Re: RAID5 on FreeBSD 6 or 7
Hey Peter, Is it vinum or gvinum (geom8) that is the utility to create a RAID5 volume..? Things like that gvinum lacks the 'stop' command etc.. makes me think that it's not production ready or that the source code has not matured enough. actually gvinum is production-ready, it only doesn't implement all the features of vinum. I've been using since 2006 and it works, but it is slow. I just played with it this weekend again, you can check http://nejc.skoberne.net/2008/11/gmirror-and-gvinum-on-the-same-drives/. However, as I said, gvinum is slow. I also run graid5 and some say it is pretty stable. I've been running it for a year on a non-production server and it works for me, but haven't seen it in action, when a drive fails or something. It is fast, though. See it's page on Wikipedia for more info. I'd use it more if it was part of official FreeBSD release, but for now it is only available as a patch (AFAIK). Bye, Nejc ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: 5 TB server
Hey, if it has to be single volume i would use gstripe, or if it should be protected somehow - graid3 or graid5, and use UFS. geom_raid5 is stable? If yes, how come it is not included in FreeBSD yet? Nejc ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: RAID 5 - serious problem
Hello, the drives to the other machine and try to make them online again. Do you think I should try? If I were you, I would first buy/get a XXX GB SATA drive, create a filesystem there and copy all three disks block-by-block as three separate files (which will be the size of the disks). This way you'll still have the backup of your screwed up drives somewhere in case something goes even more wrong. However, I don't think your data is *physically* lost. I am almost sure that it is still on that drives, only the metadata could be fscked up. Now how to get the data back is another thing. In worst case scenario you could analyze the specification of the metadata format for you controller and then write a C program which would somehow put the bits together again using syscalls. Bye, Nejc ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
FreeBSD reference installations?
Hello, is there any list of FreeBSD reference installations? Like a list of big companies that use FreeBSD as their core servers? Thanks, Nejc ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Sharing Outlook calendars via FreeBSD?
Hello, I am using a FreeBSD 5.3 server in a company with approx. 30 users. There is also a Samba server as a PDC and a mail server. The users would like to share their Outlook calendars. What are my options regarding having FreeBSD as a platform to do this? OpenGroupware is just for Linux and I can't find any documentation how to put it on FreeBSD (the linux-opengroupware port expired last year). Thanks, Nejc ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Restarting DSL connection without reboot?
Dear community, I am having continuous problems with ADSL connections and FreeBSD servers. I am running a few dozens of FreeBSD boxes and today in the morning a lot of them were without internet connectivity. Looks like our provider had some maintenance work or something. What happened: the tech guy at one of the customers first rebooted the server 2 times and then he called me. We tried together: 1. first we tried to ping an internet IP address and the reply was No buffer space available. After that we did killall -9 ppp until all the ppp processes died. After that we ran /etc/rc.d/ppp-user (it's a 5.3 box) again but the connection wouldn't come up (no route to host, when pinging). 2. After reboot everything worked as it should. I really don't like to reboot servers as soon as they lose DSL connectivity. Is there any proper way to reset the connection (network card?) so that the connection restores without a reboot? Previously I've been running Linux on these servers and at that time I didn't have these problems - a reset of modem would always resolve the problem. Mostly I am using rl network cards, if that's an helpful info, but somewhere I also have sis and others. My ppp.conf: default: set log Phase Chat LCP IPCP CCP tun command set ifaddr 10.0.0.1/0 10.0.0.2/0 SiOL: set device PPPoE:rl0 set authname user set authkey pass set dial set login set redial 5 0 add default HISADDR My ppp.linkup: MYADDR: !bg sh -c /sbin/pfctl -f /etc/pf.conf My rc.conf (ppp entries): ppp_enable=YES ppp_profile=SiOL ppp_mode=ddial ppp_nat=NO Thanks for your help, Nejc smime.p7s Description: S/MIME Cryptographic Signature
Re: State of gvinum RAID-5
Hi, I tried gvinum RAID-5 with a 5-Stable around the time when 5.1 or 5.2 was released (afair) and back then it basically sucked big time. Raid worked as long as nothing failed, but reconstructing a drive was somewhere between very painful and not possible. I agree. Now I will have to upgrade hardware soon, which means I could switch from NetBSD (and Raidframe) to FreeBSD (with gvinum) again. I would like to because NetBSD seems to have some kind of memory leak in connection with Samba and large or many files, but I'd rather have a somewhat unstable Samba than an unstable Raid, so what's the state of affairs? I have been running gvinum RAID-5 on a ProLiant machine for 6 months now and I hadn't had any problems so far. First I installed FreeBSD 5.4 at that time but the RAID array crashed when there was an unclean reboot. After that I installed FreeBSD 6.1 and for now (knock knock knock) everything looks to work fine. However, I hadn't had a disk crash yet so I can't tell what exactly happens when one of the disks dies. I also run Samba and NOD32fac viruschecking on the same server and it works just great. HTH, Nejc smime.p7s Description: S/MIME Cryptographic Signature
Copying to external USB2 disk causes panic
