On Mon, Apr 15, 2013 at 10:18:15PM +0300, Konstantin Belousov wrote:
> On Mon, Apr 15, 2013 at 08:42:03PM +0200, Pawel Jakub Dawidek wrote:
> > On a mostly unrelated note when two threads (T0 and T1) call get*time()
> > on two different cores, but T0 does that a bit earlier is it po
es that a bit earlier is it possible
that T0 can get later time than T1?
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d you might not be
able to allocate memory even if you have physical pages available.
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On Sun, Nov 25, 2012 at 01:48:23PM +, Attilio Rao wrote:
> On Sun, Nov 25, 2012 at 1:47 PM, Pawel Jakub Dawidek wrote:
> > On Sun, Nov 25, 2012 at 01:37:19PM +, Attilio Rao wrote:
> >> On Sun, Nov 25, 2012 at 1:12 PM, Pawel Jakub Dawidek
> >> wrote:
> >
On Sun, Nov 25, 2012 at 01:37:19PM +, Attilio Rao wrote:
> On Sun, Nov 25, 2012 at 1:12 PM, Pawel Jakub Dawidek wrote:
> > On Sun, Nov 25, 2012 at 12:42:16PM +, Attilio Rao wrote:
> >> On Sun, Nov 25, 2012 at 12:39 PM, Pawel Jakub Dawidek
> >> wrote:
> >
On Sun, Nov 25, 2012 at 12:42:16PM +, Attilio Rao wrote:
> On Sun, Nov 25, 2012 at 12:39 PM, Pawel Jakub Dawidek
> wrote:
> > WITNESS is a development tool. We don't ship production kernels with
> > WITNESS even compiled in. What is more efficient use of developer
S even compiled in. What is more efficient use of developer time:
going through full reboot cycle every time or reading the warning from
console, unloading a module, fixing the bug and loading it again?
And if this option is turned off by default what is the problem?
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Pawel Jakub Dawidek
nce. I didn't succeed on my first attempt to
install FreeBSD, neither on the second attempt. It took me few tries to
do it right. I knew nothing about UNIX back then. I consider myself as
someone who improved FreeBSD a bit, but I could as easly gave up after
first two failed attempts to install
rs to
turn it off.
If this feature is going to prints quite a few extra lines, let's just
add one more line saying:
To disable this message run: echo set 31337mode >> ~/.tcshrc
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FreeBSD committer
>
> Because I find on Linux it often gets it wrong and winds up being useless
> noise. Mostly, though, it is because I mistype commands more than I type
> commands that should be there, but aren't.
It is even cooler than I thought initially. It punishes you for making
typos:)
; > of the spec too?
>
> It's the same disk, isn't it? The OS can actually use the property
> of the ID to infer that it has already seen this disk and not create
> multiple device nodes.
You cannot trust some id that is found on disk to be unique, as all
your assumptions
uration is non-standard and problems are expected if the disk is
shared between other OSes.
In my opinion that's fair.
With such a warning in place, I think we can allow users to decide on
their own if they really want that or not. Then, we can also improve
FreeBSD boot lo
On Wed, Jun 27, 2012 at 10:45:35AM -0700, Marcel Moolenaar wrote:
>
> On Jun 26, 2012, at 2:43 PM, Pawel Jakub Dawidek wrote:
> >
> > As for sharing disk with other OS. If you share the disk with OS that
> > doesn't support gmirror, you shouldn't use gmirror in
ow the hardware you are running on, so you know where the disks
are exactly, etc. My company build appliances too, so I have been there.
For most of our users automatic configuration is simply better, as they
can shuffle disks around and not wonder if the system will boot or not.
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t it. Pretending gmirror is special and
recommending to mirror partitions with it instead of raw disks is not
the solution.
I really can't see how gmirror is different in this regard from any
other software RAID or volume manager. If you try to use disk that
contains unrecognized metadata
rmats that are recognized by all your
OSes.
