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Re: copyout from physio, why?
On 12/28/2011 09:08 PM, gwes wrote:
I hope someone can shed some light on this.
I'm running 5.0-current on an AMD64 with 4GB of physical memory.
Reading large chunks (64K or multiples) from /dev/rsd0c using
the AMD chipset SATA controller and a modern 1G drive:
time dd if=/dev/rsd3c of=/dev/null bs=128k count=1
1+0 records in
1+0 records out
131072 bytes transferred in 11.348 secs (115498831 bytes/sec)
0.0u 2.0s 0:11.34 17.9% 0+0k 0+1io 0pf+0w
Profiling the kernel shows that copyout() is being called from
physio() via uvm_vsunlock_device() for every MAXPHYS byte chunk.
On first inspection, physio calls uvm_vslock_device(...,&map)
which checks to see if all pages in the request satisfy
PADDR_IS_DMA_REACHABLE(). If so, it returns NULL in map.
After strategy() returns, map is sent to uvm_vsunlock_device,
which calls copyout() if map != NULL.
There's a comment on uvm_vslock_device saying it always returns
something in *retp, but the code seems to indicate otherwise.
PADDR_IS_DMA_REACHABLE checks against dma_constraint, which
is 0..0x which should allow all memory< 4G to be used
for DMA.
What have I missed?
I believe that the copyout() shouldn't happen.
I'm trying to run multiple 140MB/sec drives simultaneously and
the copyout() is a killer - it's eating more of the
system memory and CPU bandwidth than I'd like.
thanks
Geoff Steckel
Responding to myself - on further examination, if the system has
only 2G, DMA is done to user pages as expected without copy{in,out}.
Once past the evil 3G boundary, page physical addresses are
>= 0x1, and the code hardwires a limit several places.
The ahci (at least) driver chokes and hangs if fed a physical address
over 4G.
I'd really like to help someone fix this or if given more clues on where
to look, I'll dig some more. The work I'm trying to do will probably
survive quite well in 2G.
Re: file name too long error - apache
I tried php without suhosin patch and it was the same. Thanks Stuart On Wed, Dec 28, 2011 at 4:44 PM, Stuart Henderson wrote: > This may be restricted by suhosin, try increasing > suhosin.get.max_value_length from its default of 512 in your > php-5.2.ini file then restart apache. > > On 2011-12-28, Alan Cheng wrote: > > Hello list, > > > > I'm trying to install an PHP web app that generates very long URLs on my > > OpenBSD 5.0 i386 snapshot. But I just keep getting "file name too long" > > errors in apache error log like below. > > It happened on both built-in apache 1.3 and apache-httpd (2.2.20) in > ports. > > I even tried compile apache2 using source files from ubuntu, as the same > > app works fine on ubuntu 11.04 + apache2 (2.2.17), it didn't help either. > > > > Any insight or suggestions? > > > > [Wed Dec 28 14:15:51 2011] [error] [client 10.249.70.50] (63)File name > too > > long: Cannot map GET > > > /media/ajax/component/boxList/filter/featured/limit/all/layout/thumbBig/vars/ > > > a%253A25%253A%257Bs%253A3%253A%2522act%2522%253Bs%253A7%253A%2522boxList%2522 > > > %253Bs%253A3%253A%2522mod%2522%253Bs%253A5%253A%2522media%2522%253Bs%253A4%25 > > > 3A%2522mode%2522%253Bs%253A3%253A%2522all%2522%253Bs%253A6%253A%2522filter%25 > > > 22%253Bs%253A8%253A%2522featured%2522%253Bs%253A5%253A%2522limit%2522%253Bs%2 > > > 53A3%253A%2522all%2522%253Bs%253A6%253A%2522layout%2522%253Bs%253A8%253A%2522 > > > thumbBig%2522%253Bs%253A6%253A%2522search%2522%253Bs%253A0%253A%2522%2522%253 > > > Bs%253A8%253A%2522per_page%2522%253Ba%253A3%253A%257Bs%253A8%253A%2522thumbBi > > > g%2522%253Bi%253A6%253Bs%253A5%253A%2522thumb%2522%253Bi%253A10%253Bs%253A4%2 > > > 53A%2522list%2522%253Bi%253A4%253B%257Ds%253A11%253A%2522show_filter%2522%253 > > > Bb%253A1%253Bs%253A10%253A%2522show_limit%2522%253Bb%253A0%253Bs%253A11%253A% > > > 2522show_layout%2522%253Bb%253A1%253Bs%253A11%253A%2522show_search%2522%253Bb > > > %253A0%253Bs%253A10%253A%2522show_pager%2522%253Bb%253A0%253Bs%253A9%253A%252 > > > 2show_more%2522%253Bb%253A1%253Bs%253A9%253A%2522save_page%2522%253Bb%253A1%2 > > > 53Bs%253A10%253A%2522pager_name%2522%253Bs%253A4%253A%2522page%2522%253Bs%253 > > > A9%253A%2522thumbsize%2522%253Bs%253A7%253A%2522160x120%2522%253Bs%253A9%253A > > > %2522more_link%2522%253Bs%253A10%253A%2522media%252Flist%2522%253Bs%253A2%253 > > > A%2522id%2522%253Bs%253A9%253A%2522media-box%2522%253Bs%253A9%253A%2522compon > > > ent%2522%253Bs%253A7%253A%2522boxList%2522%253Bs%253A4%253A%2522type%2522%253 > > > BN%253Bs%253A4%253A%2522text%2522%253BN%253Bs%253A13%253A%2522captionParams%2 > > > 522%253Ba%253A0%253A%257B%257Ds%253A7%253A%2522caption%2522%253Bs%253A9%253A% > > 2522New%2Bmedia%2522%253Bs%253A4%253A%2522page%2522%253Bi%253A1%253B%257D > > HTTP/1.1 to file, referer: http://host > > > > BTW, I found this url > > https://issues.apache.org/bugzilla/show_bug.cgi?id=45187 while > googling, it > > did help on understanding the possible root cause, but did not help in > > resolving it. > > > > thanks, > > Alan Cheng
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copyout from physio, why?
