seeking help to rewrite the msdos filesystem
Hello, I believe that everybody here knows about the "slow msdosfs" problem, that is AFAIK caused by implementation without clustering. For me this is very annoying, because I use digital camera, and ZIP drive, and FAT on both of them. Speed is about 10 times lower than it could be.. I would like to rewrite the msdosfs driver to use clustering (in fact, I have chosen it as school project, so I have to do it anyway :). Is there anybody, who could spend few minutes and write me some information about how these filesystems are implemented, what should I read first, and what steps to follow to implement clustering ? I am ready to do the hard work :) Thanks Tomas Pluskal To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Greetings
From: Kuzo M. Seseko Alternative Email Address: [EMAIL PROTECTED] My name is Kuzo Mobutu Seseko, the daughter of the late President of Republic of Zaire, now living in exile in South Africa. The circumstances that led to my living in South Africa at the moment cannot be new to you , I know you must know the history of my family. However , during the days of my fathers reign we were into solid minerals exploration and mining which was the soul base of our family business, mostly diamond and gold. But unfortunately, before my father passed on, he was on exile in Europe which made it impossible for us to organize our businesses especially mining before the political hostility which saw him out of office began. Last year a security company in our country wrote me informing me of a deposit made by my father in my name which is still with them. I intended leaving the deposit with them sequel to my return home so that I can fall on that to start up a business ,but unfortunately, the rebel hostilities at home which have refused to stop up till this moment has made me to think otherwise. Hence I am considering asking the security company to transfer the sum to an oversea country with a stable economy and favorable political condition, so that I can find an indigenous business man / investor in that country to work with in partnership and invest this money. I know your country is an advanced democracy with a more stable economy than that of African countries. Hence I would want us to seek how to invest this sum agreeing on a working percentage.However due to my living status here in South Africa I would want you to keep this offer confidential. Get back to me suggesting what we are to do, while I will furnish you with my contact telephone numbers and fax in South Africa and that of my lawyers. I wish you strength. K. Seseko. _ Gagne une PS2 ! Envoie un SMS avec le code PS au 61166 (0,35 Hors coût du SMS)
boot from USB ZIP or USB HDD
Hi! Is there any way to boot FreeBSD from USB flash device which can be detected as 'usb zip' by BIOS? I have EasyDisk 32M flash device, which can be formatted under Windows as bootable, and my motherboard could boot Windows from it, same time writing standart FreeBSD boot block and label as described in handbook (fine for my HDD) results in displaying '-' sign at the first moment of system boot, following by hangup. I should buy USB HDD capable flash device (unfortunately my EasyDisk support only USB ZIP) and try again, or it is completely impossible to boot FreeBSD from usb flash? Yours, Anton L. Vinokurov, CCNA [EMAIL PROTECTED] NeTAMS Development Team To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: boot from USB ZIP or USB HDD
On Tue, Nov 12, 2002 at 06:10:08PM +0300, Anton Vinokurov wrote: > Hi! > > Is there any way to boot FreeBSD from USB flash device which can be detected > as 'usb zip' by BIOS? > > I have EasyDisk 32M flash device, which can be formatted under Windows as > bootable, and my motherboard could boot Windows from it, same time writing > standart FreeBSD boot block and label as described in handbook (fine for my > HDD) results in displaying '-' sign at the first moment of system boot, > following by hangup. > > I should buy USB HDD capable flash device (unfortunately my EasyDisk support > only USB ZIP) and try again, or it is completely impossible to boot FreeBSD > from usb flash? As long as the BIOS serves it as a normal disk there is no reason why FreeBSB couldn't boot from it. You already wrote that this is true. As long as FreeBSD support the drive in general there is not reason why you can't have the / filesystem on it. If both points hold true there is no difference in having a traditional connected disk. -- B.Walter COSMO-Project http://www.cosmo-project.de [EMAIL PROTECTED] Usergroup [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: boot from USB ZIP or USB HDD
My motherboard (VIA Epia) support booting from USB-FDD, USB-ZIP, USB-HDD and USB-CDROM. I have no idea how it works and what the difference between all this methods. My USB flash device could be formatted as "bootable" under Windows as USB ZIP device, and when I set "boot from USB ZIP" in BIOS - all is fine, and I see "a:>" DOS prompt. But setting "USB HDD or USB HDD or USB CDROM" as boot device at BIOS fails - boot block cannot be found. The problem is that FreeBSD boot block (boot0, boot1 or boot2 - I don't know) assumed that booting is performed from HDD device, but it is untrue. Maybe I should use different boot blocks? Is it possible to boot FreeBSD form ZIP device (seen by BIOS as ZIP, not HDD or FDD)? I know that we have different boot block to boot from CD (/boot/cdboot) and maybe we should have something like /boot/zipboot? Anton L. Vinokurov, CCNA [EMAIL PROTECTED] NeTAMS Development Team > USB booting support is down to two things: BIOS and kernel support. > > If the BIOS can probe and boot from it in a similar way to how one might > boot from an El Torito CDROM, then the BIOS has done its bit. > > Going further, some BIOSes support making these devices visible to DOS, I > assume - I don't have any first hand experience of this. > > The problem here is that you won't even get as far as the loader *unless* > the BIOS is able to interpret the USB device as a hard disk drive. If the > BIOS emulates a fixed disk device in a traditional sense then standard > boot code will work fine. > > However, if its USB boot emulation doesn't extend to the BIOS > interrupts used by the standard FreeBSD boot sector, you won't even get > as far as the loader. > > Once the kernel has started to boot, it will need to have a disk driver which > can understand the disk it's booting from, otherwise it will fail to mount > root. > > I don't have time to do further research on this right now but I suggest > you contact your BIOS vendor for information, or research on their web site. > > BMS > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
how to control tagged queueing?
