* 2.4.20-pre4 + LVM = hosed /proc/partitions
@ 2002-08-21 2:27 Erik Andersen
2002-08-21 3:04 ` Erik Andersen
0 siblings, 1 reply; 6+ messages in thread
From: Erik Andersen @ 2002-08-21 2:27 UTC (permalink / raw)
To: linux-kernel
Try compiling CONFIG_BLK_DEV_LVM into 2.4.20-pre4 and then run
'cat /proc/partitions' for some amusement. I really like the way
it prints /dev/lvmX, where X is first a-z, and then proceeds to
apparently increment X another 229 times...
$ cat /proc/partitions | wc -l
259
And /proc/partitions now contains only LVM entries...
-Erik
--
Erik B. Andersen http://codepoet-consulting.com/
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^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.20-pre4 + LVM = hosed /proc/partitions
2002-08-21 2:27 2.4.20-pre4 + LVM = hosed /proc/partitions Erik Andersen
@ 2002-08-21 3:04 ` Erik Andersen
2002-08-21 3:21 ` Jeff Chua
2002-08-21 13:45 ` Alan Cox
0 siblings, 2 replies; 6+ messages in thread
From: Erik Andersen @ 2002-08-21 3:04 UTC (permalink / raw)
To: linux-kernel
On Tue Aug 20, 2002 at 08:27:32PM -0600, Erik wrote:
> Try compiling CONFIG_BLK_DEV_LVM into 2.4.20-pre4 and then run
> 'cat /proc/partitions' for some amusement. I really like the way
It also seems to occur for md and ataraid.
-Erik
--
Erik B. Andersen http://codepoet-consulting.com/
--This message was written using 73% post-consumer electrons--
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.20-pre4 + LVM = hosed /proc/partitions
2002-08-21 3:04 ` Erik Andersen
@ 2002-08-21 3:21 ` Jeff Chua
2002-08-21 3:26 ` Erik Andersen
2002-08-21 13:45 ` Alan Cox
1 sibling, 1 reply; 6+ messages in thread
From: Jeff Chua @ 2002-08-21 3:21 UTC (permalink / raw)
To: Erik Andersen; +Cc: linux-kernel
On Tue, 20 Aug 2002, Erik Andersen wrote:
> On Tue Aug 20, 2002 at 08:27:32PM -0600, Erik wrote:
> > Try compiling CONFIG_BLK_DEV_LVM into 2.4.20-pre4 and then run
> > 'cat /proc/partitions' for some amusement. I really like the way
>
> It also seems to occur for md and ataraid.
You should consider switching to LVM2. LVM2 doesn't have such problem, and
it seems more stable too.
Jeff
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.20-pre4 + LVM = hosed /proc/partitions
2002-08-21 3:21 ` Jeff Chua
@ 2002-08-21 3:26 ` Erik Andersen
0 siblings, 0 replies; 6+ messages in thread
From: Erik Andersen @ 2002-08-21 3:26 UTC (permalink / raw)
To: Jeff Chua; +Cc: linux-kernel
On Wed Aug 21, 2002 at 11:21:04AM +0800, Jeff Chua wrote:
>
> On Tue, 20 Aug 2002, Erik Andersen wrote:
>
> > On Tue Aug 20, 2002 at 08:27:32PM -0600, Erik wrote:
> > > Try compiling CONFIG_BLK_DEV_LVM into 2.4.20-pre4 and then run
> > > 'cat /proc/partitions' for some amusement. I really like the way
> >
> > It also seems to occur for md and ataraid.
>
> You should consider switching to LVM2. LVM2 doesn't have such problem, and
> it seems more stable too.
I'm not actually using it. Just compiled it in and saw wierd
stuff happening...
-Erik
--
Erik B. Andersen http://codepoet-consulting.com/
--This message was written using 73% post-consumer electrons--
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: 2.4.20-pre4 + LVM = hosed /proc/partitions
2002-08-21 3:04 ` Erik Andersen
2002-08-21 3:21 ` Jeff Chua
@ 2002-08-21 13:45 ` Alan Cox
2002-08-21 14:06 ` [PATCH] 2.4.20-pre[234] hosed /proc/partitions fix Erik Andersen
1 sibling, 1 reply; 6+ messages in thread
From: Alan Cox @ 2002-08-21 13:45 UTC (permalink / raw)
To: andersen; +Cc: linux-kernel
On Wed, 2002-08-21 at 04:04, Erik Andersen wrote:
> On Tue Aug 20, 2002 at 08:27:32PM -0600, Erik wrote:
> > Try compiling CONFIG_BLK_DEV_LVM into 2.4.20-pre4 and then run
> > 'cat /proc/partitions' for some amusement. I really like the way
>
> It also seems to occur for md and ataraid.
Fixed in -ac for a while - not had time to do another sync with Marcelo
though
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH] 2.4.20-pre[234] hosed /proc/partitions fix
2002-08-21 13:45 ` Alan Cox
@ 2002-08-21 14:06 ` Erik Andersen
0 siblings, 0 replies; 6+ messages in thread
From: Erik Andersen @ 2002-08-21 14:06 UTC (permalink / raw)
To: Alan Cox, Marcelo Tosatti; +Cc: linux-kernel
On Wed Aug 21, 2002 at 02:45:06PM +0100, Alan Cox wrote:
> On Wed, 2002-08-21 at 04:04, Erik Andersen wrote:
> > On Tue Aug 20, 2002 at 08:27:32PM -0600, Erik wrote:
> > > Try compiling CONFIG_BLK_DEV_LVM into 2.4.20-pre4 and then run
> > > 'cat /proc/partitions' for some amusement. I really like the way
> >
> > It also seems to occur for md and ataraid.
>
> Fixed in -ac for a while - not had time to do another sync with Marcelo
> though
Sigh. I wished I'd known an hour ago, since it would have
saved me the bother of figuring it out myself.
Marcello,
Please apply the following patch to 2.4.20-pre5. The
patch that went into -pre2 had a nasty bug in it that
causes /proc/partitions to behave very badly. This
patch restores it to sanity.
--- drivers/block/genhd.c.orig Wed Aug 21 07:51:21 2002
+++ drivers/block/genhd.c Wed Aug 21 08:03:48 2002
@@ -194,9 +194,7 @@
/* show the full disk and all non-0 size partitions of it */
for (n = 0; n < (gp->nr_real << gp->minor_shift); n++) {
- int mask = (1<<gp->minor_shift) - 1;
-
- if (!(n & mask) || gp->part[n].nr_sects) {
+ if (gp->part[n].nr_sects) {
#ifdef CONFIG_BLK_STATS
struct hd_struct *hd = &gp->part[n];
-Erik
--
Erik B. Andersen http://codepoet-consulting.com/
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end of thread, other threads:[~2002-08-21 14:02 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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2002-08-21 2:27 2.4.20-pre4 + LVM = hosed /proc/partitions Erik Andersen
2002-08-21 3:04 ` Erik Andersen
2002-08-21 3:21 ` Jeff Chua
2002-08-21 3:26 ` Erik Andersen
2002-08-21 13:45 ` Alan Cox
2002-08-21 14:06 ` [PATCH] 2.4.20-pre[234] hosed /proc/partitions fix Erik Andersen
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