I hope someone can shed some light on this. I'm running 5.0-current on an AMD64 with 4GB of physical memory. Reading large chunks (64K or multiples) from /dev/rsd0c using the AMD chipset SATA controller and a modern 1G drive: time dd if=/dev/rsd3c of=/dev/null bs=128k count=1 1+0 records in 1+0 records out 131072 bytes transferred in 11.348 secs (115498831 bytes/sec) 0.0u 2.0s 0:11.34 17.9% 0+0k 0+1io 0pf+0w Profiling the kernel shows that copyout() is being called from physio() via uvm_vsunlock_device() for every MAXPHYS byte chunk. On first inspection, physio calls uvm_vslock_device(..., &map) which checks to see if all pages in the request satisfy PADDR_IS_DMA_REACHABLE(). If so, it returns NULL in map. After strategy() returns, map is sent to uvm_vsunlock_device, which calls copyout() if map != NULL. There's a comment on uvm_vslock_device saying it always returns something in *retp, but the code seems to indicate otherwise. PADDR_IS_DMA_REACHABLE checks against dma_constraint, which is 0..0x which should allow all memory < 4G to be used for DMA. What have I missed? I believe that the copyout() shouldn't happen. I'm trying to run multiple 140MB/sec drives simultaneously and the copyout() is a killer - it's eating more of the system memory and CPU bandwidth than I'd like. thanks Geoff Steckel
Re: Problems with outgoing loadbalancing with pppoe(4)
On 2011-12-28, Marc Peters wrote: > i have a problem with multiple DSL Lines and loadbalancing outgoing > traffic. All traffic leaves only over the first interface pppoe0 and i > can't figure out why and how to change this. Maybe the problem is, that > both lines are connected to the same provider and therefore have the > same host as connecting point. No, that's not the problem, I had a setup like this using route-to for someone with 5 lines with the same provider which worked fine. (I now changed that setup to using multipath routes as they are now with an ISP which has good controls on directing inbound traffic between the lines, but it won't be much help with most ISPs). I'm not looking at your rules in detail, but this is possible to setup, just a question of getting the right config. Some basic things to check: - make sure the right rules are matching the packets (use log rules and tcpdump -nei pflog0) - make sure you are sourcing your test traffic from a machine which is affected by route-to rules (traffic generated on the PF box itself won't hit an "in" rule) - when you do manage to get traffic out of both interfaces, if you still have problems with all or some packets, make sure the correct source address matches up with the correct pppoe interface, otherwise if your ISP does certain types of ingress filtering they may drop packets with a mismatching source address.
Re: create a backup of an online server
You were using Dovecot weren't you? If you're more interested in protecting against server problems than end-user error you might look into http://wiki2.dovecot.org/Tools/Dsync On 2011-12-28, Wesley M. wrote: > In fact, > -1- i want to copy the mail server system to another machine. I suppose > rsnaphot > or a dump/restore in single user? is a good choice... > > -2- And keep emails synchronized between the 2 mail server using rsync, > this step is ok. > > Thank you very much for all your replies. > > Cheers, > > Wesley. > > On Wed, 28 Dec 2011 09:30:11 -0700, Darrin Chandler > wrote: >> On Wed, Dec 28, 2011 at 11:00:52AM -0500, Nick Holland wrote: >>> However, backing up an IMAP mail store daily leaves a lot to be >>> desired. Most likely time for someone to accidentally delete the >>> important mail they have been waiting for is probably not too long >>> after it arrives. Depending (mostly) on the number of messages in >>> your mail store, you may be able to run an rsync of the maildir >>> hourly or maybe even every 15 minutes to another local hard disk. >>> You could make that rsync cumulative -- no removing of deleted >>> files, then daily rsync that backup off to another machine (using >>> --link-dest option for a quick, rotated backup), and then doing an >>> rsync WITH deletion to your local system, so your backup store >>> doesn't grow without bound. >> >> This sounds like a job for rsnapshot: essentailly point-in-time >> snapshots on top of rsync, using hard links of unchanged files for space >> and speed. With some additional shell scripting + cron you could have a >> really nice scheme to keep 15 minute snaps for the last few days, then >> daily for a while, then weekly. I would advise a bit of caution if you're thinking of using big hardlink trees on filesystems which have softdep enabled. No concrete reason I can point to, but this is at least likely to be hard on the system.. (personally I don't use softdep much).
Re: OpenVPN issues on 5.0
On Mon, Dec 26, 2011 at 08:57:18PM -0200, Christiano F. Haesbaert wrote: > On Sun, Dec 25, 2011 at 04:10:19PM +0100, Erling Westenvik wrote: > > On Sat, Dec 24, 2011 at 07:50:53PM -0200, Christiano F. Haesbaert wrote: > > > > > > Heya, > > > > > > can you paste me the output of: > > > > > > ifconfig acx0 hwfeatures > > > ifconfig url0 hwfeatures > > > > > > > Sorry, but I'm not on -current. Are there other ways to display such > > information? > > > > Not like this, but I think I found your problem, could you please try > the following diff: > > http://article.gmane.org/gmane.os.openbsd.misc/192013 > > If you have any problems applying it, please report to me off list. The diff fixes Erling's problem :).
Re: Packet drop because of invalid IP checksum on Soerkis / vr / ral
Just to let you know, this diff fixes
http://marc.info/?l=openbsd-misc&m=132391433319512&w=2
So I've hopes it will work for you.
