On Wed, Jan 09, 2008 at 02:32:53PM +0300, Anton Salikhmetov wrote:
...
This bug causes backup systems to *miss* changed files.
This problem is seen with both Amanda and TSM (Tivoli Storage Manager).
A site running Amanda with, say, a full backup weekly and incremental backups
daily, will
On Wed, Jan 09, 2008 at 02:32:53PM +0300, Anton Salikhmetov wrote:
Since no reaction in LKML was recieved for this message it seemed
logical to suggest closing the bug #2645 as WONTFIX:
http://bugzilla.kernel.org/show_bug.cgi?id=2645#c15
Thank you!
A quick run-down for those who don't know
On Wed, Jan 09, 2008 at 05:06:33PM -0500, Rik van Riel wrote:
...
Lather, rinse, repeat
Just verified this at one customer site; they had a db that was last backed up
in 2003 :/
On the other hand, updating the mtime and ctime whenever a page is dirtied
also does not work right.
On Thu, Jan 10, 2008 at 03:03:03AM +0300, Anton Salikhmetov wrote:
...
I guess a third possible time (if we want to minimize the number of
updates) would be when natural syncing of the file data to disk, by
other things in the VM, would be about to clear the I_DIRTY_PAGES
flag on the
...
I've double-checked the code for any possible off-by-one/overflow
errors.
...
Two things caught my eye.
...
+ case bol:
+ case subject:
+ if (*label_len = SMK_MAXLEN)
+ goto out;
+
On Fri, Aug 31, 2007 at 09:43:29AM -0700, Linus Torvalds wrote:
...
This is *not* a security hole. In order to make it a security hole, you
need to be root in the first place.
Non-root users can write to places where root might believe they cannot write
because he might be under the mistaken
On Thu, Aug 30, 2007 at 10:16:37PM -0700, Linus Torvalds wrote:
...
Why aren't we doing that for any other filesystem than NFS?
How hard is it to acknowledge the following little word:
regression
It's simple. You broke things. You may want to fix them, but you need to
fix them
On Fri, Aug 31, 2007 at 01:07:56AM -0700, Linus Torvalds wrote:
...
When we add NEW BEHAVIOUR, we don't add it to old interfaces when that
breaks old user mode! We add a new flag saying I want the new behaviour.
This is not rocket science, guys. This is very basic kernel behaviour. The
On Sun, Aug 05, 2007 at 09:28:05AM +0200, Ingo Molnar wrote:
* Alan Cox [EMAIL PROTECTED] wrote:
Can you give examples of backup solutions that rely on atime being
updated? I can understand backup tools using mtime/ctime for
incremental backups (like tar + Amanda, etc), but I'm
On Sun, Aug 05, 2007 at 06:42:30AM -0400, Jeff Garzik wrote:
...
If you can show massive amounts of users that will actually be
negatively impacted, please present hard evidence.
Otherwise all this is useless hot air.
Peace Jeff :)
In another mail, I gave an example with tmpreaper
On Sat, Aug 04, 2007 at 02:08:40PM -0400, Jeff Garzik wrote:
Linus Torvalds wrote:
The relatime thing that David mentioned might well be very useful, but
it's probably even less used than noatime is. And sadly, I don't really
see that changing (unless we were to actually change the defaults
On Sun, Aug 05, 2007 at 02:46:48PM +0200, Ingo Molnar wrote:
* Jakob Oestergaard [EMAIL PROTECTED] wrote:
If you can show massive amounts of users that will actually be
negatively impacted, please present hard evidence.
Otherwise all this is useless hot air.
Peace Jeff
Hello list,
Setup;
NFS server (dual opteron, HW RAID, SCA disk enclosure) on 2.6.11.6
NFS client (dual PIII) on 2.6.11.6
Both on switched gigabit ethernet - I use NFSv3 over UDP (tried TCP but
this makes no difference).
Problem; during simple tests such as a 'cp largefile0 largefile1' on
On Wed, Apr 06, 2005 at 05:28:56PM -0400, Trond Myklebust wrote:
...
A look at nfsstat might help, as might netstat -s.
In particular, I suggest looking at the retrans counter in nfsstat.
