97 messages in org.freebsd.freebsd-questionsRe: One or Four?| From | Sent On | Attachments |
|---|---|---|
| Robison, Dave | Feb 17, 2012 2:05 pm | |
| Chuck Swiger | Feb 17, 2012 2:17 pm | |
| Devin Teske | Feb 17, 2012 2:34 pm | |
| Maxim Khitrov | Feb 17, 2012 2:40 pm | |
| Douglas Carmichael | Feb 17, 2012 2:42 pm | |
| Polytropon | Feb 17, 2012 2:46 pm | |
| Jerry McAllister | Feb 17, 2012 2:48 pm | |
| Douglas Carmichael | Feb 17, 2012 2:50 pm | |
| Jerry McAllister | Feb 17, 2012 2:53 pm | |
| Da Rock | Feb 17, 2012 2:54 pm | |
| Devin Teske | Feb 17, 2012 3:11 pm | |
| Julian H. Stacey | Feb 17, 2012 3:19 pm | |
| Polytropon | Feb 17, 2012 3:22 pm | |
| Robison, Dave | Feb 17, 2012 3:24 pm | |
| Da Rock | Feb 17, 2012 3:29 pm | |
| Chris Hill | Feb 17, 2012 3:49 pm | |
| Chuck Swiger | Feb 17, 2012 3:55 pm | |
| Devin Teske | Feb 17, 2012 4:02 pm | |
| Robison, Dave | Feb 17, 2012 4:09 pm | |
| Devin Teske | Feb 17, 2012 4:11 pm | |
| Chuck Swiger | Feb 17, 2012 4:40 pm | |
| Devin Teske | Feb 17, 2012 4:54 pm | |
| Da Rock | Feb 17, 2012 4:54 pm | |
| Da Rock | Feb 17, 2012 4:59 pm | |
| Devin Teske | Feb 17, 2012 5:05 pm | |
| Devin Teske | Feb 17, 2012 5:09 pm | |
| Chuck Swiger | Feb 17, 2012 5:13 pm | |
| David Brodbeck | Feb 17, 2012 5:17 pm | |
| Da Rock | Feb 17, 2012 5:17 pm | |
| Doug Hardie | Feb 17, 2012 5:50 pm | |
| Erich Dollansky | Feb 17, 2012 6:08 pm | |
| Daniel Staal | Feb 17, 2012 6:16 pm | |
| Da Rock | Feb 17, 2012 7:16 pm | |
| Leslie Jensen | Feb 17, 2012 9:44 pm | |
| Lars Eighner | Feb 17, 2012 10:05 pm | |
| Robert Bonomi | Feb 17, 2012 10:32 pm | |
| Robert Bonomi | Feb 17, 2012 11:15 pm | |
| Erich Dollansky | Feb 17, 2012 11:47 pm | |
| Doug Hardie | Feb 17, 2012 11:54 pm | |
| Matthew Seaman | Feb 18, 2012 12:39 am | |
| Polytropon | Feb 18, 2012 2:12 am | |
| Polytropon | Feb 18, 2012 2:22 am | |
| Da Rock | Feb 18, 2012 2:43 am | |
| Damien Fleuriot | Feb 18, 2012 3:06 am | |
| Damien Fleuriot | Feb 18, 2012 3:10 am | |
| Matthew Seaman | Feb 18, 2012 3:23 am | |
| Da Rock | Feb 18, 2012 3:36 am | |
| Polytropon | Feb 18, 2012 3:39 am | |
| Da Rock | Feb 18, 2012 3:56 am | |
| Matthew Seaman | Feb 18, 2012 5:38 am | |
| Da Rock | Feb 18, 2012 5:47 am | |
| Matthew Seaman | Feb 18, 2012 6:28 am | |
| Robert Bonomi | Feb 18, 2012 6:45 am | |
| RW | Feb 18, 2012 6:54 am | |
| Da Rock | Feb 18, 2012 6:54 am | |
| Polytropon | Feb 18, 2012 8:26 am | |
| Jerry McAllister | Feb 18, 2012 1:06 pm | |
| Jerry McAllister | Feb 18, 2012 1:33 pm | |
| Michael Sierchio | Feb 18, 2012 2:45 pm | |
| Matthew Story | Feb 18, 2012 3:08 pm | |
| Daniel Staal | Feb 18, 2012 3:10 pm | |
| Michael Sierchio | Feb 18, 2012 3:31 pm | |
| Erich Dollansky | Feb 18, 2012 5:03 pm | |
| Jerry McAllister | Feb 18, 2012 6:30 pm | |
| Erich Dollansky | Feb 18, 2012 7:54 pm | |
| Carl Johnson | Feb 18, 2012 8:39 pm | |
| Erich Dollansky | Feb 18, 2012 9:26 pm | |
| Stephen Cook | Feb 18, 2012 11:21 pm | |
| Julian H. Stacey | Feb 19, 2012 6:29 am | |
| Daniel Staal | Feb 19, 2012 8:10 am | |
| parv | Feb 19, 2012 8:43 am | |
| Julian H. Stacey | Feb 19, 2012 10:37 am | |
| Da Rock | Feb 20, 2012 6:44 am | |
| Jerry McAllister | Feb 20, 2012 6:47 am | |
| Jerry McAllister | Feb 20, 2012 6:55 am | |
| Jerry McAllister | Feb 20, 2012 6:58 am | |
| Julian H. Stacey | Feb 20, 2012 8:14 am | |
| Jerry McAllister | Feb 20, 2012 8:34 am | |
| Devin Teske | Feb 20, 2012 8:36 am | |
| Julian H. Stacey | Feb 20, 2012 9:43 am | |
| Robison, Dave | Feb 20, 2012 1:43 pm | |
| Paul Mather | Feb 20, 2012 2:05 pm | |
| Erich Dollansky | Feb 20, 2012 6:09 pm | |
| Chip Camden | Feb 20, 2012 9:25 pm | |
| Erich Dollansky | Feb 20, 2012 9:40 pm | |
| Robert Bonomi | Feb 20, 2012 10:06 pm | |
| Chip Camden | Feb 20, 2012 10:19 pm | |
| Doug Hardie | Feb 20, 2012 10:52 pm | |
| Erich Dollansky | Feb 20, 2012 11:37 pm | |
