Re: Puzzled about turnstile's lock
On 12/18/05, rookie <[EMAIL PROTECTED]> wrote: > > > Hi hackers, > > I want to understand the current implementation of > > turnstile,and meet some questions about its locks' logicality. > > > [snip] > > It's used to lock td_contested member of struct thread structure and all > issues linked to it (as you can see in the source tree). It seems used in a > clean way. > > Attilio > > turnstile's ``ts_blocked" field is protected by both > > ``td_contested" lock and its turnstile_chain lock, but > > I think its turnstile_chain lock is enough,because we > > allways get the turnstile_chain lock before our manipulation > > on ``ts_blocked". > > If td_contested lock were needed ,reading ts_blocked is > > not protected by td_contested lock,in the kernel source, why? > > > > Thanks. > > -- > > Three passions, simple but overwhelmingly strong, have governed my life: > > the longing for love, the search for knowledge, and unbearable pity for > > the suffering of mankind. > > -Bertrand Russell > > ___ > > freebsd-hackers@freebsd.org mailing list > > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > > To unsubscribe, send any mail to " > > [EMAIL PROTECTED]" > > > > > > -- > Peace can only be achieved by understanding - A. Einstein Thanks,I think I get it now.As mentioned in arch-handbook You can protect a datum with multiple locks. Then for reading that data you simply need to have a read lock of one of the locks. However, to write to the data, you need to have a write lock of all of the locks = We also can read "ts_blocked" if only td_contested lock is held,but this way is not needed now. -- Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind. -Bertrand Russell ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: accessing NetBSD filesystem
> FFS == UFS. The FreeBSD UFS is the FFS accessed through the VFS layer, but basically the format is the same. If you want to have access, from FreeBSD, to NetBSD partitions, make sure the NetBSD partitions have been formated using FFSv2 which is the port of UFS to NetBSD. There are some differences though : no ACL support nor snapshots available there. Please use NetBSD 2.x (I use 2.1 but I got a machine running current) and format the partition to be shared using FFSv2 on NetBSD. Should work fine. FFSv2 (UFS2 in FreeBSD) is not the defautl type in NetBSD 2 for now. I have not checked in current. So if you want to use newfs from NetBSD, don't forget to ask for FFSv2 (-O 2). FFS code in NetBSD's kernel contains the options required for UFS2 support. There are superblock changes in FFSv2 (UFS2). So don't use old (as in NetBSD 1.6.x) fsck on such volumes. It is possible to do an upgrade on fsck_ffs before using FFSv2 and this works fine in 1.6.x Please read the following doc : http://sixshooter.v6.thrupoint.net/jeroen/faq.html The NetBSD's current newfs man page (http://netbsd.gw.com/cgi-bin/man-cgi?newfs++NetBSD-current) makes mention of the ACL so perhaps they're supported in NetBSD-current :) -- unzip ; strip ; touch ; grep ; finger ; mount ; fsck ; more ; yes ; fsck ; umount ; sleep ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: accessing NetBSD filesystem
On Dec 17 at 20:07, Mathieu Arnold spoke: > +-Le 17/12/2005 18:10 +0100, Hanspeter Roth a dit : > | On Dec 17 at 14:42, [EMAIL PROTECTED] spoke: > | > |> On Sat, Dec 17, 2005 at 01:20:06PM +0100, Hanspeter Roth wrote: > |> > > |> > is it possible to access Fast Filesystems from a NetBSD installation > |> > on the same disk? > |> > |> As long as they have the same Endianess, yes. You might get some > |> warnings about the disklabel, otherwise it should be fine. > | > | How can one activate the Fast Filesystem support? Is there a kernel > | module to load? Shouldn't the respective entries /dev/ad0s4* appear > | provided the NetBSD installation is in /dev/ad0s4? > > FFS == UFS. Fdisk shows sysid 165 (0xa5) for partition 3. This is where FreeBSD is installed. And Fdisk shows sysid 169 (0xa9) for partition 4. This is where NetBSD is installed. In /dev there are ad0s3 and ad0s3[a-g] but there is only a ad0s4. So how can filesystems of my NetBSD in ad0s4 be accessed? -Hanspeter ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Puzzled about turnstile's lock
> Hi hackers, > I want to understand the current implementation of > turnstile,and meet some questions about its locks' logicality. [snip] It's used to lock td_contested member of struct thread structure and all issues linked to it (as you can see in the source tree). It seems used in a clean way. Attilio turnstile's ``ts_blocked" field is protected by both > ``td_contested" lock and its turnstile_chain lock, but > I think its turnstile_chain lock is enough,because we > allways get the turnstile_chain lock before our manipulation > on ``ts_blocked". > If td_contested lock were needed ,reading ts_blocked is > not protected by td_contested lock,in the kernel source, why? > > Thanks. > -- > Three passions, simple but overwhelmingly strong, have governed my life: > the longing for love, the search for knowledge, and unbearable pity for > the suffering of mankind. > -Bertrand Russell > ___ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "[EMAIL PROTECTED]" > -- Peace can only be achieved by understanding - A. Einstein ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: accessing NetBSD filesystem