On Mon, Dec 26, 2011 at 08:41:54PM -0200, Christiano F. Haesbaert wrote:
> On Thu, Dec 01, 2011 at 11:51:18PM -0200, Christiano F. Haesbaert wrote:
> > I think I've found the problem.
> >
> > when a packet comes from ral0 ---> 10.0.0.1, the bridge changes the
> > received interface to vr0, which has IFCAP_CSUM_IPv4.
> >
> > So when the icmp layer is about to test the checksum, it assumes the
> > output interface is the same one which the packet came in (in our
> > case, vr0, and not ral0). So the checksum does not get calculated.
> >
> > That's why it works when we remove the capabilities from vr0.
>
> Hi again,
>
> Could you try the following diff ?
> Please remember to undo the modifications of the previous diff.
>
> The thing is in_proto_cksum_out() correctly escapes hw checksumming if
> the interface is a member of a bridge, the same should be done for ip
> checksums.
>
> Index: ip_output.c
> ===
> RCS file: /cvs/src/sys/netinet/ip_output.c,v
> retrieving revision 1.224
> diff -d -u -p -w -r1.224 ip_output.c
> --- ip_output.c 2 Dec 2011 03:15:31 - 1.224
> +++ ip_output.c 26 Dec 2011 22:22:34 -
> @@ -746,7 +746,8 @@ sendit:
>*/
> if (ntohs(ip->ip_len) <= mtu) {
> ip->ip_sum = 0;
> - if ((ifp->if_capabilities & IFCAP_CSUM_IPv4)) {
> + if ((ifp->if_capabilities & IFCAP_CSUM_IPv4) &&
> + (ifp->if_bridge == NULL)) {
> m->m_pkthdr.csum_flags |= M_IPV4_CSUM_OUT;
> ipstat.ips_outhwcsum++;
> } else
> @@ -892,7 +893,8 @@ ip_fragment(struct mbuf *m, struct ifnet
> mhip->ip_off = htons((u_int16_t)mhip->ip_off);
> mhip->ip_sum = 0;
> if ((ifp != NULL) &&
> - (ifp->if_capabilities & IFCAP_CSUM_IPv4)) {
> + (ifp->if_capabilities & IFCAP_CSUM_IPv4) &&
> + (ifp->if_bridge == NULL)) {
> m->m_pkthdr.csum_flags |= M_IPV4_CSUM_OUT;
> ipstat.ips_outhwcsum++;
> } else
> @@ -911,7 +913,8 @@ ip_fragment(struct mbuf *m, struct ifnet
> ip->ip_off |= htons(IP_MF);
> ip->ip_sum = 0;
> if ((ifp != NULL) &&
> - (ifp->if_capabilities & IFCAP_CSUM_IPv4)) {
> + (ifp->if_capabilities & IFCAP_CSUM_IPv4) &&
> + (ifp->if_bridge == NULL)) {
> m->m_pkthdr.csum_flags |= M_IPV4_CSUM_OUT;
> ipstat.ips_outhwcsum++;
> } else
Re: OpenBSD as router for UK FTTC?
Hi, we finally went live today so a small summary of how it went. pppoe(4) did not work. We need to authenticate with chap first, then pap. pppoe(4) forces the exclusive use of either one or the other. This was an unexpected gotcha and I will look at the code to see what can be done. pppoe(8) worked fine so we are using it for the moment. We did use the debug option when diagnosing the issue with pppoe(4) as you suggested but tcpdump on the physical interface was much more comprehensible. Hope having this in the archives helps someone else as google is rather poor at returning useful results...
Re: Problems with outgoing loadbalancing with pppoe(4)
On 12/28/2011 07:35 PM, Michel Blais wrote: You could bound those 2 but your ISP would have to bound them too with the same protocol so I wouldn't count on that. I'm not even sure OpenBSD support it since I can't really find anything fast on a google search. You could do a pf rule to route paquets in round robin for each connection but that would cause NAT persistance problem. Here a FAQ for this : http://www.openbsd.org/faq/pf/pools.html This is what i am trying to do (s. attached pf.conf). I found some threads on misc@ and tried to implement the mentioned parts into pf.conf (https should only going out on pppoe1, but it doesn't) but this didn't work out. I left out the outgoing parts, because we didn't provide any services to the internet on that net so outgoing routing to the right interface doesn't match here, i think. I had the corresponding NAT-rules in the pf.conf before, that didn't work out,too. You could do a pf rule to do a policy router for a part of your lan is routed via pppoe1 instead but that also not the best solutions since if only those routed via pppoe0 use the net, that would still meen pppoe1 unuse. The best solution is BGP but that not a equal share between those 2. http://www.openbsd.org/cgi-bin/man.cgi?query=bgpd&sektion=8 http://www.openbsd.org/cgi-bin/man.cgi?query=bgpd.conf&apropos=0&sektion=0&manpath=OpenBSD+Current&arch=i386&format=html