Re: Maximum Number of USB Mass Storage Devices
Thanks David. My question was specific to FreeBSD's limitations rather than USB limitiations. You're not going to get hundreds of them on a single bus, whether it's FreeBSD's limitation or USB's. On 19/02/2010, David King dk...@ketralnis.com wrote: I have a requirement to connect a large number of USB bus powered external hard disks to a FreeBSD 8.0 system. I am talking about hundreds of them. The USB spec itself limits to 127 devices per bus, including hubs (and including the internal hub-like device on many busses). http://en.wikipedia.org/wiki/Universal_Serial_Bus#Overview I am aware of the power and bus limitations and intend to use power hubs and multiple server USB ports to overcome this issue. My question is this: Does FreeBSD 8.0-RELEASE have an operating system limitation on the number of USB storage devices I can connect and mount. Thanks. Patrick Collins -- Patrick Collins +61 419 712 581 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
[SOLVED]Re: User Directories On FreeBSD 8.0-RELEASE
Sorry this hasn't been made clear, seems that the list is dropping some of my emails, but this issue has been solved. I'll post the answer here and hopefully the list will pick it up this time (or at least deliver it to me so I know it's been delivered): On 02/19/10 03:05, Matthew Seaman wrote: If you're getting 403 permission denied errors trying to access userdirs, then the problem lies within the apache configuration. What you need to do is configure the permissions based on the home directory path returned from getpwent() -- by default under FreeBSD that's /home/user1/ Nevermind that much of the time /home is a symlink to /usr/home -- it's the path returned from the passwd file that apache uses for comparison, long before trying to resolve any symlinks and open anything on the hard-drive. I had defined the path as Directory /usr/home/user1/public_html since I knew that /home was a symlink to /usr/home and did not want to take the chance of Apache having problems following the symlink. I didn't realize that Apache takes the path from getpwent(). I now have Apache configured and working properly. As for the user:group setting, that was something Apache set itself when installed (non-ports version, since the ports version wouldn't start for me with even just the default httpd.conf and no edits at all). I can change that and most likely will if it's very bad to have Apache running as daemon:daemon In case no one saw before, I would like once again to thank everyone for their help. -- Yours In Christ, PIT Emails are not formal business letters, whatever businesses may want. signature.asc Description: OpenPGP digital signature
Re: FreeBSD File Server with ZFS
On 18 February 2010 11:24, Christian Baer christian.b...@uni-dortmund.dewrote: krad schrieb: On another point make sure your p4 has plenty of ram preferably 4gb, but at least 2 Exactly what good will that much RAM do for a 32Bit-CPU? Regards, Chris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org not sure what your point is? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
strange disk activity
Hello List, I've got a very strange disk activity: - % iostat -xw60 da0 extended device statistics device r/s w/skr/skw/s wait svc_t b da0 43.2 204.4 971.9 10917.20 30.7 30 extended device statistics device r/s w/skr/skw/s wait svc_t b da05.1 274.672.7 15206.20 50.4 27 extended device statistics device r/s w/skr/skw/s wait svc_t b da08.1 271.1 117.0 14827.80 51.1 29 extended device statistics device r/s w/skr/skw/s wait svc_t b da09.9 304.6 184.5 16814.7 31 64.6 33 extended device statistics device r/s w/skr/skw/s wait svc_t b da06.6 276.1 134.1 15184.10 36.6 29 extended device statistics device r/s w/skr/skw/s wait svc_t b da0 13.3 336.9 268.5 19073.20 36.4 36 ^C % iostat -xw1 da0 extended device statistics device r/s w/skr/skw/s wait svc_t b da0 43.0 204.7 968.6 10937.50 30.7 30 extended device statistics device r/s w/skr/skw/s wait svc_t b da06.0 2.0 239.832.00 3.0 2 extended device statistics device r/s w/skr/skw/s wait svc_t b da03.0 55.965.9 895.10 3.8 18 extended device statistics device r/s w/skr/skw/s wait svc_t b da0 29.0 286.7 1212.8 18221.80 39.7 42 extended device statistics device r/s w/skr/skw/s wait svc_t b da05.0 309.7 223.8 18589.31 0.6 6 extended device statistics device r/s w/skr/skw/s wait svc_t b da00.0 21.0 0.0 335.70 8.0 17 extended device statistics device r/s w/skr/skw/s wait svc_t b da00.0 286.7 0.0 18221.50 0.7 4 extended device statistics device r/s w/skr/skw/s wait svc_t b da05.0 571.477.9 36412.20 1.3 22 extended device statistics device r/s w/skr/skw/s wait svc_t b da04.0 446.628.0 28419.4 32 0.8 16 extended device statistics device r/s w/skr/skw/s wait svc_t b da0 32.0 1005.0 411.6 26757.6 68 37.8 91 extended device statistics device r/s w/skr/skw/s wait svc_t b da0 25.0 189.8 879.1 11972.21 266.8 103 extended device statistics device r/s w/skr/skw/s wait svc_t b da05.0 5.079.9 175.80 11.5 11 ^C - If I'm not mistaken it's approx. 