When doing a 'cp largefile1 largefile2' on the client, I see approx. 10
retransmissions per second in
On Thu, Apr 07, 2005 at 09:19:06AM +1000, Greg Banks wrote:
...
How large is the client's RAM?
2GB - (32 bit kernel because it's dual PIII, so I use highmem)
A few more details:
With standard VM settings, the client will be laggy during the copy, but
it will also have a load average around 10
On Thu, Apr 07, 2005 at 12:17:51PM -0400, Trond Myklebust wrote:
to den 07.04.2005 Klokka 17:38 (+0200) skreiv Jakob Oestergaard:
I tweaked the VM a bit, put the following in /etc/sysctl.conf:
vm.dirty_writeback_centisecs=100
vm.dirty_expire_centisecs=200
The defaults are 500
On Sat, Apr 09, 2005 at 05:52:32PM -0400, Trond Myklebust wrote:
lau den 09.04.2005 Klokka 23:35 (+0200) skreiv Jakob Oestergaard:
2.6.11.6: (dual PIII 1GHz, 2G RAM, Intel e1000)
File Block Num Seq ReadRand Read Seq Write Rand Write
DirSize Size Thr Rate
On Mon, Apr 11, 2005 at 08:35:39AM -0400, Trond Myklebust wrote:
...
That certainly shouldn't be the case (and isn't on any of my setups). Is
the behaviour identical same on both the PIII and the Opteron systems?
The dual opteron is the nfs server
The dual athlon is the 2.4 nfs client
The
On Mon, Apr 11, 2005 at 10:35:25AM -0400, Trond Myklebust wrote:
må den 11.04.2005 Klokka 15:47 (+0200) skreiv Jakob Oestergaard:
Certainly;
http://unthought.net/binary.dmp.bz2
I got an 'invalid snaplen' with the 9 you suggested, the above dump
is done with 9000 - if you need
On Mon, Apr 11, 2005 at 11:21:45AM -0400, Trond Myklebust wrote:
må den 11.04.2005 Klokka 16:41 (+0200) skreiv Jakob Oestergaard:
That can mean either that the server is dropping fragments, or that the
client is dropping the replies. Can you generate a similar tcpdump on
the server
On Tue, Apr 12, 2005 at 11:03:29AM +1000, Greg Banks wrote:
On Tue, 2005-04-12 at 01:42, Jakob Oestergaard wrote:
Yes, as far as I know - the Broadcom Tigeon3 driver does not have the
option of enabling/disabling RX polling (if we agree that is what we're
talking about), but looking in tg3
On Tue, Apr 12, 2005 at 11:28:43AM +0200, Jakob Oestergaard wrote:
...
But still, guys, it is the *same* server with tg3 that runs well with a
2.4 client but poorly with a 2.6 client.
Maybe I'm just staring myself blind at this, but I can't see how a
general problem on the server
On Fri, Jul 22, 2005 at 11:31:38AM +0200, Christoph Pleger wrote:
Hello,
...
There is no highmem option for the 64-bit kernel, because it doesn't
need one.
I have two questions:
1. Is it possible to compile a 64-bit kernel on a 32-bit machine (or at
least on a 64-bit machine with
On Fri, Jul 22, 2005 at 01:37:46PM +0200, Christoph Pleger wrote:
Hello,
...
I am also using Debian sarge. I extracted the tarfile to /usr/local/bin
end executed kmake menuconfig. Everything seemed fine so far. But a
few seconds after starting the compilation (kmake bzImage) I got this
On Tue, Apr 19, 2005 at 06:46:28PM -0400, Trond Myklebust wrote:
ty den 19.04.2005 Klokka 21:45 (+0200) skreiv Jakob Oestergaard:
It mounts a home directory from a 2.6.6 NFS server - the client and
server are on a hub'ed 100Mbit network.
On the earlier 2.6 client I/O performance
On Wed, Jul 06, 2005 at 02:26:57AM -0700, Rob Prowel wrote:
[1.] One line summary of the problem:
2.4 and 2.6 kernel headers use c++ reserved word new
as identifier in function prototypes.
Correction:
[1.] One line summary of problem:
Userspace application is making use of private
On Sat, Jan 15, 2005 at 01:09:08PM +1100, Nathan Scott wrote:
...
AFAIK the best you can do is to get the most recent XFS kernel from
SGI's CVS (this one is based on 2.6.10).