Sorry, but that is not an option for these lines. Why not contact your ISP to talk with them about possible solution ? The support from this ISP is shitty at best (yes, these are 'business' lines), but it's cheap and so it's a business decision from the management... I wonder, why it's not working for me but some subscribers seem to have a working setup for this. But noone mentiones, if it's the same ISP or not. Michel Le 2011-12-28 12:41, Marc Peters a icrit : Hi List, i have a problem with multiple DSL Lines and loadbalancing outgoing traffic. All traffic leaves only over the first interface pppoe0 and i can't figure out why and how to change this. Maybe the problem is, that both lines are connected to the same provider and therefore have the same host as connecting point. Routing Table: ~ # netstat -rn Routing tables Internet: Destination Gateway Flags Refs Use Mtu Prio Iface default XXX.YYY.133.6 UGS 0 12091 - 8 pppoe0 127/8 127.0.0.1 UGRS 0 0 33196 8 lo0 127.0.0.1 127.0.0.1 UH 1 258 33196 4 lo0 192.168.0/23 link#5 UC 18 0 - 4 sis0 192.168.0.82 00:19:99:8b:fb:be UHLc 0 4935 - 4 sis0 192.168.0.105 00:30:05:9e:24:1b UHLc 0 16 - 4 sis0 192.168.0.107 40:01:c6:77:b3:41 UHLc 0 0 - 4 sis0 192.168.0.232 00:19:99:a0:3e:65 UHLc 0 576 - 4 sis0 192.168.1.21 e4:1f:13:62:f2:88 UHLc 0 1387 - 4 sis0 192.168.1.22 00:15:17:1e:72:d8 UHLc 0 2816 - 4 sis0 192.168.1.23 78:e7:d1:e3:7f:9a UHLc 0 34 - 4 sis0 192.168.1.53 d8:d3:85:63:6e:86 UHLc 1 117 - 4 sis0 192.168.1.58 68:b5:99:c0:c0:d4 UHLc 0 98 - 4 sis0 192.168.1.59 d8:d3:85:96:15:d6 UHLc 1 614 - 4 sis0 192.168.1.98 00:19:99:8e:77:93 UHLc 0 550 - 4 sis0 192.168.1.111 00:19:99:0f:1b:d4 UHLc 0 10 - 4 sis0 192.168.1.127 00:30:05:a5:89:d2 UHLc 0 1598 - 4 sis0 192.168.1.172 00:23:df:fd:a3:ed UHLc 0 249 - 4 sis0 192.168.1.179 f0:de:f1:39:f6:8b UHLc 0 11 - 4 sis0 192.168.1.241 00:14:4f:d4:a1:84 UHLc 0 2 - 4 sis0 192.168.1.243 00:14:4f:d4:a1:8d UHLc 0 842 - 4 sis0 192.168.1.250 40:01:c6:40:ae:4f UHLc 0 0 - 4 sis0 192.168.2/24 link#8 UC 1 0 - 4 sis3 192.168.2.2 00:1f:12:46:80:80 UHLc 0 11608502 - 4 sis3 XXX.YYY.133.6 AAA.BBB.212.232 UH 0 0 - 4 pppoe1 224/4 127.0.0.1 URS 0 0 33196 8 lo0 [snip] With tcpdump i see all traffic leaving over pppoe0 and nothing on pppoe1. Is it even possible with the same provider to do outgoing loadbalancing? Maybe someone more experienced than me can point into the right direction. ifconfig: lo0: flags=8049 mtu 33196 priority: 0 groups: lo inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0xa inet 127.0.0.1 netmask 0xff00 sis0: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:00 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet 192.168.1.2 netmask 0xfe00 broadcast 192.168.1.255 inet6 fe80::200:24ff:fecc:200%sis0 prefixlen 64 scopeid 0x5 sis1: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:01 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet6 fe80::200:24ff:fecc:201%sis1 prefixlen 64 scopeid 0x6 sis2: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:02 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet6 fe80::200:24ff:fecc:202%sis2 prefixlen 64 scopeid 0x7 sis3: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:03 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet 192.168.2.1 netmask 0xff00 broadcast 192.168.2.255 inet6 fe80::200:24ff:fecc:203%sis3 prefixlen 64 scopeid 0x8 enc0: flags=0<> priority: 0 groups: enc status: active pppoe0: flags=8851 mtu 1492 priority: 0 dev: sis1 state: session sid: 0x4f50 PADI retries: 0 PADR r
Re: create a backup of an online server
On 12/28/2011 11:30 AM, Darrin Chandler wrote: This sounds like a job for rsnapshot: essentailly point-in-time snapshots on top of rsync, using hard links of unchanged files for space and speed. With some additional shell scripting + cron you could have a really nice scheme to keep 15 minute snaps for the last few days, then daily for a while, then weekly. this is what the --link-dest option of rsync does -- hard links of unchanged files to a new directory. Very sweet feature. There are probably a dozen "projects" which were obsoleted by the addition of the --link-dest option... Nick.