+-Le 17/12/2005 18:10 +0100, Hanspeter Roth a dit : | On Dec 17 at 14:42, [EMAIL PROTECTED] spoke: | |> On Sat, Dec 17, 2005 at 01:20:06PM +0100, Hanspeter Roth wrote: |> > |> > is it possible to access Fast Filesystems from a NetBSD installation |> > on the same disk? |> |> As long as they have the same Endianess, yes. You might get some |> warnings about the disklabel, otherwise it should be fine. | | How can one activate the Fast Filesystem support? Is there a kernel | module to load? Shouldn't the respective entries /dev/ad0s4* appear | provided the NetBSD installation is in /dev/ad0s4? FFS == UFS. -- Mathieu Arnold ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: [fbsd] Re[2]: jailctl with multiple ip per jail
Hi, Oxy, Daniel, > > yes, i know that, but what i want is to use an existing jail > > with 2ip > > not to create additional jails.. > > although i dont know if it really works, but here is what i was able > to google (check those mijail patches) :) place your questions on pjd@ > > http://garage.freebsd.pl/ pjd's mijail patce are a little bit old as they are against 5.0-CURRENT. ISTR it is usable but there were still minor problems with it which prevented the patch from being commited, but I can't pull out the details from my memory. However checking the archives would answer you for sure. Depending on what you really want to do, you may however workaround this limitation using some NAT rules. Best regards, -- Jeremie Le Hen < jeremie at le-hen dot org >< ttz at chchile dot org > ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: accessing NetBSD filesystem
On Dec 17 at 14:42, [EMAIL PROTECTED] spoke: > On Sat, Dec 17, 2005 at 01:20:06PM +0100, Hanspeter Roth wrote: > > > > is it possible to access Fast Filesystems from a NetBSD installation > > on the same disk? > > As long as they have the same Endianess, yes. You might get some > warnings about the disklabel, otherwise it should be fine. How can one activate the Fast Filesystem support? Is there a kernel module to load? Shouldn't the respective entries /dev/ad0s4* appear provided the NetBSD installation is in /dev/ad0s4? -Hanspeter ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: unable to build geom_gate
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? -- Pawel Jakub Dawidek http://www.wheel.pl [EMAIL PROTECTED] http://www.FreeBSD.org FreeBSD committer Am I Evil? Yes, I Am! pgp0Bf63j8rE3.pgp Description: PGP signature
Re: accessing NetBSD filesystem
On Sat, Dec 17, 2005 at 01:20:06PM +0100, Hanspeter Roth wrote: > > is it possible to access Fast Filesystems from a NetBSD installation > on the same disk? As long as they have the same Endianess, yes. You might get some warnings about the disklabel, otherwise it should be fine. Joerg ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
accessing NetBSD filesystem
Hello, is it possible to access Fast Filesystems from a NetBSD installation on the same disk? -Hanspeter ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: My wish list for 6.1
On Saturday 17 December 2005 03:55, Christian Brueffer wrote: > On Sat, Dec 17, 2005 at 08:55:00AM +, Allen wrote: > > On 12/17/2005 01:34:09 AM, Avleen Vig wrote: > > >On Fri, Dec 16, 2005 at 10:40:22AM -0500, Martin Cracauer wrote: > > >> > 2. SMP kernels for install. Right now we only install a UP > > > > > >kernel, for > > > > > >> > performance reasons. We should be able to package both a UP and > > > > > >SMP > > > > > >> > kernel into the release bits, and have sysinstall install both. > > > > > >It > > > > > >> > should also select the correct one for the target system and make > > > > > >that > > > > > >> > the default on boot. > > >> > > >> If people are concerned about performance, I benchmarked a 6-beta > > >> kernel SMP versus UP on a socket 939 Opteron. > > > > Must be great having boxes like that ;) You know what I'd like to see > > in the next Free BSD? A way to update security fixes without having to > > play with any source, or having to touch make world. I know the speed > > and so on makes some people like this, but I personally try getting > > people who use Windows to switch to another OS or at least show them > > something else exists, and it's hard to make someone want to use Free > > BSD when installing patches can be such a timely manner. > > > > I know about the port tool, but what I'd love to have is a tool you > > could run from the CLI or the GUI that would check for updates, and > > then ask which ones to install, similar to Swaret on Slackware. This > > way people can do the usual updates if they want, and people like me > > can show people BSD and how great it is. > > You probably haven't seen ports/security/freebsd-update yet. Actually, I've seen that and it does come close... But it didn't seem to like updating the Kernel or anything similar to the base system in the time I spent with it. Free BSD has probably one of the best methods of installing new packages with pkg_add, and pkg_add -r for grabbing them off the internet but for updates it could use some work. It won't stop me from buying Free BSD things, but it does make showing new computer users the OS a but harder. OT: If anyone wants a person to couge, the Free BSD boxers are VERY high quality and, it must be said, a pair of boxers any BOFH would wear. They look great with my Free BSD TeeShirt and Laptop covered in BSD stickers. :) > - Christian -Allen ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: My wish list for 6.1