The -mm tree also has these fixes; we'll get them merged into
mainline soon.
Okeydokey - good
If you run that
On Sun, Jan 16, 2005 at 01:51:12PM +, Christoph Hellwig wrote:
On Fri, Jan 14, 2005 at 07:23:09PM +0100, Jakob Oestergaard wrote:
So apart from the general well known instability problems that will
occur when you actually start *using* the system, there should be no
What known
On Wed, Jan 19, 2005 at 11:48:52AM +0100, Kiniger wrote:
...
some random thoughts:
nowadays hardware sector sizes are much bigger than 512 bytes
No :)
and
the read error may affect some sectors +- the sector which actually
returned the error.
That's right
to keep the handling in
On Thu, Aug 04, 2005 at 02:19:21PM +0100, Hugh Dickins wrote:
...
Even on 32bit architectures it is far too small and doesn't
make much sense. Does anybody remember why we even have this limit?
To be like the UNIXes.
:)
...
Anton proposed raising the limits last autumn, but I was a bit
On Thu, Jan 17, 2008 at 01:25:39PM -0800, Linus Torvalds wrote:
...
Why do you make that mistake, when it is PROVABLY NOT TRUE!
Try this trivial program:
int main(int argc, char **argv)
{
int i;
const int *c;
i = 5;
On Fri, Jan 18, 2008 at 02:31:16PM +0100, Björn Steinbrink wrote:
...
Do you see anything that casts the const away? No? Me neither. Still,
the memory that p points to was changed, because there was another
pointer and that was not const.
*another* being key here.
*That* is the purpose
On Fri, Jan 18, 2008 at 12:47:01PM +0100, Giacomo A. Catenazzi wrote:
...
restrict exists for this reason. const is only about lvalue.
You think that I try to put more meaning into const than I do - but I don't.
Please read what I wrote, not what you want to think I wrote.
I agree that if I
Hello list,
Setup;
NFS server (dual opteron, HW RAID, SCA disk enclosure) on 2.6.11.6
NFS client (dual PIII) on 2.6.11.6
Both on switched gigabit ethernet - I use NFSv3 over UDP (tried TCP but
this makes no difference).
Problem; during simple tests such as a 'cp largefile0 largefile1' on
On Wed, Apr 06, 2005 at 05:28:56PM -0400, Trond Myklebust wrote:
...
> A look at "nfsstat" might help, as might "netstat -s".
>
> In particular, I suggest looking at the "retrans" counter in nfsstat.
When doing a 'cp largefile1 largefile2' on the client, I see approx. 10
retransmissions per
On Thu, Apr 07, 2005 at 09:19:06AM +1000, Greg Banks wrote:
...
> How large is the client's RAM?
2GB - (32 bit kernel because it's dual PIII, so I use highmem)
A few more details:
With standard VM settings, the client will be laggy during the copy, but
it will also have a load average around
On Thu, Apr 07, 2005 at 12:17:51PM -0400, Trond Myklebust wrote:
> to den 07.04.2005 Klokka 17:38 (+0200) skreiv Jakob Oestergaard:
>
> > I tweaked the VM a bit, put the following in /etc/sysctl.conf:
> > vm.dirty_writeback_centisecs=100
> > vm.dirty_expire_centisecs=2
On Sat, Apr 09, 2005 at 05:52:32PM -0400, Trond Myklebust wrote:
> lau den 09.04.2005 Klokka 23:35 (+0200) skreiv Jakob Oestergaard:
>
> > 2.6.11.6: (dual PIII 1GHz, 2G RAM, Intel e1000)
> >
> > File Block Num Seq ReadRand Read Seq Write Rand Write
On Mon, Apr 11, 2005 at 08:35:39AM -0400, Trond Myklebust wrote:
...
> That certainly shouldn't be the case (and isn't on any of my setups). Is
> the behaviour identical same on both the PIII and the Opteron systems?