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ey is proposing is to
recognize the metadata and act accordingly - in case of a gmirror we
simply need to skip it.
In the future we will have the same problem with graid - until we add
support for it to the boot code, we won't be able to boot from it.
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On Tue, Jun 26, 2012 at 06:01:26PM +0400, Andrey V. Elsukov wrote:
> On 26.06.2012 16:57, Pawel Jakub Dawidek wrote:
> > On Tue, Jun 26, 2012 at 04:50:36PM +0400, Andrey V. Elsukov wrote:
> >> Hi All,
> >>
> >> Some time ago i have started reading the code
this is only
> for the first rescue step.
>
> 6. I have changed userboot interface. I guess there is none consumers except
> the one test program. But if it isn't that, i can make it compatible.
>
> Any comments are welcome.
>
> --
> WBR, Andrey V. Elsuko
eems a bit too far for my taste. Spawning a daemon somewhere from
within library doesn't sound like a good idea to me... At least until we
have something like launchd that can start such services on demand.
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r_uids = 0;
> + restricted = is_user_restricted(pw, see_other_uids);
> +
> while ((ut = getutxent()) != NULL) {
> + /* Skip this entry if the invoking user is not permitted
> + * to see it */
> + if (restricted &&
&
hances are they are safe to mount from
within a jail, like ZFS (user can have access to ZFS datasets, but don't
need access to ZFS pool), NFS, SMBFS, NULLFS, UNIONFS, PROCFS, FDESCFS,
etc. I added VFCF_JAIL flag, so there is general mechanism to mark file
systems as jail-friendly, but back then I on
ion encrypted.
I don't fully understand how you can boot your system and then need to
attach GELI provider to be able to install world. If you booted fine
then your system is available and not encrypted.
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more people could benefit from it (e.g. those having
> SD/SDHC/etc
> cards).
Once you detect read-only media, I suggest to implement the support by
adding new DISKFLAG_READONLY to disk(9) API and simply deny write access
in g_disk_access() when DISKFLAG_READONLY is set.
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Pawel Jakub D
some point disks will be detected and
presented as 4kB providers to the GEOM, this class won't be able to find
its metadata anymore (as it was stored in the last 512 bytes, not in the
last 4 kilobytes).
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p...@freebsd.
On Sun, Aug 08, 2010 at 02:02:17PM +0200, Ivan Voras wrote:
> On 8.8.2010 12:30, Pawel Jakub Dawidek wrote:
> > So why do you want to obfuscate glabel with it? For people to start
> > depend on it? Once we start supporting 4kB sectors what do we do with
> > such a change? R
uld just work.
Glabel is not for that and I don't agree for such obfuscation.
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ss when bug is found is very, very bad.
Another reason is performance. You can see how much faster, eg. openssl
crypto is when doing it in userland and when forcing it to use software
crypto from the opencrypto kernel framework.
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separately, not sure where. There is ongoing discussion
somwhere on importing this algorithm to the base for tar(1) to use, it
would be best to have only one copy of code in the tree.
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p...@freebsd.org
On Sat, Jan 30, 2010 at 12:44:51PM +0100, Pawel Jakub Dawidek wrote:
> Maybe I'll add how I understand what's going on:
>
> GEOM calls destroy_dev() while holding the topology lock.
>
> Destroy_dev() wants to destroy device, but can't because there are
> threads
On Sat, Jan 30, 2010 at 12:27:49PM +0100, Pawel Jakub Dawidek wrote:
> On Sat, Jan 30, 2010 at 12:58:26AM +0200, Alexander Motin wrote:
> > Hi.
> >
> > Experimenting with SATA hot-plug I've found quite repeatable deadlock
> > case. Problem observed when severa
sys_exit+0x1d
[...]
db> show lock 0x8079a348
class: sx
name: GEOM topology
state: XLOCK: 0x85d0d000 (tid 100008, pid 2, "g_event")
waiters: exclusive
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p...@freebsd.org http://www.FreeBSD.or
SD behaviour (ie. inherit group ownership from the parent directory),
but it become broken during v6 -> v13 switch. Could you file PR for
this, I should be able to fix it before 8.0-RELEASE.