15Mb/sec. Which means more than 1000 Tb a day! How can I find which program is trashing the disk? The system is FreeBSD-7.0 with 15 jails. Thanks for your help. -- WBR, Boris Samorodov (bsam) Research Engineer, http://www.ipt.ru Telephone Internet SP FreeBSD Committer, http://www.FreeBSD.org The Power To Serve ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: NetBSD 5.0 looks cool
On Thu, 18 Feb 2010 07:32:20 -0800 (PST), Abdullah Ibn Hamad Al-Marri wearab...@yahoo.ca wrote: Giorgos Keramidas keram...@ceid.upatras.gr wrote: NetBSD needs a *very* minimal set of POSIX tools to build, e.g. you can get away with an sh(1) utility and a pretty basic make(1) tool. They have really done a magnificent job at constructing a build system that can bootstrap itself from a tiny set of build tools. FreeBSD also has _some_ of the necessary build glue to do similar sort of stuff, but AFAIK we only support cross-building from one FreeBSD architecture to another FreeBSD architecture. So you need to have at least *some* version of FreeBSD to build another. How about these bench vs FreeBSD?! http://www.netbsd.org/~ad/50/img11.html http://www.netbsd.org/~ad/50/img13.html http://www.netbsd.org/~ad/50/img15.html NetBSD 5.0 is indeed a major step forward for NetBSD. This presentation was what convinced me to give NetBSD a try back when 5.0 came out. I have been running it at home for a while now. The only systems I have at home right now are FreeBSD and NetBSD. There are both nice systems; I like both of them and it's very nice to see how BSD is definitely *not* dying by using the various BSDs and seeing how they keep moving forward :-) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: strange disk activity
In the last episode (Feb 20), Boris Samorodov said:
Hello List,
I've got a very strange disk activity:
-
% iostat -xw60 da0
extended device statistics
device r/s w/skr/skw/s wait svc_t b
da0 43.2 204.4 971.9 10917.20 30.7 30
extended device statistics
device r/s w/skr/skw/s wait svc_t b
da05.1 274.672.7 15206.20 50.4 27
If I'm not mistaken it's approx. 15Mb/sec. Which means more than 1000 Tb a
day!
How can I find which program is trashing the disk? The system is
FreeBSD-7.0 with 15 jails. Thanks for your help.
Something like this would be a good start:
dtrace -n 'syscall::write:entry { @dist[pid,execname] = sum(arg2); }'
Let it run a few seconds, then hit ^C, and it will print the total bytes
written by each process during that period. You may also have to trace
writev and pwrite, since FreeBSD's dtrace doesn't include the sysinfo
provider that would let you count them all at once.
Data written to swap or mmap'ped files won't register here, but most heavy
writes aren't done with mmap.
--
Dan Nelson
dnel...@allantgroup.com
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IWN/IWNFW 4965
I'm on a FreeBSD 8.0-RELEASE i396 system. And i am experiencing a lot of packet loss and instability with this driver. I've noticed that the transfers rate keeps jump around from 1Mbps to its respective level. My connection to the AP is stable, but the data-flow isn't. Ive been trying to days to fix this now, and I'm just about to give up now. I have patched the kernel, updated the driver. Done some diagnostics. But I'm completely lost on this matter. Just throwing this out there in case some one is/has experienced the same with this driver. Regards Backup -- In a world without walls and fences, who needs windows and gates. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: strange disk activity
On Sat, 20 Feb 2010 14:26:15 -0600 Dan Nelson wrote:
In the last episode (Feb 20), Boris Samorodov said:
Hello List,
I've got a very strange disk activity:
-
% iostat -xw60 da0
extended device statistics
device r/s w/skr/skw/s wait svc_t b
da0 43.2 204.4 971.9 10917.20 30.7 30
extended device statistics
device r/s w/skr/skw/s wait svc_t b
da05.1 274.672.7 15206.20 50.4 27
If I'm not mistaken it's approx. 15Mb/sec. Which means more than 1000 Tb a
day!
How can I find which program is trashing the disk? The system is
FreeBSD-7.0 with 15 jails. Thanks for your help.
