bigfile
> > -rwxr-xr-x 1 root root 311M Mar 9 2009 /sw/bigfile
> >
> > ## target is /public/klittle; /public is mounted on device /dev/drbd3:
> >
> > primarybox:/public/klittle# df .
> > Filesystem 1K-blocks Used Available Use% Mounted on
> > /dev/drbd3 1929068 1019452 811624 56% /public
> >
> > ## thus a copy of bigfile will take ~304000 1k-blocks.
> > ## this should leave ~507600 blocks (26%) available after the copy is
> done.
> >
> > ## /public was a existing partition prior to being put under drbd;
> > ## it was mounted on device /dev/sda7
> >
> > primarybox:/public/klittle# grep -e drbd3 -e sda7 /proc/partitions
> > 8 7 1959898 sda7
> > 147 3 1959800 drbd3
>
> > ## check IMD space requirements:
> > ## 1959898/(4*8*512*2)= 59.81134033203125
> > ## 60 + 36= 96
> > ## 1959898-96= 1959802 check!
>
> cool.
>
> unfortunately off track.
>
> you mkfs'ed on sda7, not on drbd3.
> so your file system _thinks_ it has the size of sda7 available,
> and feels free to allocate space somewhere beyond the end of drbd3.
> which fails.
>
> so don't do that.
>
> you apparently have found the other threads about this,
> so you already know how to recover.
>
> > ## note: for logistical/development reasons,
>
> which would that be?
>
> > I have skipped /dev/drbd1:
> > primarybox:/public/klittle# ls -la /dev/drbd*
> > brw-r--r-- 1 root root 147, 0 Jan 1 12:00 /dev/drbd
>
> that should be drbd0, not just "drbd".
>
> > brw-r--r-- 1 root root 147, 2 Jan 1 12:00 /dev/drbd2
> > brw-r--r-- 1 root root 147, 3 Jan 1 12:00 /dev/drbd3
> >
> >
> > ## but, even with head-room of 500MB (26%)...
>
>
>
> --
> : Lars Ellenberg
> : LINBIT | Your Way to High Availability
> : DRBD/HA support and consulting http://www.linbit.com
>
> DRBD(r) and LINBIT(r) are registered trademarks of LINBIT, Austria.
> __
> please don't Cc me, but send to list -- I'm subscribed
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