Re: Problems with outgoing loadbalancing with pppoe(4)
You could bound those 2 but your ISP would have to bound them too with the same protocol so I wouldn't count on that. I'm not even sure OpenBSD support it since I can't really find anything fast on a google search. You could do a pf rule to route paquets in round robin for each connection but that would cause NAT persistance problem. Here a FAQ for this : http://www.openbsd.org/faq/pf/pools.html You could do a pf rule to do a policy router for a part of your lan is routed via pppoe1 instead but that also not the best solutions since if only those routed via pppoe0 use the net, that would still meen pppoe1 unuse. The best solution is BGP but that not a equal share between those 2. http://www.openbsd.org/cgi-bin/man.cgi?query=bgpd&sektion=8 http://www.openbsd.org/cgi-bin/man.cgi?query=bgpd.conf&apropos=0&sektion=0&manpath=OpenBSD+Current&arch=i386&format=html Why not contact your ISP to talk with them about possible solution ? Michel Le 2011-12-28 12:41, Marc Peters a icrit : Hi List, i have a problem with multiple DSL Lines and loadbalancing outgoing traffic. All traffic leaves only over the first interface pppoe0 and i can't figure out why and how to change this. Maybe the problem is, that both lines are connected to the same provider and therefore have the same host as connecting point. Routing Table: ~ # netstat -rn Routing tables Internet: DestinationGatewayFlags Refs Use Mtu Prio Iface defaultXXX.YYY.133.6 UGS012091 - 8 pppoe0 127/8 127.0.0.1 UGRS 00 33196 8 lo0 127.0.0.1 127.0.0.1 UH 1 258 33196 4 lo0 192.168.0/23 link#5 UC180 - 4 sis0 192.168.0.82 00:19:99:8b:fb:be UHLc 0 4935 - 4 sis0 192.168.0.105 00:30:05:9e:24:1b UHLc 0 16 - 4 sis0 192.168.0.107 40:01:c6:77:b3:41 UHLc 00 - 4 sis0 192.168.0.232 00:19:99:a0:3e:65 UHLc 0 576 - 4 sis0 192.168.1.21 e4:1f:13:62:f2:88 UHLc 0 1387 - 4 sis0 192.168.1.22 00:15:17:1e:72:d8 UHLc 0 2816 - 4 sis0 192.168.1.23 78:e7:d1:e3:7f:9a UHLc 0 34 - 4 sis0 192.168.1.53 d8:d3:85:63:6e:86 UHLc 1 117 - 4 sis0 192.168.1.58 68:b5:99:c0:c0:d4 UHLc 0 98 - 4 sis0 192.168.1.59 d8:d3:85:96:15:d6 UHLc 1 614 - 4 sis0 192.168.1.98 00:19:99:8e:77:93 UHLc 0 550 - 4 sis0 192.168.1.111 00:19:99:0f:1b:d4 UHLc 0 10 - 4 sis0 192.168.1.127 00:30:05:a5:89:d2 UHLc 0 1598 - 4 sis0 192.168.1.172 00:23:df:fd:a3:ed UHLc 0 249 - 4 sis0 192.168.1.179 f0:de:f1:39:f6:8b UHLc 0 11 - 4 sis0 192.168.1.241 00:14:4f:d4:a1:84 UHLc 02 - 4 sis0 192.168.1.243 00:14:4f:d4:a1:8d UHLc 0 842 - 4 sis0 192.168.1.250 40:01:c6:40:ae:4f UHLc 00 - 4 sis0 192.168.2/24 link#8 UC 10 - 4 sis3 192.168.2.200:1f:12:46:80:80 UHLc 0 11608502 - 4 sis3 XXX.YYY.133.6 AAA.BBB.212.232 UH 00 - 4 pppoe1 224/4 127.0.0.1 URS00 33196 8 lo0 [snip] With tcpdump i see all traffic leaving over pppoe0 and nothing on pppoe1. Is it even possible with the same provider to do outgoing loadbalancing? Maybe someone more experienced than me can point into the right direction. ifconfig: lo0: flags=8049 mtu 33196 priority: 0 groups: lo inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0xa inet 127.0.0.1 netmask 0xff00 sis0: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:00 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet 192.168.1.2 netmask 0xfe00 broadcast 192.168.1.255 inet6 fe80::200:24ff:fecc:200%sis0 prefixlen 64 scopeid 0x5 sis1: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:01 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet6 fe80::200:24ff:fecc:201%sis1 prefixlen 64 scopeid 0x6 sis2: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:02 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet6 fe80::200:24ff:fecc:202%sis2 prefixlen 64 scopeid 0x7 sis3: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:03 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet 192.168.2.1 netmask 0xff00 broadcast 192.168.2.255 inet6 fe80::200:24ff:fecc:203%sis3 prefixlen 64 scopeid 0x8 enc0: fla
Problems with outgoing loadbalancing with pppoe(4)
Hi List, i have a problem with multiple DSL Lines and loadbalancing outgoing traffic. All traffic leaves only over the first interface pppoe0 and i can't figure out why and how to change this. Maybe the problem is, that both lines are connected to the same provider and therefore have the same host as connecting point. Routing Table: ~ # netstat -rn Routing tables Internet: DestinationGatewayFlags Refs Use Mtu Prio Iface defaultXXX.YYY.133.6 UGS012091 - 8 pppoe0 127/8 127.0.0.1 UGRS 00 33196 8 lo0 127.0.0.1 127.0.0.1 UH 1 258 33196 4 lo0 192.168.0/23 link#5 UC180 - 4 sis0 192.168.0.82 00:19:99:8b:fb:be UHLc 0 4935 - 4 sis0 192.168.0.105 00:30:05:9e:24:1b UHLc 0 16 - 4 sis0 192.168.0.107 40:01:c6:77:b3:41 UHLc 00 - 4 sis0 192.168.0.232 00:19:99:a0:3e:65 UHLc 0 576 - 4 sis0 192.168.1.21 e4:1f:13:62:f2:88 UHLc 0 1387 - 4 sis0 192.168.1.22 00:15:17:1e:72:d8 UHLc 0 2816 - 4 sis0 192.168.1.23 78:e7:d1:e3:7f:9a UHLc 0 34 - 4 sis0 192.168.1.53 d8:d3:85:63:6e:86 UHLc 1 