Hi, I just installed FreeBSD 6.1 to a Celeron 2.4GHz, 1GB RAM. I also attached a USB2 external disk drive (motherboard uses SiS chipset), because I would like to perform daily backups to this disk. It is a remote server and I am unable to look at the console - I can only provide dmesg output: [at boot time:] da0 at umass-sim0 bus 0 target 0 lun 0 da0: Maxtor 6 Y080P0 YAR4 Fixed Direct Access SCSI-0 device da0: 40.000MB/s transfers da0: 78167MB (160086528 512 byte sectors: 255H 63S/T 9964C) [...nothing special until here:] g_vfs_done():da0s1[WRITE(offset=65536, length=2048)]error = 5 g_vfs_done():da0s1[WRITE(offset=6144000, length=8192)]error = 5 g_vfs_done():da0s1[WRITE(offset=11176247296, length=16384)]error = 5 g_vfs_done():da0s1[READ(offset=11368939520, length=16384)]error = 5 g_vfs_done():da0s1[WRITE(offset=65536, length=2048)]error = 5 g_vfs_done():da0s1[WRITE(offset=6144000, length=8192)]error = 5 g_vfs_done():da0s1[WRITE(offset=11561631744, length=16384)]error = 5 g_vfs_done():da0s1[READ(offset=11368939520, length=16384)]error = 5 panic: softdep_deallocate_dependencies: dangling deps Uptime: 8h23m52s GEOM_MIRROR: Device gm0: provider mirror/gm0 destroyed. GEOM_MIRROR: Device gm0 destroyed. (da0:umass-sim0:0:0:0): Synchronize cache failed, status == 0xb, scsi status == 0x0 Cannot dump. No dump device defined. Automatic reboot in 15 seconds - press a key on the console to abort This happened after 1.8 GB of data was already copied to the external disk drive. Oh, and I am compressing the backup files on the fly. Any ideas what is causing this? Thanks. Nejc smime.p7s Description: S/MIME Cryptographic Signature
Memory information relations
Hi, I would like to know what are exact relations between these 3 memory information printouts: top: Mem: 157M Active, 127M Inact, 60M Wired, 25M Cache, 60M Buf, 125M Free Swap: 998M Total, 998M Free sysctl -a | grep Mem: Virtual Memory: (Total: 78781K, Active 798692K) Real Memory:(Total: 497676K Active 174300K) Shared Virtual Memory: (Total: 28884K Active: 22684K) Shared Real Memory: (Total: 13768K Active: 10812K) sysctl -a | grep mem: hw.physmem: 527667200 hw.usermem: 453668864 hw.realmem: 536608768 So I would like to understand exactly which number is the sum of other numbers here. I have already read this paper: http://www.absolutebsd.com/AbsoluteBSD18.pdf but still I don't even know exact relations between the numbers in top printout. Thanks, Nejc smime.p7s Description: S/MIME Cryptographic Signature
Page fault while in kernel mode
Hi, I am running 5.3-RELEASE on a P4 2.4GHz with 512 MB RAM. It is a normal PC hardware not a real server hardware. Today in the morning (while I was away from the console) kernel panicked and the output was Page fault while in kernel mode (the guy who wrote that down didn't write other information). The box was rebooted and the error appeared again in about 3 minutes. After second reboot everything seems to be back to normal. The load on this machine is quite low, about 0.1; it runs mail server, serves some web pages and does NAT via pf. Finally the question: what is more likely: that it is hardware which is causing troubles or that an upgrade to FreeBSD 5.5 (or eventually 6.1) would help? Or is there a third possibility? Thanks, Nejc smime.p7s Description: S/MIME Cryptographic Signature
No buffer space available error
Hello, I've been trying to solve this problem by myself for a long time now, but no luck. I run a few dozens of FreeBSD 5.3/5.4 machines, which serve as routers, NAT boxes, Apache, Postfix, OpenVPN, ... servers. Most of them are low-cost PC machines since they are usually deployed to SOHO environments and the loads are rather low. I am having problems with the No buffer space available error like this: Jul 18 08:49:36 Router openvpn[661]: write UDPv4: No buffer space available (code=55) so this is obviously when OpenVPN tries to send UDP packets. And also like this: Jun 23 06:27:38 Router pdns[2182]: Unable to send a packet to our recursing backend: No buffer space available when PowerDNS DNS server tries to do some recursive work. I have been searching Google for a solution and I found out that the error should appear when the mbuf (or sfbuf?) is full and that I can print the current buffer status with 'netstat -m'. Because the error would show up (and not only show up, but also block the network operability for that server) at random times, I set up the swatch daemon on all those servers, so that as soon as the error is logged in messages, I run this command: #!/usr/local/bin/bash LOG=/var/log/swatch.log datum=`date` echo == $datum === sockstat $LOG echo $LOG netstat -n -a $LOG echo $LOG netstat -m $LOG echo $LOG ps ax $LOG echo $LOG Even though the log was growing as I assumed, I couldn't find anything particulary interesting, because the netstat -m command issued by swatch (at the time of the error) still shows something like this: 2 mbufs in use 1/17088 mbuf clusters in use (current/max) 0/6/4528 sfbufs in use (current/peak/max) 2 KBytes allocated to network 0 requests for sfbufs denied 0 requests for sfbufs delayed 1819 requests for I/O initiated by sendfile 7578 calls to protocol drain routines I am not sure, but as I understand it, this means that the buffers are quite OK. What would be the proper way to debug this problem? This is happening on machines with various hardware, from good old Pentium I with 32 MB RAM up to P4 3GHz, 1GB RAM, various network cards (mostly rtl8139), with ADSL or VDSL, although the errors are very rare at the VDSL boxes (where the upstream bandwidth is substantially greater). So, usually the errors appear but the users don't bother really, so it looks like the problems goes away sometimes (the connection is restored), but sometimes reboot is needed. Thanks for your ideas. P.S.: If the output of the script above could be helpful, let me know, I can publish it somewhere. Cheers, Nejc ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