The dual opteron is the nfs server
The dual athlon is the 2.4 nfs client
The
On Mon, Apr 11, 2005 at 10:35:25AM -0400, Trond Myklebust wrote:
> må den 11.04.2005 Klokka 15:47 (+0200) skreiv Jakob Oestergaard:
>
> > Certainly;
> >
> > http://unthought.net/binary.dmp.bz2
> >
> > I got an 'invalid snaplen' with the 9 you suggested,
On Mon, Apr 11, 2005 at 11:21:45AM -0400, Trond Myklebust wrote:
> må den 11.04.2005 Klokka 16:41 (+0200) skreiv Jakob Oestergaard:
>
> > > That can mean either that the server is dropping fragments, or that the
> > > client is dropping the replies. Can you ge
On Tue, Apr 12, 2005 at 11:03:29AM +1000, Greg Banks wrote:
> On Tue, 2005-04-12 at 01:42, Jakob Oestergaard wrote:
> > Yes, as far as I know - the Broadcom Tigeon3 driver does not have the
> > option of enabling/disabling RX polling (if we agree that is what we're
> > talkin
On Tue, Apr 12, 2005 at 11:28:43AM +0200, Jakob Oestergaard wrote:
...
>
> But still, guys, it is the *same* server with tg3 that runs well with a
> 2.4 client but poorly with a 2.6 client.
>
> Maybe I'm just staring myself blind at this, but I can't see how a
> general pro
On Tue, Apr 19, 2005 at 06:46:28PM -0400, Trond Myklebust wrote:
> ty den 19.04.2005 Klokka 21:45 (+0200) skreiv Jakob Oestergaard:
>
> > It mounts a home directory from a 2.6.6 NFS server - the client and
> > server are on a hub'ed 100Mbit network.
> >
> >
On Wed, Jul 06, 2005 at 02:26:57AM -0700, Rob Prowel wrote:
> [1.] One line summary of the problem:
>
> 2.4 and 2.6 kernel headers use c++ reserved word "new"
> as identifier in function prototypes.
Correction:
[1.] One line summary of problem:
Userspace application is making use of
On Thu, Aug 04, 2005 at 02:19:21PM +0100, Hugh Dickins wrote:
...
> > Even on 32bit architectures it is far too small and doesn't
> > make much sense. Does anybody remember why we even have this limit?
>
> To be like the UNIXes.
:)
...
> Anton proposed raising the limits last autumn, but I was
On Fri, Jul 22, 2005 at 11:31:38AM +0200, Christoph Pleger wrote:
> Hello,
...
> > There is no highmem option for the 64-bit kernel, because it doesn't
> > need one.
>
> I have two questions:
>
> 1. Is it possible to compile a 64-bit kernel on a 32-bit machine (or at
> least on a 64-bit machine
On Fri, Jul 22, 2005 at 01:37:46PM +0200, Christoph Pleger wrote:
> Hello,
>
...
> I am also using Debian sarge. I extracted the tarfile to /usr/local/bin
> end executed "kmake menuconfig". Everything seemed fine so far. But a
> few seconds after starting the compilation (kmake bzImage) I got
On Sat, Jan 15, 2005 at 01:09:08PM +1100, Nathan Scott wrote:
...
> > AFAIK the best you can do is to get the most recent XFS kernel from
> > SGI's CVS (this one is based on 2.6.10).
>
> The -mm tree also has these fixes; we'll get them merged into
> mainline soon.
Okeydokey - good
>
> > If
On Sun, Jan 16, 2005 at 01:51:12PM +, Christoph Hellwig wrote:
> On Fri, Jan 14, 2005 at 07:23:09PM +0100, Jakob Oestergaard wrote:
> > So apart from the general well known instability problems that will
> > occur when you actually start *using* the system, there should be no
On Wed, Jan 19, 2005 at 11:48:52AM +0100, Kiniger wrote:
...
> some random thoughts:
>
> nowadays hardware sector sizes are much bigger than 512 bytes
No :)
> and
> the read error may affect some sectors +- the sector which actually
> returned the error.
That's right
>
> to keep the handling
On Thu, Aug 30, 2007 at 10:16:37PM -0700, Linus Torvalds wrote:
>
...
> > Why aren't we doing that for any other filesystem than NFS?
>
> How hard is it to acknowledge the following little word:
>
> "regression"
>
> It's simple. You broke things. You may want to fix them, but you need to
On Fri, Aug 31, 2007 at 01:07:56AM -0700, Linus Torvalds wrote:
...