I'm experimenting with the effects of SCSI tagged queueing on file system performance. Is there any kind of global toggle somewhere in the kernel to turn tagged queueing on and off, and/or knob to limit the number of outstanding tags? Tagged queue management all seems to be done at the device level, and I haven't found hooks for controlling it at a higher level (but I thought I'd ask before running off to write something). I'm running 4.6.2p4, in case things have changed. (If there's a nicer interface in 4.7, I'll install it immediately!) Thanks, -Dan To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: how to control tagged queueing?
On Tue, 12 Nov 2002, Dan Ellard wrote: > I'm experimenting with the effects of SCSI tagged queueing on file > system performance. Is there any kind of global toggle somewhere in > the kernel to turn tagged queueing on and off, and/or knob to limit > the number of outstanding tags? Tagged queue management all seems > to be done at the device level, and I haven't found hooks for > controlling it at a higher level (but I thought I'd ask before > running off to write something). > > I'm running 4.6.2p4, in case things have changed. (If there's a > nicer interface in 4.7, I'll install it immediately!) man camcontrol Specifically: camcontrol tags [device id] [generic args] [-N tags] [-q] [-v] camcontrol negotiate [device id] [generic args] [-T enable|disable] -- Chris Dillon - cdillon(at)wolves.k12.mo.us FreeBSD: The fastest and most stable server OS on the planet - Available for IA32 (Intel x86) and Alpha architectures - IA64, PowerPC, UltraSPARC, ARM, and S/390 under development - http://www.freebsd.org No trees were harmed in the composition of this message, although some electrons were mildly inconvenienced. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Interesting
FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA - This email was sent using FREE Catholic Online Webmail. Please tell your family, friends and children about COL Webmail! http://webmail.catholic.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Interesting
FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA - This email was sent using FREE Catholic Online Webmail. Please tell your family, friends and children about COL Webmail! http://webmail.catholic.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Interesting
FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA - This email was sent using FREE Catholic Online Webmail. Please tell your family, friends and children about COL Webmail! http://webmail.catholic.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Interesting
FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA FUCK SCOTT LONG AND FUCK BILL FUMEROLA - This email was sent using FREE Catholic Online Webmail. Please tell your family, friends and children about COL Webmail! http://webmail.catholic.org/ To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Network connection problem: SIS, miibus
Hi all! Did try questions, without any reply, so I'm trying here... I have a friend who decided to try FreeBSD 4.6.2 and it works just fine except one thing, his connection to the internet. He has a sis network card, which is compiled into the kernel, with miibus that is required. He gets a connection just fine, for about half a minute, then it doesn't work anymore, with long periods of "wait" time. A ping to an address works perfectly after a reboot, next minute a ping to the same address does not work. Also, issuing kldstat, the miibus is there, which it should not, as it's compiled into the kernel. If I recall correct, it's not there when it's first working, but later it is, when not working. There is also an arp message, that looks as if some change of MAC- address has taken place, which seem to be strange. One last thing, ifconfig says the sis is using full-duplex. Is that ok, if maybe not the other side can handle full-duplex? I can provide more information if needed to help me solve this pro- blem, so that he can start using FreeBSD full time. Thanks in advance for any reply! Best regards, Paul To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shrinking /(s)bin: A Proposal
My spouse had the problem of creating a bootable copy of A/UX on a single floppy. She decided to write a "doitall" program that had functionality from a number of small commands. This amortized the overhead a great deal. A similar approach could be used for /(s)bin: lump several programs together into a single binary, but give the binary links for each of the original names (and have the program respond according to the name used, ala vi/ex). My general reaction, however, is that this issue (shrinking sbin) is not worth trashing the software engineering of piles of commands. -r -- email: [EMAIL PROTECTED]; phone: +1 650-873-7841 http://www.cfcl.com/rdm- my home page, resume, etc. http://www.cfcl.com/Meta - The FreeBSD Browser, Meta Project, etc. http://www.ptf.com/dossier - Prime Time Freeware's DOSSIER series http://www.ptf.com/tdc - Prime Time Freeware's Darwin Collection To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shrinking /(s)bin: A Proposal