Something like this would be a good start:
dtrace -n 'syscall::write:entry { @dist[pid,execname] = sum(arg2); }'
Let it run a few seconds, then hit ^C, and it will print the total bytes
written by each process during that period. You may also have to trace
writev and pwrite, since FreeBSD's dtrace doesn't include the sysinfo
provider that would let you count them all at once.
Data written to swap or mmap'ped files won't register here, but most heavy
writes aren't done with mmap.
Thanks, Dan! Dtrace is really a way to go.
Unfortunately dtrace is not available at 7.0. That means that
the system should be updated to 7-STABLE.
Are there other possibilities meanwhile?
--
WBR, Boris Samorodov (bsam)
Research Engineer, http://www.ipt.ru Telephone Internet SP
FreeBSD Committer, http://www.FreeBSD.org The Power To Serve
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Re: strange disk activity
In the last episode (Feb 20), Boris Samorodov said:
On Sat, 20 Feb 2010 14:26:15 -0600 Dan Nelson wrote:
In the last episode (Feb 20), Boris Samorodov said:
Hello List,
I've got a very strange disk activity:
-
% iostat -xw60 da0
extended device statistics
device r/s w/skr/skw/s wait svc_t b
da0 43.2 204.4 971.9 10917.20 30.7 30
extended device statistics
device r/s w/skr/skw/s wait svc_t b
da05.1 274.672.7 15206.20 50.4 27
If I'm not mistaken it's approx. 15Mb/sec. Which means more than 1000 Tb a
day!
How can I find which program is trashing the disk? The system is
FreeBSD-7.0 with 15 jails. Thanks for your help.
Something like this would be a good start:
dtrace -n 'syscall::write:entry { @dist[pid,execname] = sum(arg2); }'
Let it run a few seconds, then hit ^C, and it will print the total bytes
written by each process during that period. You may also have to trace
writev and pwrite, since FreeBSD's dtrace doesn't include the sysinfo
provider that would let you count them all at once.
Data written to swap or mmap'ped files won't register here, but most
heavy writes aren't done with mmap.
Thanks, Dan! Dtrace is really a way to go.
Unfortunately dtrace is not available at 7.0. That means that
the system should be updated to 7-STABLE.
Are there other possibilities meanwhile?
ktrace -d -i -p 0 ; sleep 10 ; ktrace -C
, then run kdump -m64 and search for large numbers of writes in the output.
-d -i -p0 selects all current and future children of pid 0, which will
trace all processes. -m64 limits the I/O dump size to 64 bytes.
--
Dan Nelson
dnel...@allantgroup.com
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Re: strange disk activity
On Sat, 20 Feb 2010 23:56:24 +0300 Boris Samorodov wrote: Are there other possibilities meanwhile? Thanks to Chuck Swiger: % top -m io -- WBR, Boris Samorodov (bsam) Research Engineer, http://www.ipt.ru Telephone Internet SP FreeBSD Committer, http://www.FreeBSD.org The Power To Serve ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: strange disk activity
On Sat, 20 Feb 2010 15:48:45 -0600 Dan Nelson wrote: In the last episode (Feb 20), Boris Samorodov said: Are there other possibilities meanwhile? ktrace -d -i -p 0 ; sleep 10 ; ktrace -C , then run kdump -m64 and search for large numbers of writes in the output. -d -i -p0 selects all current and future children of pid 0, which will trace all processes. -m64 limits the I/O dump size to 64 bytes. Impressive! Thanks, Dan, I've got a real new tool. ;-) -- WBR, Boris Samorodov (bsam) Research Engineer, http://www.ipt.ru Telephone Internet SP FreeBSD Committer, http://www.FreeBSD.org The Power To Serve ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: strange disk activity
In the last episode (Feb 21), Boris Samorodov said: On Sat, 20 Feb 2010 23:56:24 +0300 Boris Samorodov wrote: Are there other possibilities meanwhile? Thanks to Chuck Swiger: % top -m io I used to use this, but zfs I/O stats aren't reported and I have no ufs filesystems anymore, so I forgot about it :) -- Dan Nelson dnel...@allantgroup.com ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
unabe to install linux compatibility on freebsd 8.0-R
Hello list, I'm following the instructions at http://www.freebsd.org/doc/handbook/linuxemu-lbc-install.html I tried to kldload the module: # kldload linux kldload: can't load /boot/kernel/linux.ko: Exec format error # kldstat Id Refs AddressSize Name 1 22 0x8010 846698 kernel 21 0x80947000 74a8 geom_concat.ko 31 0x8094f000 8308 ng_ubt.ko 43 0x80958000 154a0netgraph.ko 52 0x8096e000 12ff8ng_hci.ko 62 0x80981000 2d40 ng_bluetooth.ko 71 0x80a22000 a24 pflog.ko 81 0x80a23000 2bd2dpf.ko 91 0x80a4f000 a8ca fuse.ko 101 0x80a5a000 7d6 accf_http.ko 111 0x80a5b000 1ce accf_data.ko If I try to install the linux port: # cd /usr/ports/emulators/linux_base-f10 # make === linux_base-f10-10_2 linuxulator is not (kld)loaded. *** Error code 1 Stop in /usr/ports/emulators/linux_base-f10. Finally, if I try to install compatibility in the kernel, I get the error unknown option COMPAT_LINUX at the config phase. Can anyone help me please? # uname -p -r 8.0-RELEASE-p2 amd64 The system was built today. -- John - comp dot john at googlemail dot com OpenBSD firewall | FreeBSD desktop | Ubuntu Karmic laptop GPG: 0xF08A33C5 ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
No sounds with OpenOffice 3.1.1_1 slide shows...