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p...@freebsd.org
D 7.x kthread_create() creates a process
without file descriptor table, so you can't use kern_open() and actually
you shouldn't do this either.
Take a look at sys/cddl/compat/opensolaris/kern/opensolaris_kobj.c,
where you can find functions to do what you want.
I guess you already con
obj.c
> @@ -798,7 +798,9 @@ link_elf_load_file(linker_class_t cls, const char
> *filename,
> link_elf_reloc_local(lf);
>
> /* Pull in dependencies */
> + VOP_UNLOCK(nd.ni_vp);
> error = linker_load_dependencies(lf);
> + vn_lock(nd.ni_vp, LK_EXCLUSIVE | LK_RETRY
50513 at syscall+0x283
#17 0x80634e40 at Xint0x80_syscall+0x20
[...]
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On Mon, Jul 21, 2008 at 02:10:00PM +0200, Patrick Lamaizi?re wrote:
> Le Sun, 20 Jul 2008 21:39:55 +0200,
> Pawel Jakub Dawidek <[EMAIL PROTECTED]> a écrit :
>
> Hello,
>
> > > In the "opencrypto framework" the function crypto_register() has an
>
iver is loaded.
If I read code properly, there is currently no way for a driver to say
to the opencrypto framework that only AES-CBC with 128bit key is
supported. A driver can only state that it supports AES-CBC, that's all.
As a workaround the driver should implement AES-
On Thu, Jun 05, 2008 at 04:00:13PM +0200, Ivan Voras wrote:
> Pawel Jakub Dawidek wrote:
>
> > If we're comparing who has bigger... :)
> >
> > beast:root:~# zpool list
> > NAMESIZEUSED AVAILCAP HEALTH ALTROOT
> > tan
o it in a different way if that
was possible. Maybe it's worth contacting OpenBSD/NetBSD and ask? There
might be a good reason for that.
> - Any comment is welcome, this is my first work on a driver.
Looks good:) I can do a final review and commit once you are done and if
I'll be able
On Thu, Jun 05, 2008 at 02:10:02PM +0100, Hugo Silva wrote:
> Pawel Jakub Dawidek wrote:
> >PS. I'm quite sure the ZFS version I've in perforce will fix most if not
> >all 'kmem_map too small' panics. It's not yet committed, but I do want
> >to MFC it
east:root:~# zpool list
NAMESIZEUSED AVAILCAP HEALTH ALTROOT
tank732G604G128G82% ONLINE -
but:
beast:root:~# zfs list | wc -l
1932
No panics.
PS. I'm quite sure the ZFS version I've in perforce wi
n.
Could you also try to decrease vfs.zfs.arc_max?
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red there could still be important data
in RAM (eg. file system's buffer cache).
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on the given vnode,
do the same for /etc/passwd and others and compare their inodes and
file system ids. Performance hit may be significant for complex
policies.
You can register yourself for process_exit, process_fork and
process_exec in-kernel events and do your cleanups from your event
handler. Take
;
But I guess the most common use is:
gid_t gids[NGROUPS_MAX];
int gidsetlen;
gidsetlen = getgroups(NGROUPS_MAX, gids);
Binaries using the latter method should be just fine.
BTW. The latter method is what all utilities from the base system use.
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On Wed, Sep 19, 2007 at 01:30:44PM -0600, James Gritton wrote:
> Pawel Jakub Dawidek wrote:
> >Something like this:
> > http://garage.freebsd.pl/mljail.README
> >
> >I did it some time ago, and this is one of the feature for new jail
> >implementation with is
wn code.
Something like this:
http://garage.freebsd.pl/mljail.README
I did it some time ago, and this is one of the feature for new jail
implementation with is beeing designed.
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re on how it works.
It probably mostly an optimization and probably protection before some
races, so you can call various functions with vnode's interlock already
held.