Rich Morin wrote: > > My spouse had the problem of creating a bootable copy of A/UX on a > single floppy. She decided to write a "doitall" program that had > functionality from a number of small commands. This amortized the > overhead a great deal. > > A similar approach could be used for /(s)bin: lump several programs > together into a single binary, but give the binary links for each > of the original names (and have the program respond according to > the name used, ala vi/ex). > > My general reaction, however, is that this issue (shrinking sbin) > is not worth trashing the software engineering of piles of commands. > > -r > -- > email: [EMAIL PROTECTED]; phone: +1 650-873-7841 > http://www.cfcl.com/rdm- my home page, resume, etc. > http://www.cfcl.com/Meta - The FreeBSD Browser, Meta Project, etc. > http://www.ptf.com/dossier - Prime Time Freeware's DOSSIER series > http://www.ptf.com/tdc - Prime Time Freeware's Darwin Collection > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message If you're seriously interested in this, take a look at busybox. http://busybox.lineo.org Not sure how compatible the licensing is for FreeBSD base software though. -- - Justin Wojdacki [EMAIL PROTECTED] (408) 350-5032 Communications Processors Group -- Analog Devices To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
CD audio interpolation
Greetings, If I read /dev/acd0t1, will the CD-ROM interpolate over scratches and stuff? Is there any way of identifying them? thanks, sh To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shrinking /(s)bin: A Proposal
On Tuesday 12 November 2002 02:34 pm, Justin Wojdacki wrote: > Rich Morin wrote: > > My spouse had the problem of creating a bootable copy of A/UX on a > > single floppy. She decided to write a "doitall" program that had > > functionality from a number of small commands. This amortized the > > overhead a great deal. > > > > A similar approach could be used for /(s)bin: lump several programs > > together into a single binary, but give the binary links for each > > of the original names (and have the program respond according to > > the name used, ala vi/ex). > > > > My general reaction, however, is that this issue (shrinking sbin) > > is not worth trashing the software engineering of piles of commands. > > > > -r > > -- > > email: [EMAIL PROTECTED]; phone: +1 650-873-7841 > > http://www.cfcl.com/rdm- my home page, resume, etc. > > http://www.cfcl.com/Meta - The FreeBSD Browser, Meta Project, etc. > > http://www.ptf.com/dossier - Prime Time Freeware's DOSSIER series > > http://www.ptf.com/tdc - Prime Time Freeware's Darwin Collection > > > > To Unsubscribe: send mail to [EMAIL PROTECTED] > > with "unsubscribe freebsd-hackers" in the body of the message > > If you're seriously interested in this, take a look at busybox. > > http://busybox.lineo.org > > Not sure how compatible the licensing is for FreeBSD base software > though. Make that http://www.busybox.net/ Its GPL. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shrinking /(s)bin: A Proposal
The same approach is used in creating sysinstall related binaries or in PicoBSD. The utility is called crunchgen(1). The examples section even features ways to do exactly that with /sbin. A. On Tue Nov 12, 2002 at 11:32:26AM -0800, Rich Morin wrote: > My spouse had the problem of creating a bootable copy of A/UX on a > single floppy. She decided to write a "doitall" program that had > functionality from a number of small commands. This amortized the > overhead a great deal. > > A similar approach could be used for /(s)bin: lump several programs > together into a single binary, but give the binary links for each > of the original names (and have the program respond according to > the name used, ala vi/ex). > > My general reaction, however, is that this issue (shrinking sbin) > is not worth trashing the software engineering of piles of commands. > > -r > -- > email: [EMAIL PROTECTED]; phone: +1 650-873-7841 > http://www.cfcl.com/rdm- my home page, resume, etc. > http://www.cfcl.com/Meta - The FreeBSD Browser, Meta Project, etc. > http://www.ptf.com/dossier - Prime Time Freeware's DOSSIER series > http://www.ptf.com/tdc - Prime Time Freeware's Darwin Collection > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-hackers" in the body of the message > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