> When we add NEW BEHAVIOUR, we don't add it to old interfaces when that
> breaks old user mode! We add a new flag saying "I want the new behaviour".
>
> This is not rocket science, guys. This is very basic kernel behaviour. The
On Fri, Aug 31, 2007 at 09:43:29AM -0700, Linus Torvalds wrote:
...
> This is *not* a security hole. In order to make it a security hole, you
> need to be root in the first place.
Non-root users can write to places where root might believe they cannot write
because he might be under the mistaken
On Sun, Aug 05, 2007 at 09:28:05AM +0200, Ingo Molnar wrote:
>
> * Alan Cox <[EMAIL PROTECTED]> wrote:
>
> > > Can you give examples of backup solutions that rely on atime being
> > > updated? I can understand backup tools using mtime/ctime for
> > > incremental backups (like tar + Amanda,
On Sun, Aug 05, 2007 at 06:42:30AM -0400, Jeff Garzik wrote:
...
> If you can show massive amounts of users that will actually be
> negatively impacted, please present hard evidence.
>
> Otherwise all this is useless hot air.
Peace Jeff :)
In another mail, I gave an example with tmpreaper
On Sat, Aug 04, 2007 at 02:08:40PM -0400, Jeff Garzik wrote:
> Linus Torvalds wrote:
> >The "relatime" thing that David mentioned might well be very useful, but
> >it's probably even less used than "noatime" is. And sadly, I don't really
> >see that changing (unless we were to actually change
On Sun, Aug 05, 2007 at 02:46:48PM +0200, Ingo Molnar wrote:
>
> * Jakob Oestergaard <[EMAIL PROTECTED]> wrote:
>
> > > If you can show massive amounts of users that will actually be
> > > negatively impacted, please present hard evidence.
> > >
&
...
> I've double-checked the code for any possible off-by-one/overflow
> errors.
...
Two things caught my eye.
...
> + case bol:
> + case subject:
> + if (*label_len >= SMK_MAXLEN)
> + goto out;
> +
On Wed, Jan 09, 2008 at 02:32:53PM +0300, Anton Salikhmetov wrote:
...
>
> This bug causes backup systems to *miss* changed files.
>
This problem is seen with both Amanda and TSM (Tivoli Storage Manager).
A site running Amanda with, say, a full backup weekly and incremental backups
daily, will
On Wed, Jan 09, 2008 at 02:32:53PM +0300, Anton Salikhmetov wrote:
> Since no reaction in LKML was recieved for this message it seemed
> logical to suggest closing the bug #2645 as "WONTFIX":
>
> http://bugzilla.kernel.org/show_bug.cgi?id=2645#c15
Thank you!
A quick run-down for those who don't
On Wed, Jan 09, 2008 at 05:06:33PM -0500, Rik van Riel wrote:
...
> >
> > Lather, rinse, repeat
Just verified this at one customer site; they had a db that was last backed up
in 2003 :/
>
> On the other hand, updating the mtime and ctime whenever a page is dirtied
> also does not work
On Thu, Jan 10, 2008 at 03:03:03AM +0300, Anton Salikhmetov wrote:
...
> > I guess a third possible time (if we want to minimize the number of
> > updates) would be when natural syncing of the file data to disk, by
> > other things in the VM, would be about to clear the I_DIRTY_PAGES
> > flag on
On Thu, Jan 17, 2008 at 01:25:39PM -0800, Linus Torvalds wrote:
...
> Why do you make that mistake, when it is PROVABLY NOT TRUE!
>
> Try this trivial program:
>
> int main(int argc, char **argv)
> {
> int i;
> const int *c;
>
> i = 5;
On Fri, Jan 18, 2008 at 02:31:16PM +0100, Björn Steinbrink wrote:
...
>
> Do you see anything that casts the const away? No? Me neither. Still,
> the memory that p points to was changed, because there was another
> pointer and that was not const.
*another* being key here.
>
> > *That* is the
On Fri, Jan 18, 2008 at 12:47:01PM +0100, Giacomo A. Catenazzi wrote:
...
> "restrict" exists for this reason. const is only about lvalue.
You think that I try to put more meaning into const than I do - but I don't.
Please read what I wrote, not what you want to think I wrote.
I agree that if I
66 matches
Mail list logo