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On Sun, Jan 14, 2007 at 07:18:04PM +0100, Attila Nagy wrote:
> On 2007.01.12. 20:06, Pawel Jakub Dawidek wrote:
> >Silent data corruptions happens, look for example at the "problem with
> >4T volume under FreeBSD" thread on [EMAIL PROTECTED]
> >
> >I
oduction, my customer using it in production on large
number of FreeBSD servers and I also have heard already many success
stories, BUT I still consider the code to be experimental.
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ss the errors up.
This is what I did in ggate and it seems to work.
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rror, the error
> doesn't appear...
Silent data corruptions happens, look for example at the "problem with
4T volume under FreeBSD" thread on [EMAIL PROTECTED]
I'd suggest configuring geli with data authentication on top of the FC
array. geli will detect si
I missing?
> There is no libubsec.so in the system.
>
> Any help will be appreciated.
'-engine ubsec' will try to use userland driver. If you loaded ubsec.ko
and cryptodev.ko, you should use '-engine cryptodev'.
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Pawel Jakub Dawidek http://w
e some starting code for this and I'm planning to implement them, at
least for ZFS.
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ce account for you would be a good start. Would you like
to work there?
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On Sat, Aug 26, 2006 at 08:19:40PM -0500, Eric Anderson wrote:
> On 08/26/06 07:44, Pawel Jakub Dawidek wrote:
> >On Sat, Aug 26, 2006 at 07:23:36AM -0500, Eric Anderson wrote:
> >>Hmm - had another panic. Again, screen shots are here:
> >>
> >>http:/
On Sat, Aug 26, 2006 at 07:23:36AM -0500, Eric Anderson wrote:
> Hmm - had another panic. Again, screen shots are here:
>
> http://www.googlebit.com/freebsd/snapshots/gjournal_panic2/
I can't find panic message. What was it?
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Pawel Jakub Dawidek http:
ror=35).
I'm aware of this, but it is harmless. On journal switch gjournal cannot
synchronize the file system, so it will try again later. It should be
probably better logged (as a warning).
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patch was not yet merged to RELENG_6, can you try it?
http://people.freebsd.org/~pjd/patches/vfs_subr.c.3.patch
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FreeBSD committer
m out of town tomorrow, I'll try to take a look when I'm back. We saw
snapshot/gjournal related deadlocks, but all were fixed, maybe there is
a fix which wasn't comitted.
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[EMAIL PROTECTED]
panics without graid3. For
example on a plain disk, but with 2kB sector size (you can do it with
gnop(8)). You can also try gstripe(8) your disks with small stripesize,
eg. 512 bytes and use gnop(8) on top of it to change sector size, so all
disks will be used, in case there is a problem with your
uio_resid as the number
of bytes to proceed, so it has to be set before the call.
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ecover data or get the machine to boot?
Can you provide more info? There should be more interesting informations
before those you pasted.
There was a lot of fixes to gmirror in 6.1, so you may consider an
upgrade.
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Pawel Jakub Dawidek http://www.wheel.pl
[EMA
with your private
key and on authentication, you should provide data from your finger scan
and data to sign - on match, it should return signed data, which you can
use to continue authentication process.
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o you must create one for your own.
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this.
This is a bit tricky, ie. there is no clean API for this, but it is of
course possible.
There are few frameworks in the kernel that do exactly this. One of them
is alq(9), so take a look at sys/kern/kern_alq.c.
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Pawel Jakub Dawidek http://www.wheel.pl
[EMA
should be
configured in /boot/loader.conf.
2. If memory type is in kernel module, vm.memguard_desc sysctl should be
configured before loading the module.
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FreeBSD
o protect our
users from a foot-shooting).
And because of the way SU works, it is possible to run background fsck,
as the only problems are unreferenced objects (inodes, blocks, etc.).
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[EMAIL PROTECTED] http:/
On Fri, Dec 16, 2005 at 05:27:11PM +0700, Vitaliy Ovsyannikov wrote:
+> Hello, freebsd-hackers.