Hi, I have compiled OpenOffice 3.1.1_1 using the port on FreeBSD i386 8.0-RELEASE, and there is no sound with slide shows. The sound works fine with vlc and with linux-f10-flashplugin-10.0r42 . What could be missing? I tested with another box running FreeBSD amd64 8.0-STABLE and I have the same problem... Thanks! ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Making installworld got stuck on SunFire v20z (Freebsd 8.0)
Lucas Wang wrote: I tried to install Freebsd 8.0 on one of our lab machines, which is SunFire v20z. After successfully installing it from CD, I followed the following steps trying to update the kernel and world: cvsup make buildworld make buildkernel make installkernel reboot mergemaster -p make installworld Everything was fine until the `make installworld` process run for a while and then got stuck, after that it won't respond to Ctrl-C. When I tried to login from another tty, it doesn't respond either. I even tried installing the machine from scratch several times, and at different times it got stuck when installing different libraries. I would really appreciate any ideas about why this could happen or how to solve it. If you have an AMD CPU of a recent generation, Try adding vm.pmap.pg_ps_enabled=0 to /boot/loader.conf and rebooting. This disables Superpages - there is a CPU bug on some of those. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: unabe to install linux compatibility on freebsd 8.0-R
On Sunday 21 February 2010 00:54:54 John wrote: Hello list, I'm following the instructions at http://www.freebsd.org/doc/handbook/linuxemu-lbc-install.html I tried to kldload the module: # kldload linux kldload: can't load /boot/kernel/linux.ko: Exec format error # kldstat Id Refs AddressSize Name 1 22 0x8010 846698 kernel 21 0x80947000 74a8 geom_concat.ko 31 0x8094f000 8308 ng_ubt.ko 43 0x80958000 154a0netgraph.ko 52 0x8096e000 12ff8ng_hci.ko 62 0x80981000 2d40 ng_bluetooth.ko 71 0x80a22000 a24 pflog.ko 81 0x80a23000 2bd2dpf.ko 91 0x80a4f000 a8ca fuse.ko 101 0x80a5a000 7d6 accf_http.ko 111 0x80a5b000 1ce accf_data.ko If I try to install the linux port: # cd /usr/ports/emulators/linux_base-f10 # make === linux_base-f10-10_2 linuxulator is not (kld)loaded. *** Error code 1 Stop in /usr/ports/emulators/linux_base-f10. Finally, if I try to install compatibility in the kernel, I get the error unknown option COMPAT_LINUX at the config phase. Can anyone help me please? # uname -p -r 8.0-RELEASE-p2 amd64 The system was built today. Somehow your linux.ko is broken, do you perhaps have WITHOUT_LINUX= in /etc/src.conf or /etc/make.conf? Check the last modification date of /boot/kernel/linux.ko, does it correspond (roughly) to the one from /boot/kernel/kernel? About the kernel option, try COMPAT_LINUX32. It's a documentation bug. -- Pieter de Goeje ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Problems With K3b
I'm trying to install k3b from ports so I might use my DVD super multi format drive (an HP 1040i; I've already added the necessary line to /boot/default/loader.conf for enabling dma) with either the gui or cli but during the install of libthai (which is a dependency of kimproxy which is a dependency of k3b) the configure script infinitely loops. Is anyone else having this issue? I was able to add it via pkg_add -r but encountered other problems. Apparently I hadn't compiled Qt with thread support and another required part of kdelibs failed on that part, so I deinstalled qt33 and began recompiling it with the intention of enabling thread support. The compile of Qt than proceeded to fail (I've long since closed the window but could retry it to get the specific messages if needed). I need Qt back because I have quite a few apps that require Qt installed (though I'm wanting to get rid of qwit, if anyone can recommend a /good/ Twitter client for FreeBSD, I'd appreciate a private mail with the recommendation). Using pkg_add for k3b isn't working because I'm using a newer version of some of it's dependencies and that apparently is causing problems (I should have never installed Xv, I had to upgrade jpeg from jpeg-7 to jpeg-8 and that upgrade has caused nothing but problems). I can really do without k3b since I do have the cli tools, but I'd like to resolve these issues (when I asked for help with flash, I was able to update my ports collection so I have the latest available as of yesterday) so that they aren't problems further on down the road. I realize now that I'm going to have to learn to use the port management tools to help prevent problems like this in the future and that's ok. This install is supposed to be a learning experience (even if this box has become my primary machine, unlike I had intended) and I am trying to learn. -- Yours In Christ, PIT Emails are not formal business letters, whatever businesses may want. signature.asc Description: OpenPGP digital signature