117 - 4 sis0 192.168.1.58 68:b5:99:c0:c0:d4 UHLc 0 98 - 4 sis0 192.168.1.59 d8:d3:85:96:15:d6 UHLc 1 614 - 4 sis0 192.168.1.98 00:19:99:8e:77:93 UHLc 0 550 - 4 sis0 192.168.1.111 00:19:99:0f:1b:d4 UHLc 0 10 - 4 sis0 192.168.1.127 00:30:05:a5:89:d2 UHLc 0 1598 - 4 sis0 192.168.1.172 00:23:df:fd:a3:ed UHLc 0 249 - 4 sis0 192.168.1.179 f0:de:f1:39:f6:8b UHLc 0 11 - 4 sis0 192.168.1.241 00:14:4f:d4:a1:84 UHLc 02 - 4 sis0 192.168.1.243 00:14:4f:d4:a1:8d UHLc 0 842 - 4 sis0 192.168.1.250 40:01:c6:40:ae:4f UHLc 00 - 4 sis0 192.168.2/24 link#8 UC 10 - 4 sis3 192.168.2.200:1f:12:46:80:80 UHLc 0 11608502 - 4 sis3 XXX.YYY.133.6 AAA.BBB.212.232 UH 00 - 4 pppoe1 224/4 127.0.0.1 URS00 33196 8 lo0 [snip] With tcpdump i see all traffic leaving over pppoe0 and nothing on pppoe1. Is it even possible with the same provider to do outgoing loadbalancing? Maybe someone more experienced than me can point into the right direction. ifconfig: lo0: flags=8049 mtu 33196 priority: 0 groups: lo inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0xa inet 127.0.0.1 netmask 0xff00 sis0: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:00 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet 192.168.1.2 netmask 0xfe00 broadcast 192.168.1.255 inet6 fe80::200:24ff:fecc:200%sis0 prefixlen 64 scopeid 0x5 sis1: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:01 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet6 fe80::200:24ff:fecc:201%sis1 prefixlen 64 scopeid 0x6 sis2: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:02 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet6 fe80::200:24ff:fecc:202%sis2 prefixlen 64 scopeid 0x7 sis3: flags=8843 mtu 1500 lladdr 00:00:24:cc:02:03 priority: 0 media: Ethernet autoselect (100baseTX full-duplex) status: active inet 192.168.2.1 netmask 0xff00 broadcast 192.168.2.255 inet6 fe80::200:24ff:fecc:203%sis3 prefixlen 64 scopeid 0x8 enc0: flags=0<> priority: 0 groups: enc status: active pppoe0: flags=8851 mtu 1492 priority: 0 dev: sis1 state: session sid: 0x4f50 PADI retries: 0 PADR retries: 0 time: 5d 00:14:11 sppp: phase network authproto pap authname "" groups: pppoe egress status: active inet6 fe80::200:24ff:fec9:2e84%pppoe0 -> prefixlen 64 scopeid 0xb inet AAA.BBB.216.27 --> XXX.YYY.133.6 netmask 0x pppoe1: flags=8851 mtu 1492 priority: 0 dev: sis2 state: session sid: 0x368b PADI retries: 0 PADR retries: 0 time: 5d 00:14:21 sppp: phase network authproto pap authname "" groups: pppoe status: active inet6 fe80::200:24ff:fec9:2e84%pppoe1 -> prefixlen 64 scopeid 0xc inet AAA.BBB.212.232 --> XXX.YYY.133.6 netmask 0x pflog0: flags=141 mtu 33196 priority: 0 groups: pflog pf.conf: ~ # grep -v -e '^\n' -e '^#' /etc/pf.conf ext_if1="pppoe0" ext_if
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Re: create a backup of an online server
In fact, -1- i want to copy the mail server system to another machine. I suppose rsnaphot or a dump/restore in single user? is a good choice... -2- And keep emails synchronized between the 2 mail server using rsync, this step is ok. Thank you very much for all your replies. Cheers, Wesley. On Wed, 28 Dec 2011 09:30:11 -0700, Darrin Chandler wrote: > On Wed, Dec 28, 2011 at 11:00:52AM -0500, Nick Holland wrote: >> However, backing up an IMAP mail store daily leaves a lot to be >> desired. Most likely time for someone to accidentally delete the >> important mail they have been waiting for is probably not too long >> after it arrives. Depending (mostly) on the number of messages in >> your mail store, you may be able to run an rsync of the maildir >> hourly or maybe even every 15 minutes to another local hard disk. >> You could make that rsync cumulative -- no removing of deleted >> files, then daily rsync that backup off to another machine (using >> --link-dest option for a quick, rotated backup), and then doing an >> rsync WITH deletion to your local system, so your backup store >> doesn't grow without bound. > > This sounds like a job for rsnapshot: essentailly point-in-time > snapshots on top of rsync, using hard links of unchanged files for space > and speed. With some additional shell scripting + cron you could have a > really nice scheme to keep 15 minute snaps for the last few days, then > daily for a while, then weekly.
Re: ftpd change?
On 2011-12-27, I wrote: > There were some DoS protections added which limit the number of > results that can be returned from a glob, it is to do with total > filename lengths iirc. I see this a lot in package snapshot If you're looking for this, the limits are in src/libc/gen/glob.c; the first limit you're likely to hit with ftpd is GLOB_STAT; I'm not sure what a good value would be but 128 is clearly too small. > directories. If you want something good that will handle more > files, try pureftpd (it's in ports). note _pure_ftpd (not proftpd, which is not in ports for good reasons regularly documented at your favourite vulnerability database).