A quick gdb help
I need to set a variable value in gdb: (gdb) set xyz = 1 <- works (gdb) set i = 1<- syntax error near '1' I guess i must have special meaning in gdb. But what if I insist setting it, is there a way? Thanks. -Zhihui To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: A quick gdb help
On Tue, Nov 12, 2002 at 02:56:10PM -0500, Zhihui Zhang wrote: > > I need to set a variable value in gdb: > > (gdb) set xyz = 1 <- works > (gdb) set i = 1<- syntax error near '1' > > I guess i must have special meaning in gdb. But what if I insist setting > it, is there a way? Thanks. 'i' is shorthand (or an alias) for the info command. Not sure if you can effectively "unalias" i. -- Chuck Tuffli Agilent Technologies, Storage and Networking To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: A quick gdb help
On Tuesday 12 November 2002 02:56 pm, Zhihui Zhang wrote: > I need to set a variable value in gdb: > > (gdb) set xyz = 1 <- works > (gdb) set i = 1<- syntax error near '1' > > I guess i must have special meaning in gdb. But what if I insist setting > it, is there a way? Thanks. This works: set (i) = 1 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: A quick gdb help
On Tuesday 12 November 2002 03:03 pm, Chuck Tuffli wrote: > On Tue, Nov 12, 2002 at 02:56:10PM -0500, Zhihui Zhang wrote: > > I need to set a variable value in gdb: > > > > (gdb) set xyz = 1 <- works > > (gdb) set i = 1<- syntax error near '1' > > > > I guess i must have special meaning in gdb. But what if I insist setting > > it, is there a way? Thanks. > > 'i' is shorthand (or an alias) for the info command. Not sure if you > can effectively "unalias" i. Actually its short for set input-radix (gdb) help set i Set default input radix for entering numbers. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
RE: Network connection problem: SIS, miibus
> From: [EMAIL PROTECTED] > [mailto:owner-freebsd-hackers@;FreeBSD.ORG]On Behalf Of Paul Everlund > Sent: Tuesday, November 12, 2002 10:42 AM > To: [EMAIL PROTECTED] > Subject: Network connection problem: SIS, miibus > > > Hi all! > > Did try questions, without any reply, so I'm trying here... > > I have a friend who decided to try FreeBSD 4.6.2 and it works just > fine except one thing, his connection to the internet. > > He has a sis network card, which is compiled into the kernel, with > miibus that is required. > Could you post the output from the `pciconf -l | grep sis' command? I have a couple of machines with integrated sis ethernet controllers (sis962 south bridge), and the if_sis driver would not work without some tweaking. If your friend is using something similar, I could send a patch for him to try. -lq To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: A quick gdb help
I tend to avoid using "set", and use "print", with an assignment expression: eg "print i = 1" or "p i = 1". It removes any namespace conflicts between variables in the target process and gdb settings. -- Peter. > I need to set a variable value in gdb: > > (gdb) set xyz = 1 <- works > (gdb) set i = 1<- syntax error near '1' > > I guess i must have special meaning in gdb. But what if I insist setting > it, is there a way? Thanks. > > -Zhihui To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shrinking /(s)bin: A Proposal
In message , Rich Morin writes: >My spouse had the problem of creating a bootable copy of A/UX on a >single floppy. She decided to write a "doitall" program that had >functionality from a number of small commands. This amortized the >overhead a great deal. man crunchgen. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: how to control tagged queueing?
On Tue, 12 Nov 2002, Chris Dillon wrote: > > I'm experimenting with the effects of SCSI tagged queueing on file > > system performance. Is there any kind of global toggle somewhere in > > the kernel to turn tagged queueing on and off, and/or knob to limit > > the number of outstanding tags? Tagged queue management all seems > > to be done at the device level, and I haven't found hooks for > > controlling it at a higher level (but I thought I'd ask before > > running off to write something). > > > > I'm running 4.6.2p4, in case things have changed. (If there's a > > nicer interface in 4.7, I'll install it immediately!) > > man camcontrol > > Specifically: > > camcontrol tags [device id] [generic args] [-N tags] [-q] [-v] > camcontrol negotiate [device id] [generic args] [-T enable|disable] Thanks, that's exactly what I needed. And thanks to the other people who have responded! -Dan To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: [hackers] Re: Netgraph could be a router also.