+>
+> Please, look at the output and help if you can:
+>
+> # tar -yxf geom_gate.tbz
+> # cd geom_gate
+> # make
[...]
Why don't you just use ggate from the base system
so
jexec won't work here.
Try to ssh into the jail and then ssh to another box.
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pgpRTiVDk
; I suspect it is not the card as much as the driver, but I am not sure.
I was able to modify the driver in a way multipathing started to work
(no more hanging request when path was disconnected). It was hackish,
but worked, so I'm quite sure it's driver's fault.
--
Pawel Jakub Dawid
or ggated(8) and ggatec(8)
+> ;)
Thanks a lot! Unfortunately I don't have time to setup test environment
(I don't use ipv6 at all) and it can take a while before I'll be ready
for committing this (if noone else beat me on this).
I'll be grateful if you could file PR and send
ements (managing keys, protecting passphrases,
metadata backups, encrypted root partition, etc.) are or could be the same.
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em:)
I'm not going to commit it by myself.
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e bootloader). The passphrase is entered at the bootloader prompt
+> or embedded in the bootloader.
This is not not possible with current GBDE.
I've patches which allows this here:
http://people.freebsd.org/~pjd/patches/gbde.patch
--
Pawel Jakub Dawidek http://www
noon, so
+> it's perfectly possible that I'm missing some vital point or that it's
+> complete nonsense :)
+>
+> Does it make sense to do it this way? Is it worth applying for the SoC?
Not sure. Basically this is simlar what softupdate does, I think.
ovide
+> source.
It would be probably useful for wintess, so when first order is stored,
it can be stored with stack and on LOR, both backtraces can be shown.
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Free
configurations and is there any
+> wisdom about ggate configurations?
Set kern.geom.gate.debug to 1 and send output which is generated on
failures.
I've much improved ggate in perforce, but it needs some polishing still...
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Pawel Jakub Dawidek http://www.wheel.pl
lping to resolve them.
Frankly, I don't know. It just needs detailed testing.
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On Wed, Feb 02, 2005 at 12:52:17AM +0800, Xin LI wrote:
+> ??? 2005-02-01?? 11:40 +0100???Pawel Jakub Dawidek?
+> > The thing that can be useful IMHO is possibility to use
+> > reboot(8)/shutdown(8), etc. inside a jail, but...
+> > I'm unfortunately too busy
IMHO is possibility to use
reboot(8)/shutdown(8), etc. inside a jail, but...
I'm unfortunately too busy with other (probably less interesting, but
profitable) projects.
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you have dedicated mirror only for swap (e.g. mirror on ad0s1b and
ad2s1b) you probably should be able to dump into ad[02]s1b (but I didn't
test it).
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Fre
irrors, after unclean shutdown you
probably don't need rebuild all mirrors.
The argument against could be that when you synchronize many mirrors on
the same disks in parallel, your disks are less happy (in one big mirror
scenario, disk's heads don't have to jump fro
dir}/${parent_}.lock\"}"
+> if [ -e "/dev/${parent}" -a ! -e "/dev/${parent}.bde" ]; then
+> echo "Configuring Disk Encryption for ${parent}."
Only this part is needed.
Committed to HEAD, MFC after 1 week. Thanks!
-
ang on boot when I use atapicam with my DVD-RW. With CD-ROM
everything is ok.
I'm able to boot and work without any problems on my DVD-RW only with
atapi DMA turned off in /boot/loader.conf:
hw.ata.atapi_dma=0
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Pawel Jakub Dawidek http://ww
uilding)
What system version are you using? If this is 5.3 you should place:
swapoff="YES"
to your /etc/rc.conf and use shutdown(8) command to reboot/turn off your
machine.
This is fixed in HEAD in much more clean way already.
--
Pawel Jakub Dawidek
too).
+> Sending it a particular signal would notify it to
+> send shutdown signals to all its compatriots in the jail etc.
I started to work on this in perforce: pjd_jailinit.