Re: create a backup of an online server
On Wed, Dec 28, 2011 at 11:00:52AM -0500, Nick Holland wrote: > However, backing up an IMAP mail store daily leaves a lot to be > desired. Most likely time for someone to accidentally delete the > important mail they have been waiting for is probably not too long > after it arrives. Depending (mostly) on the number of messages in > your mail store, you may be able to run an rsync of the maildir > hourly or maybe even every 15 minutes to another local hard disk. > You could make that rsync cumulative -- no removing of deleted > files, then daily rsync that backup off to another machine (using > --link-dest option for a quick, rotated backup), and then doing an > rsync WITH deletion to your local system, so your backup store > doesn't grow without bound. This sounds like a job for rsnapshot: essentailly point-in-time snapshots on top of rsync, using hard links of unchanged files for space and speed. With some additional shell scripting + cron you could have a really nice scheme to keep 15 minute snaps for the last few days, then daily for a while, then weekly. -- http://code.phxbsd.com/
Re: create a backup of an online server
As always...you design your backup for your application. Mail servers are particularly tricky, as the data the contain tends to change minute-by-minute, and they are prone to both hardware failure, administrator error AND user error. A user who nukes their mail store will want their data restored, but the other ten thousand users will NOT want their mail store rolled back 24 hours (or whatever your backup interval is). Dumps aren't so good at dealing with that. For a POP mail server, daily backups of the mailstore are almost useless...you restore data that's already been retrieved, you don't restore data that wasn't retrieved. For IMAP servers using a Maildir storage system, backup is relatively straight forward -- rsync does wonders. But, understand how your system works. Maildir is very slick for this -- generally, a file exists in a maildir, or it doesn't...once it exists, it generally isn't supposed to change (though it may be deleted). This is screaming "rsync!". However, backing up an IMAP mail store daily leaves a lot to be desired. Most likely time for someone to accidentally delete the important mail they have been waiting for is probably not too long after it arrives. Depending (mostly) on the number of messages in your mail store, you may be able to run an rsync of the maildir hourly or maybe even every 15 minutes to another local hard disk. You could make that rsync cumulative -- no removing of deleted files, then daily rsync that backup off to another machine (using --link-dest option for a quick, rotated backup), and then doing an rsync WITH deletion to your local system, so your backup store doesn't grow without bound. Note that with this strategy, you will end up restoring deleted e-mails and duplicating sorted e-mails. Imperfect, but overall, more annoying than harmful. If your IMAP server keeps a local index, you will need to "fix" that after a restore. You may need to lay a beating on the local indexes of your IMAP clients, too. Again, you really have to understand your task here and the tools you are using. This isn't a "How To" kinda thing, this is an "Understand. Then do" thing. Having any form of backup without knowing how to USE it to deal with real-life disasters is useless. If your e-mail server has an SQL database associated with it, you will have to know how to manage that in conjunction with the IMAP files. This can get ugly fast. Alsowith e-mail, look at the legal issues of backups. You generally don't want years worth of backups in many countries, as they could be fodder for a lawyer's "discovery" expeditions. Whatever you do for backup should be clearly documented, i.e., "We backup one week's worth of data", and it should be documented BEFORE the lawyers come knocking. This is a good place for using a second computer as the backup device, so you always know where all your backups are...rather than tapes, where a five year old tape that fell behind a desk could come back to haunt you later. And, it's all useless unless you know you can restore it, so practice... odds are, you will learn something. Nick. On 12/28/2011 01:06 AM, Wesley M. wrote: Hi, I want to backup our mailserver(4.7) in production. I read : http://www.openbsd.org/faq/faq10.html#DupFS Can i do this wd1(my backup disk) : mount /dev/wd1a /mnt dump -0auf /mnt/etc_backup /dev/wd0a ... same for wd0d and wd0e ... Or do i need absolutely to do it in Single User? Or perhaps, there's a better way to do it. Thank you very much. Wesley.
Re: create a backup of an online server
On 2011-12-28, L. V. Lammert wrote: > mysqldump will provide a 'known state' of the database, which will make a > restore possible; backing up files will only work if you shut down mysql > during the backup process - something not realistic for a production > server. see mysqlhotcopy(1). there are + and - points for each method though.
Re: create a backup of an online server
On Wed, 28 Dec 2011, Wesley M. wrote: > Hi, > I want to backup our mailserver(4.7) in production. > I read : > http://www.openbsd.org/faq/faq10.html#DupFS > Much simpler to: > Do a mysqldump and direct to a known backup location > Use rsnapshot to backup all of your data (including the email system, home, and the mysqlbackup) mysqldump will provide a 'known state' of the database, which will make a restore possible; backing up files will only work if you shut down mysql during the backup process - something not realistic for a production server. Lee
Updates of ocean freight from China
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Re: ufs journal ?
On Wed, Dec 28, 2011 at 10:31:40AM +0100, David Vasek wrote: > On Tue, 27 Dec 2011, Otto Moerbeek wrote: > > >There are several way to speedup fsck which are available now: > > > >- Use larger block and fragment sizes when doing a newfs, of course > >this requires rebuilding the file system > >- Recent versions of OpenBSd have some improvements with fsck that > >kick in when the file systems was using softupdates when the system crashed. > >- Use a smaller file system > > Hello Otto, > > is use of lower inode density while keeping the rest as default > possible alternative or not? It seems to work. Does it have any > adverse effect? No. > Provided one doesn't have several-TB file system full of hundreds > millions tiny files, of course, but then it is not any better than > larger blocks and fragments. And both solutions reduce memory needed > for fsck. > > Thanks for your answer. > > Regards, > David The number of inodes is indeed the most important factor for fsck memory usage and speed. Increasing block and fragment size als has the effect of reducing inode density, while reducing metadata overhead at the same time (unless you have very many small files). -Otto
Re: ufs journal ?
On Tue, 27 Dec 2011, Otto Moerbeek wrote: There are several way to speedup fsck which are available now: - Use larger block and fragment sizes when doing a newfs, of course this requires rebuilding the file system - Recent versions of OpenBSd have some improvements with fsck that kick in when the file systems was using softupdates when the system crashed. - Use a smaller file system Hello Otto, is use of lower inode density while keeping the rest as default possible alternative or not? It seems to work. Does it have any adverse effect? Provided one doesn't have several-TB file system full of hundreds millions tiny files, of course, but then it is not any better than larger blocks and fragments. And both solutions reduce memory needed for fsck. Thanks for your answer. Regards, David
Re: Where do I buy Lemote Loongson/Godson MIPS hardware? (was Re: Longs buy?)