| Erich Dollansky | Feb 20, 2012 11:43 pm | |
| Robert Bonomi | Feb 21, 2012 4:38 am | |
| Polytropon | Feb 21, 2012 7:18 am | |
| Jerry McAllister | Feb 21, 2012 7:56 am | |
| per...@pluto.rain.com | Feb 21, 2012 10:13 am | |
| David Brodbeck | Feb 21, 2012 11:47 am | |
| Erich Dollansky | Feb 21, 2012 4:43 pm | |
| Erich Dollansky | Feb 21, 2012 4:50 pm |
| Subject: | Re: One or Four? | |
|---|---|---|
| From: | Da Rock (free...@herveybayaustralia.com.au) | |
| Date: | Feb 17, 2012 4:54:43 pm | |
| List: | org.freebsd.freebsd-questions | |
On 02/18/12 10:40, Chuck Swiger wrote:
On Feb 17, 2012, at 4:11 PM, Devin Teske wrote:
However, for whatever reasons, the overwhelming majority of folks using MacOS
X don't have problems using a single root partition, and while they sometimes do
fill up their disks, that's a situation which they should be able to recover
from
without needing expert assistance. I don't recall having unusual issues in
running
a partition out of space under FreeBSD, either, or difficulty fixing things
afterwards--
Recipe for disaster:
1. You have a cron-job that pulls down /etc/master.passwd daily 2. Your cron-job also runs pwd_mkdb after "SUP"ing down /etc/master.passwd
Yes, I agree that this is a recipe for disaster; the reasons not very correlated
to disk space, however.
Even twenty years ago, handling this via YP/NIS or NetInfo would have made more
sense, and nowadays folks would be far more likely to use LDAP as the network
user database, instead of pushing system password database changes via SUP or
similar replication mechanism locally to individual hosts.
3. A program fills "/" 4. cron fires 5. pwd_mkdb can't generate databases because not enough room on filesystem 6. System can no longer be logged into
#5 does not imply #6: if pwd_mkdb can't build a temporary version to
/etc/pwd.db.tmp& /etc/spwd.db.tmp, it will exit with an error rather than
invoke rename(2) to replace the working version of the password database with
something that might be broken.
To be very specific, I would expect one to get:
"/: write failed, filesystem is full pwd_mkdb: /etc/pwd.db to /etc/pwd.db.tmp: No space left on device"
7. System is rebooted 8. Can't log in (not even as root) 9. Go into single-user mode 10. No space to work in
Sure... you can call it an "edge-case," but it's pretty common and this is only one of a myriad of ways we can reproduce the problem of filling-up "/" to cause major headaches.
I've never heard of such a thing happening to a real FreeBSD system in the past
decade or more. The closest match to the issue results in a failure of
adduser(8) or pw(8) to add new users, but existing users continued to work fine.
These are edge cases that _do_ happen - Linux (heaven forbid!) is reknown for the all /, and I've been unable to boot properly into it with a full disk. I had to use a live disk to rescue it which took hours thanks to the $%^&! lvm filesystem.
Its just so easy to run a multi partition as opposed to an all /. And how much does it cost/hurt to do it (especially given the inordinately large hdd's these days)? Next to nix (pardon the pun :) ). The reduction in problems for new users should be an incentive as well.
As for how quickly a disk can fill - I'm an expert :) I can fill a terabyte disk in a matter of hours with video and not notice. The transfers can be tricky to coordinate seeing as the disk fills faster than I can move the large files to another filesystem.
And I haven't even mentioned some of the games that I'm sure a novice desktop user will use...
You don't have to necessarily 'hose' the system to render it unusable. Just have some obscure program or service that requires something like a temp file or the like to stop it from working, and make it difficult to find whats wrong.
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