David Gilbert wrote: > > "Terry" == Terry Lambert <[EMAIL PROTECTED]> writes: > Terry> By "it", I guess you mean "FreeBSD"? > Terry> What are your performance goals? > > Right now, I'd like to see 500 to 600 kpps. > > Terry> Where is FreeBSD relative to those goals, right now, without > Terry> you doing anything to it? > > Without any work, we got 75 kpps. > > Terry> Where is FreeBSD relative to those goals, right now, if you > Terry> tune it very carefully, but don't hack any code? > > With a few patches, including polling and some tuning, we got 150 to > 200 kpps. > > Note that we've been focusing on pps, not Mbs. With 100M cards (what > we're currently using) we want to focus on getting the routing speed > up. These stats are moderately meaningless. The problem is that they don't tell me about where you are measuring your packets-per-second rate, or how it's being measured, or whether the interrupt or processing load is high enough to trigger livelock, or not, or the size of the packet. And is that a unidirectional or bidirectional rate? UDP? I guess I could guess with 200kpps: 100mbit/s / 200kp/s = 500 bytes per packet ...and that an absolute top end. Somehow, I think the packets are smaller. Bidirectionally, not FDX, we're talking 250 bytes per packet maximum theoretical throughput. > One of the largest problems we've found with GigE adapters on FreeBSD > is that their pps ability (never mind the volume of data) is less than > half that of the fxp driver. I've never found this to be the case, using the right hardware, and a combination of hard and soft interrupt coelescing. You'd have to tell me what hardware you are using for me to be able to stare at the driver. My personal hardware recommendation in this regard would be the Tigon III, assuming that the packet size was 1/3 to 1/6th the MTU, as you implied by your numbers. Personnally, I would *NOT* use polling, particularly if you were using user space processing with Zebra, since any load at all would push you to the point of starving the user space process for CPU time; it's not really worth it (IMO) to do the work necessary to go to weighted fair share queueing for scheduling, if it came to that. > But we havn't tested every driver. The Intel GigE cards were > especially disapointing. Have you tried the Tigon III, with Bill Paul's driver? If so, did you include the polling patches that I made against the if_ti driver, and posted to -net, when you tested it? Do you have enough control over the load clients that you can ramp the load up until *just before* the performance starts to tank? If so, what's the high point of the curve on the Gigabit, before it tanks (and it will)? > Terry> If you are willing to significantly modify FreeBSD, and address > Terry> all of the latency issues, a multiport Gigabit router is > Terry> doable, but you haven't even mentioned the most important > Terry> aspect of any high speed networking system, so it's not likely > Terry> that you're going to be able to do this effectively, just > Terry> approaching it blind. > > We've been looking at the click stuff... and it seems interesting. I > like some aspects of the netgraph interface better and may be paying > for an ng_route to be created shortly. Frankly, I am not significantly impressed by the Click and other code. If all you are doing is routing, and everything runds in a fixed amount of time at interrupt, it's fine, but it quickly gets less fine, as you move away from that setup. If you are running Zebra, you really don't want Click. If you can gather enough statistics to graph the drop-off curve, so it's possible to see why the problems you are seeing are happening, then I can probably provide you some patches that will increase performance for you. It's important to know if you are livelocking, or if you are running out of mbufs, or if it's a latency issue you are facing, or if we are talking about context switch overhead, instead, etc.. -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: [hackers] Re: Netgraph could be a router also.
On Tue, 12 Nov 2002, Terry Lambert wrote: > 100mbit/s / 200kp/s = 500 bytes per packet > > ...and that an absolute top end. Somehow, I think the packets are > smaller. Just for the record... Measurement studies[1] (and NLANR traces[2]) suggest that the average packet size on the Internet is between 400-500 bytes, depending on the backbone link you're monitoring. According to the same studies/traces, packet size distribution can be approximated relatively accurately by a tri-modal distribution, with about 40% ~40 to 44-byte packets, 20% ~572 to 576-byte packets, and 20% 1500-byte packets. The 20 remaining percent are more or less uniformly distributed between 40 and 4000 bytes. This is all of course a rather crude approximation (which is not helped by the fact I'm quoting these numbers off the top of my head - I'll post a correction if I'm blatantly wrong, but I think my memory still works ok), but it may be helpful to get a rough idea of the 'typical' packet size one can observe. The point is, 200 Kpps should be relatively close to what you should see on a 100 Mbps FDX link. [1] http://www.caida.org/outreach/resources/learn/packetsizes [2] http://pma.nlanr.net/PMA/ Best, -- Nicolas Christin Ph.D. Candidate, University of Virginia, Computer Science http://www.cs.virginia.edu/~nicolas To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: CD audio interpolation