On Sat, Dec 17, 2005 at 08:55:00AM +, Allen wrote: > On 12/17/2005 01:34:09 AM, Avleen Vig wrote: > >On Fri, Dec 16, 2005 at 10:40:22AM -0500, Martin Cracauer wrote: > >> > 2. SMP kernels for install. Right now we only install a UP > >kernel, for > >> > performance reasons. We should be able to package both a UP and > >SMP > >> > kernel into the release bits, and have sysinstall install both. > >It > >> > should also select the correct one for the target system and make > >that > >> > the default on boot. > >> > >> If people are concerned about performance, I benchmarked a 6-beta > >> kernel SMP versus UP on a socket 939 Opteron. > > Must be great having boxes like that ;) You know what I'd like to see > in the next Free BSD? A way to update security fixes without having to > play with any source, or having to touch make world. I know the speed > and so on makes some people like this, but I personally try getting > people who use Windows to switch to another OS or at least show them > something else exists, and it's hard to make someone want to use Free > BSD when installing patches can be such a timely manner. > > I know about the port tool, but what I'd love to have is a tool you > could run from the CLI or the GUI that would check for updates, and > then ask which ones to install, similar to Swaret on Slackware. This > way people can do the usual updates if they want, and people like me > can show people BSD and how great it is. > You probably haven't seen ports/security/freebsd-update yet. See http://www.daemonology.net/freebsd-update/ for more information. - Christian -- Christian Brueffer [EMAIL PROTECTED] [EMAIL PROTECTED] GPG Key: http://people.freebsd.org/~brueffer/brueffer.key.asc GPG Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D pgptoAmSGhjWd.pgp Description: PGP signature
Re: My wish list for 6.1
On 12/17/2005 01:34:09 AM, Avleen Vig wrote: On Fri, Dec 16, 2005 at 10:40:22AM -0500, Martin Cracauer wrote: > > 2. SMP kernels for install. Right now we only install a UP kernel, for > > performance reasons. We should be able to package both a UP and SMP > > kernel into the release bits, and have sysinstall install both. It > > should also select the correct one for the target system and make that > > the default on boot. > > If people are concerned about performance, I benchmarked a 6-beta > kernel SMP versus UP on a socket 939 Opteron. Must be great having boxes like that ;) You know what I'd like to see in the next Free BSD? A way to update security fixes without having to play with any source, or having to touch make world. I know the speed and so on makes some people like this, but I personally try getting people who use Windows to switch to another OS or at least show them something else exists, and it's hard to make someone want to use Free BSD when installing patches can be such a timely manner. I know about the port tool, but what I'd love to have is a tool you could run from the CLI or the GUI that would check for updates, and then ask which ones to install, similar to Swaret on Slackware. This way people can do the usual updates if they want, and people like me can show people BSD and how great it is. If those results are accurate, there's no real reason not to just use an SMP kernel on default install? ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers- [EMAIL PROTECTED]" ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Puzzled about turnstile's lock
Hi hackers, I want to understand the current implementation of turnstile,and meet some questions about its locks' logicality. turnstile's ``ts_blocked" field is protected by both ``td_contested" lock and its turnstile_chain lock, but I think its turnstile_chain lock is enough,because we allways get the turnstile_chain lock before our manipulation on ``ts_blocked". If td_contested lock were needed ,reading ts_blocked is not protected by td_contested lock,in the kernel source, why? Thanks. -- Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind. -Bertrand Russell ___ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: My wish list for 6.1
On Fri, Dec 16, 2005 at 10:34:09PM -0800, Avleen Vig wrote: > On Fri, Dec 16, 2005 at 10:40:22AM -0500, Martin Cracauer wrote: > > > 2. SMP kernels for install. Right now we only install a UP kernel, for > > > performance reasons. We should be able to package both a UP and SMP > > > kernel into the release bits, and have sysinstall install both. It > > > should also select the correct one for the target system and make that > > > the default on boot. > > > > If people are concerned about performance, I benchmarked a 6-beta > > kernel SMP versus UP on a socket 939 Opteron. > > If those results are accurate, there's no real reason not to just use an > SMP kernel on default install? Just because it didn't manifest on this workload, doesn't mean it doesn't on others. I think this is the point :) Kris pgpqGMYb21vAl.pgp Description: PGP signature