Dump questions
1. Using the -L flag to create a snapshot of the live running file system. Does this mean that a complete copy of the file system is written to .snap directory? So if the running file system is more than 50% full there will not be enough free space available to hold the duplicate image? Can dump recognize this situation and issue an error message? Is this the limiting factor that forces a user to use (single user mode) for running dump? 2. What is the worse that will happen if dump is run on live file system with out the -L flag? Can dump recognize this situation and issue an error message? 3. Can dump be told to only dump a particular directory tree? IE /var/log or /usr/port? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Making installworld got stuck on SunFire v20z (Freebsd 8.0)
Thanks for your reply. I'll give it a try. Lucas On Feb 20, 2010, at 5:00 PM, Ivan Voras wrote: Lucas Wang wrote: I tried to install Freebsd 8.0 on one of our lab machines, which is SunFire v20z. After successfully installing it from CD, I followed the following steps trying to update the kernel and world: cvsup make buildworld make buildkernel make installkernel reboot mergemaster -p make installworld Everything was fine until the `make installworld` process run for a while and then got stuck, after that it won't respond to Ctrl-C. When I tried to login from another tty, it doesn't respond either. I even tried installing the machine from scratch several times, and at different times it got stuck when installing different libraries. I would really appreciate any ideas about why this could happen or how to solve it. If you have an AMD CPU of a recent generation, Try adding vm.pmap.pg_ps_enabled=0 to /boot/loader.conf and rebooting. This disables Superpages - there is a CPU bug on some of those. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Dump questions
In the last episode (Feb 21), Aiza said: 1. Using the -L flag to create a snapshot of the live running file system. Does this mean that a complete copy of the file system is written to .snap directory? No; that would be a copy. Snapshots only copy blocks as they are modified on the parent filesystem, so their size is determined by how much data is modified since the snapshot was created. -- Dan Nelson dnel...@allantgroup.com ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Dump questions
3. Can dump be told to only dump a particular directory tree? IE /var/log or /usr/port? No. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Dump questions
Dan Nelson wrote: In the last episode (Feb 21), Aiza said: 1. Using the -L flag to create a snapshot of the live running file system. Does this mean that a complete copy of the file system is written to .snap directory? No; that would be a copy. Snapshots only copy blocks as they are modified on the parent filesystem, so their size is determined by how much data is modified since the snapshot was created. So how does this interact with the dump process? Dump start reading and writing its dump file and as the live system changes the changes are written to the .snap and when dump completes it overwrites it dump with the changes from the .snap??? How does this process work in detail? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: Dump questions
In the last episode (Feb 21), Aiza said: Dan Nelson wrote: In the last episode (Feb 21), Aiza said: 1. Using the -L flag to create a snapshot of the live running file system. Does this mean that a complete copy of the file system is written to .snap directory? No; that would be a copy. Snapshots only copy blocks as they are modified on the parent filesystem, so their size is determined by how much data is modified since the snapshot was created. So how does this interact with the dump process? Dump start reading and writing its dump file and as the live system changes the changes are written to the .snap and when dump completes it overwrites it dump with the changes from the .snap??? How does this process work in detail? Dump reads from the snapshot, which is guaranteed not to change while dump is running. When its done, dump deletes the snapshot file. Changes made after the dump has started will not be saved. This is the same as any other backup system that uses snapshots afaik; none try and catch up changes made while the backup itself is running. You could run another incremental dump right after the previous one, which would back up any changes since the first one. -- Dan Nelson dnel...@allantgroup.com ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