Thanks and HAPPY NEW YEAR EVERYBODY
Re: Upgrading 4.9 to 5.0 problems: can't build kernel, errata patch not in CVS, no documentation for netstart changes
On 2011-12-25, openbsd_mis...@zehmahyesh.e4ward.com wrote: > I then downloaded the 4 source tarballs from > http://ftp5.usa.openbsd.org/pub/OpenBSD/5.0/*.tar.gz, unpacked them > into the > proper places and ran "cvs update" on them (using the proper options > for the > -stable branch, of course, as per the FAQ). There were no updates > patched into the trees. > > The patch for the bind DoS > (http://ftp.openbsd.org/pub/OpenBSD/patches/5.0/common/001_bind.patch) > > specifically was not in the CVS stable branch, almost a month after > the patch > came out. I had to add it manually to the tree. This patch *is* in the stable branch, so there's either a problem with your process or the mirror you used. Either way you didn't include enough information for anyone to help track it down.
Re: file name too long error - apache
This may be restricted by suhosin, try increasing suhosin.get.max_value_length from its default of 512 in your php-5.2.ini file then restart apache. On 2011-12-28, Alan Cheng wrote: > Hello list, > > I'm trying to install an PHP web app that generates very long URLs on my > OpenBSD 5.0 i386 snapshot. But I just keep getting "file name too long" > errors in apache error log like below. > It happened on both built-in apache 1.3 and apache-httpd (2.2.20) in ports. > I even tried compile apache2 using source files from ubuntu, as the same > app works fine on ubuntu 11.04 + apache2 (2.2.17), it didn't help either. > > Any insight or suggestions? > > [Wed Dec 28 14:15:51 2011] [error] [client 10.249.70.50] (63)File name too > long: Cannot map GET > /media/ajax/component/boxList/filter/featured/limit/all/layout/thumbBig/vars/ > a%253A25%253A%257Bs%253A3%253A%2522act%2522%253Bs%253A7%253A%2522boxList%2522 > %253Bs%253A3%253A%2522mod%2522%253Bs%253A5%253A%2522media%2522%253Bs%253A4%25 > 3A%2522mode%2522%253Bs%253A3%253A%2522all%2522%253Bs%253A6%253A%2522filter%25 > 22%253Bs%253A8%253A%2522featured%2522%253Bs%253A5%253A%2522limit%2522%253Bs%2 > 53A3%253A%2522all%2522%253Bs%253A6%253A%2522layout%2522%253Bs%253A8%253A%2522 > thumbBig%2522%253Bs%253A6%253A%2522search%2522%253Bs%253A0%253A%2522%2522%253 > Bs%253A8%253A%2522per_page%2522%253Ba%253A3%253A%257Bs%253A8%253A%2522thumbBi > g%2522%253Bi%253A6%253Bs%253A5%253A%2522thumb%2522%253Bi%253A10%253Bs%253A4%2 > 53A%2522list%2522%253Bi%253A4%253B%257Ds%253A11%253A%2522show_filter%2522%253 > Bb%253A1%253Bs%253A10%253A%2522show_limit%2522%253Bb%253A0%253Bs%253A11%253A% > 2522show_layout%2522%253Bb%253A1%253Bs%253A11%253A%2522show_search%2522%253Bb > %253A0%253Bs%253A10%253A%2522show_pager%2522%253Bb%253A0%253Bs%253A9%253A%252 > 2show_more%2522%253Bb%253A1%253Bs%253A9%253A%2522save_page%2522%253Bb%253A1%2 > 53Bs%253A10%253A%2522pager_name%2522%253Bs%253A4%253A%2522page%2522%253Bs%253 > A9%253A%2522thumbsize%2522%253Bs%253A7%253A%2522160x120%2522%253Bs%253A9%253A > %2522more_link%2522%253Bs%253A10%253A%2522media%252Flist%2522%253Bs%253A2%253 > A%2522id%2522%253Bs%253A9%253A%2522media-box%2522%253Bs%253A9%253A%2522compon > ent%2522%253Bs%253A7%253A%2522boxList%2522%253Bs%253A4%253A%2522type%2522%253 > BN%253Bs%253A4%253A%2522text%2522%253BN%253Bs%253A13%253A%2522captionParams%2 > 522%253Ba%253A0%253A%257B%257Ds%253A7%253A%2522caption%2522%253Bs%253A9%253A% > 2522New%2Bmedia%2522%253Bs%253A4%253A%2522page%2522%253Bi%253A1%253B%257D > HTTP/1.1 to file, referer: http://host > > BTW, I found this url > https://issues.apache.org/bugzilla/show_bug.cgi?id=45187 while googling, it > did help on understanding the possible root cause, but did not help in > resolving it. > > thanks, > Alan Cheng
Re: create a backup of an online server
On Wed, Dec 28, 2011 at 8:51 AM, Gregory Edigarov wrote: > On Wed, 28 Dec 2011 10:06:14 +0400 > "Wesley M." wrote: > >> Hi, >> I want to backup our mailserver(4.7) in production. >> I read : >> http://www.openbsd.org/faq/faq10.html#DupFS >> >> Can i do this wd1(my backup >> disk) : >> >> mount /dev/wd1a /mnt >> dump -0auf /mnt/etc_backup /dev/wd0a >> ... >> same >> for wd0d and wd0e ... Or do i need absolutely to do it in Single >> User? >> >> Or >> perhaps, there's a better way to do it. > > Personaly I found a way for myself to produce a consistent backups: > 1. have an additional filesystem /backup > 2. mount /backup > 3. sync your changed files to /backup (I usually do this with rsync, > YMMV) > 4. umount /backup > 5. mount /your_backup_media > 6. dump -0auf /your_backup_media /dev/ > > However it need some preparation done beforehand, preferably on system > install. > > this way you will be able to dump live filesystems without having to > reboot your server. > > -- > With best regards, > B B B B Gregory Edigarov > Wouldn't you consider AMANDA http://www.amanda.org I had been using it for long in my previous support engineering life. It's nice. -- ### Coonardoo - PQP8P=P8QP:P0 Q QQP=Q / The Well In The Shadow / Le Puits Dans L'Ombre ###