On Wed, 2002-11-13 at 06:14, Sean Hamilton wrote: > If I read /dev/acd0t1, will the CD-ROM interpolate over scratches and stuff? > Is there any way of identifying them? I believe it's basically up to your CD ROM drive - all the acd driver does is ask it for track info, I don't believe it does anything special to the data. FWIW I use dd if=/dev/acd0tX bs=2352 to make my mp3's and it has never made a bad one yet (with a 52x Mitsubishi and a 24x TEAC laptop CDROM). Admittedly all my CD's are basically archival and once I rip them I almost never play them again, but IMHO new drive are perfectly capable of reading audio without too much hassle. -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 9A8C 569F 685A D928 5140 AE4B 319B 41F4 5D17 FDD5 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
miniBSD buids and runs ok on Advantek WEB 2143 box
Manuel, As the subject says, we built miniBSD following your scripts etc to make a ipf firewall box. We will be also using the same platform as a ipf / ppp dialer for our remote sites. (freeing up some desktops that are currently being used ;-) ) http://www.advantech.com.tw/eplatforms/web2143.asp Thanks for the guiding efforts! Murray Taylor Special Projects Engineer - Bytecraft Systems & Entertainment Phone: 61 3 8710 2555 Fax: 61 3 8710 2599 Direct: 61 3 9238 4275 Mobile: 61 0417 319 256 Email: [EMAIL PROTECTED] or visit us on the web http://www.bytecraftsystems.com http://www.bytecraftentertainment.com This Email has been scanned for Viruses by MailMarshal an automated gateway email virus scanner. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Shared files within a jail
After much searching and contemplation, I've decided to ask the question directly: I'm implementing a jail server, which will provide a very limited set of resources (Apache/MySQL/PHP). Setup is going well, however I've run into a little snag that I hope can be worked out. I want to allow the users the ability to compile and use their own instances of Apache and MySQL from within the jail. But instead of duplicating the basic system libs and bins, I'd like to maintain a single repository of this, which can then be read-only from within the jail. Options: -- Symlinks won't work because of the chroot. -- Mounts from within the jail aren't allowed, plus a single partition can't be mounted multiple times, AFAIK. -- I don't have NFS setup, and I would like to avoid it as much as possible. -- mount_null seems to be the answer, however the warning at the end of the man page is scary. Is there any combination of these (or anything I'm forgetting) that could help me here? Is mount_null stable? I've had an account on a jail server which had /shared visible within the jail, and symlinks to /bin, /usr/lib and such. I'm not sure how this was actually implemented, and I'd be interested if anyone has seen or heard of any solutions to this type of problem. Best, = Hans Zaunere New York PHP http://nyphp.org [EMAIL PROTECTED] __ Do you Yahoo!? U2 on LAUNCH - Exclusive greatest hits videos http://launch.yahoo.com/u2 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shared files within a jail
On Wed, 2002-11-13 at 13:38, Hans Zaunere wrote: > -- Symlinks won't work because of the chroot. > -- Mounts from within the jail aren't allowed, plus a single partition > can't be mounted multiple times, AFAIK. > -- I don't have NFS setup, and I would like to avoid it as much as > possible. > -- mount_null seems to be the answer, however the warning at the end of > the man page is scary. > > Is there any combination of these (or anything I'm forgetting) that > could help me here? Is mount_null stable? > > I've had an account on a jail server which had /shared visible within > the jail, and symlinks to /bin, /usr/lib and such. I'm not sure how > this was actually implemented, and I'd be interested if anyone has seen > or heard of any solutions to this type of problem. You should be able to use hardlinks for this sort of thing. Make sure you mark them immutable though, otherwise someone in a jail could compromise other users of those libraries [in another jail]. -- > > Daniel O'Connor software and network engineer > for Genesis Software - http://www.gsoft.com.au > "The nice thing about standards is that there > are so many of them to choose from." > -- Andrew Tanenbaum > GPG Fingerprint - 9A8C 569F 685A D928 5140 AE4B 319B 41F4 5D17 FDD5 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shared files within a jail
> > I've had an account on a jail server which had /shared visible > > within the jail, and symlinks to /bin, /usr/lib and such. I'm not > > sure how this was actually implemented, and I'd be interested if > > anyone has seen or heard of any solutions to this type of problem. > > You should be able to use hardlinks for this sort of thing. Two issues arise: 1) I'd like to be able to link an entire directory for convience and maintenance purposes. 2) Cross partition links not possible. Number 2 is really the kicker, as far as I can tell. Is there some way around this? Hans __ Do you Yahoo!? U2 on LAUNCH - Exclusive greatest hits videos http://launch.yahoo.com/u2 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shared files within a jail
On Wed, 2002-11-13 at 14:17, Hans Zaunere wrote: > Two issues arise: > 1) I'd like to be able to link an entire directory for convience and > maintenance purposes. Write a script :) > 2) Cross partition links not possible. > > Number 2 is really the kicker, as far as I can tell. Is there some way > around this? Don't think so, you're stuck :( -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 9A8C 569F 685A D928 5140 AE4B 319B 41F4 5D17 FDD5 To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shared files within a jail