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Pawel Jakub Dawidek http://www.wheel.pl
[EMAIL PROTECTED] ht
ch against HEAD from a
minute ago:
http://people.freebsd.org/~pjd/patches/jail_2004120901.patch
I don't have time to work on this right now, so can't say if/when it'll
be committed.
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[EMAIL PROTECTED]
. You need to create the mirror on 2nd disk first, etc.
Even if you store metadata on disk (with debugflags=16), changes will
not be updated on 2nd disk, because I/O requests go to the disk provider,
not to the mirror provider.
--
Pawel Jakub Dawidek http://www.wheel.pl
On Wed, Dec 08, 2004 at 02:10:02AM +0200, Alexandr Kovalenko wrote:
+> Hello, Pawel Jakub Dawidek!
+> >
+> > This is known race, which is already fixed in HEAD. I want to commit it
+> > soon.
+>
+> Any plans on backporting it to RELENG_5 (RELENG_5_3 maybe?)?
I'
launched.
+> GEOM_MIRROR: Cannot update metadata on disk ad0s1 (error=1).
+> GEOM_MIRROR: Device vol0: provider ad0s1 disconnected.
This is known race, which is already fixed in HEAD. I want to commit it
soon.
--
Pawel Jakub Dawidek http://www.FreeBSD.org
[EMAIL PR
" disklabel(8). First 16 sectors are reserved for boot code.
+>
+> And why this does not happen with ad0s1, etc?
I think it should, only using sysinstall for this will not allocate those
sectors. Anyway, it has nothing to do with gmirror.
--
Pawel Jakub Dawidek http://www.FreeBSD.org
[EMAIL PROTECTED] http://garage.freebsd.pl
FreeBSD committer Am I Evil? Yes, I Am!
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On Fri, Nov 26, 2004 at 05:55:51PM -0200, Jo?o Carlos Mendes Luís wrote:
+> Pawel Jakub Dawidek wrote:
[...]
+> >What error do you get when you try to do this?
+>
+> Step by step:
+>
+> - The system has started with a preloaded geom_mirror:
[...]
+> - There is a
On Fri, Nov 26, 2004 at 02:56:15AM -0200, Jo?o Carlos Mendes Luís wrote:
+> Pawel Jakub Dawidek wrote:
+> >First mistake - wrong order. Create a mirror, than partition a mirror
+> >provider.
+>
+> Is this a constraint in the design? Im my point of view, geom would
+>
ion.
+> Is there any gmirror hacker around to fix these?
There is nothing to fix.
--
Pawel Jakub Dawidek http://www.FreeBSD.org
[EMAIL PROTECTED] http://garage.freebsd.pl
FreeBSD committer Am I Evil? Yes, I Am!
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> >and return an error.
+>
+> and the test for INVARIANTS is un-needed.. KASSERT only compiles to anything
+> when INVARIANTS is defined.
...and it should be '#ifdef', not '#if'.
...and the panic message should be inside ().
--
Pawel Jakub Dawidek
On Sat, Sep 18, 2004 at 02:18:55AM -0700, Don Lewis wrote:
+> On 18 Sep, Pawel Jakub Dawidek wrote:
+> > On Fri, Sep 17, 2004 at 12:37:12PM +0300, Giorgos Keramidas wrote:
+> > +> % +#ifdef INVARIANTS
+> > +> % + KASSERT(0 <= narg && narg
(args[0]),
("invalid number of syscall args"));
So if we decide to increase/decrease it someday, we don't have to remember
about this KASSERT().
--
Pawel Jakub Dawidek http://www.FreeBSD.org
[EMAIL PROTECTED] http://garage.freebsd.pl
n kern___getcwd(), but it
+> has other problems.
What problems does it have? Could you provide more details?
Was it discusses when patch for changing kern___getcwd() with
linux_getcwd() was introduced?
--
Pawel Jakub Dawidek http://www.FreeBSD.org
[EMAIL PROTECTED]
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