Try using null mounts. The warning is in there because making the null mount code work is a real hack and the authors aren't entirely sure that everything's gotten covered. That said, use of a null mount is certainly a lot safer if the stuff behind the mount is mostly static. Note that you can also use localhost NFS mounts to replicate pieces of filesystems within jails, but you need to remember that the kernel will wind up caching multiple copies of the data for these two cases and that NFS has file locking issues. Finally, keep in mind that disk space these days is quite cheap. Duplicating the data is not as bad a way to go as you might think, and it allows you to incrementally upgrade each jail. It may suffice to use the null mount trick *only* for the big binaries and libraries that you really want to share, and it may be reasonable to use softlinks to accomplish it, like this: JAIL FILESYSTEM: / complete copy of / /usrcomplete copy of /usr /mntnull mount of the master / /mnt/usrnull mount of the master /usr And then use softlinks to enforce binary sharing by default: /bin/* instead of the binaries make softlinks to /mnt/bin /usr/bin/* ... softlinks to /mnt/usr/bin /usr/lib/* ... softlinks to /mnt/usr/lib /usr/local/lib/*... softlinks to /mnt/usr/local/lib /usr/local/bin/*... softlinks to /mnt/usr/local/bin So that way the user can remove the softlink and install his own copy of the software if he wishes, and mess with anything else as well. That's just an example. There are a thousand ways to do it. -Matt Matthew Dillon <[EMAIL PROTECTED]> To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: GDB & Linux binaries.
On Sun, Nov 10, 2002 at 07:44:21PM -0700, [EMAIL PROTECTED] wrote: > > > I'm guessing this is because the linux libc library file is in > > > /usr/compat/linux/lib, how do I get GDB to use it instead? Or is it even > > > possible. > > That's interesting. I already asked similar question here, on freebsd-hackers@, > but was immediately sent to freebsd-questions@, where I didn't get any answer. :) freebsd-emulation@ is the place to go, really. > > I believe you can install the linux_devtools* port and get gdb for > > Linux. > > There is also linux_kdump which groks ktrace output from linux binaries. > I tried Linux 'gdb' - it doesn't break on breakpoints; is says that ptrace() > syscall is not implemented. Linux RedHAT 7.2 emulation + 'linux_devtools'. You're running -stable, right? See i386/33300. Gordon stacked it on my plate. I'm very much focussed on getting FreeBSD/ia64 in a releasable state so I might not get to it soon, but it'll be done... eventually :-) -- Marcel Moolenaar USPA: A-39004 [EMAIL PROTECTED] To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shared files within a jail
> Try using null mounts. The warning is in there because making the > null mount code work is a real hack and the authors aren't entirely > sure that everything's gotten covered. That said, use of a null mount > is certainly a lot safer if the stuff behind the mount is mostly > static. null mounts, in -stable at least, are broken for this purpose. on connection, sshd revoke()s some device- its pty, i assume, and when this hits the nullfs layer a null pointer is dereferenced. if i had vfs-clue i'd have fixed it when i found the panic about two weeks ago. when i overcame this by putting the jails /dev on an nfs loopback, i managed to produce two more different panics. -cg To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shared files within a jail
:> is certainly a lot safer if the stuff behind the mount is mostly :> static. : :null mounts, in -stable at least, are broken for this purpose. on :connection, sshd revoke()s some device- its pty, i assume, and when this :hits the nullfs layer a null pointer is dereferenced. if i had vfs-clue i'd :have fixed it when i found the panic about two weeks ago. when i overcame :this by putting the jails /dev on an nfs loopback, i managed to produce two :more different panics. : :-cg Well, that sounds like an addressable bug. But I don't see any paricular reason why it would be a show-stopper. /dev doesn't take up any significant amount of space, just copy it for each jail. -Matt To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shared files within a jail
Hans Zaunere wrote: > I want to allow the users the ability to compile and use their own > instances of Apache and MySQL from within the jail. But instead of > duplicating the basic system libs and bins, I'd like to maintain a > single repository of this, which can then be read-only from within the > jail. Options: > > -- Symlinks won't work because of the chroot. > -- Mounts from within the jail aren't allowed, plus a single partition > can't be mounted multiple times, AFAIK. > -- I don't have NFS setup, and I would like to avoid it as much as > possible. > -- mount_null seems to be the answer, however the warning at the end of > the man page is scary. It's less scary, since you will be mounting read-only. -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: A quick gdb help
Zhihui Zhang <[EMAIL PROTECTED]> writes: > (gdb) set xyz = 1 <- works > (gdb) set i = 1<- syntax error near '1' > > I guess i must have special meaning in gdb. But what if I insist setting > it, is there a way? Thanks. Use `set var[iable] i = 1' or `p[rint] i = 1'. More information in `Assignment to variables' node at `info gdb'. -- Alexander Pohoyda <[EMAIL PROTECTED]> To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shared files within a jail
Matthew Dillon wrote: > Try using null mounts. The warning is in there because making the > null mount code work is a real hack and the authors aren't entirely > sure that everything's gotten covered. That said, use of a null mount > is certainly a lot safer if the stuff behind the mount is mostly > static. The problem is in the VM object alias code. Specifically, the getpages/putpages have to be implemented in terms of read/write, so that there are not two vm_object_t's that refer to the same data, since there is no "upcall" to notify of changes in a lower layer, and therefore guarantee coherency. This basically means that the "pig tricks" that most people who don't know any better do, like using both mmap() and file I/O against the same file, require explicit calls to msync() to ensure cache coherency. Most people who write code these days don't expect to have to call msync, and even if they expect to, they're not entirely sure of when/why/how to call it. This is the same reason that dropping the getpages/putpages VOPs from the SMBFS implementation "fixes" the "cp" problem (by making "cp" dork like "dd", by converting the getpages() request into a read() request, instead). But doing that introduces the same cache coherency problems, again. You can basically ignore this problem entirely, since your mounts are going to be read-only, and you aren't going to have to worry about someone dirtying pages through a nullfs mount. > Note that you can also use localhost NFS mounts to replicate pieces of > filesystems within jails, but you need to remember that the kernel > will wind up caching multiple copies of the data for these two cases > and that NFS has file locking issues. Yes. This will also work, if the man page for nullfs turns out to be "too scary". ;^). Same coherency issues. > Finally, keep in mind that disk space these days is quite cheap. > Duplicating the data is not as bad a way to go as you might think, and > it allows you to incrementally upgrade each jail. It may suffice to use > the null mount trick *only* for the big binaries and libraries that you > really want to share, and it may be reasonable to use softlinks to > accomplish it, like this: And, in fact, this is what I tend to do. But since the case in point is for MySQL/Apache/etc., there's probably a lot more jhail instances than what you are used to seeing. This is a shared hosting platform, which is trying to pretend it's not shared, right? If you go this route, you may want to bump up the number of inodes by quite a bit above the default... -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shared files within a jail
Cameron Grant wrote: > null mounts, in -stable at least, are broken for this purpose. on > connection, sshd revoke()s some device- its pty, i assume, and when this > hits the nullfs layer a null pointer is dereferenced. if i had vfs-clue i'd > have fixed it when i found the panic about two weeks ago. when i overcame > this by putting the jails /dev on an nfs loopback, i managed to produce two > more different panics. 1) Use devfs instead. 2) Mount a devfs instance in each jail. Problem solved. -- Terry To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
Re: Shrinking /(s)bin: A Proposal
I just link bin and sbin dynamically when I want to make a small image. Works great, no hacks needed so long as / and /usr are the same partition, which they are on the CF's I make. A minimally bootable FreeBSD system is on the order of 6MB uncompressed. Warner To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
RE: miniBSD buids and runs ok on Advantek WEB 2143 box
Australian $647.00 plus a PSU -Original Message- From: Scott Ullrich [mailto:sullrich@;CRE8.COM] Sent: Wednesday, November 13, 2002 12:42 PM To: 'Murray Taylor' Subject: RE: miniBSD buids and runs ok on Advantek WEB 2143 box Do you mind me asking how much those little boogers go for? Those are nice! Thanks in advance. -scott -Original Message- From: Murray Taylor [mailto:murraytaylor@;bytecraftsystems.com] Sent: Tuesday, November 12, 2002 8:16 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: miniBSD buids and runs ok on Advantek WEB 2143 box Manuel, As the subject says, we built miniBSD following your scripts etc to make a ipf firewall box. We will be also using the same platform as a ipf / ppp dialer for our remote sites. (freeing up some desktops that are currently being used ;-) ) http://www.advantech.com.tw/eplatforms/web2143.asp Thanks for the guiding efforts! Murray Taylor Special Projects Engineer - Bytecraft Systems & Entertainment Phone: 61 3 8710 2555 Fax: 61 3 8710 2599 Direct: 61 3 9238 4275 Mobile: 61 0417 319 256 Email: [EMAIL PROTECTED] or visit us on the web http://www.bytecraftsystems.com http://www.bytecraftentertainment.com This Email has been scanned for Viruses by MailMarshal an automated gateway email virus scanner. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message This Email has been scanned for Viruses by MailMarshal an automated gateway email virus scanner. This Email has been scanned for Viruses by MailMarshal an automated gateway email virus scanner. To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
