>From: "Benjamin P. Grubin" <[EMAIL PROTECTED]>
>Date: Thu, 5 Jul 2001 19:46:54 -0400
>As of a month ago or so, there was some discussion that concluded it was
>unsafe to enable softupdates on a root partition. Is it safe to go back in
>the water there, now?
Well, despite the warnings, I've been running with soft updates turned
on for each UFS on my laptop; although there were some cases (around 5
or 6 weeks ago, if my time sense isn't totally screwed up) where
-CURRENT wouldn't stay up, and fsck was doing some Very Unpleasant
Things, I was able to cope OK.
However, I've configured the laptop in what is arguably a rather
peculiar way: I can boot from any of 3 slices, each of which has its
own / and /usr. (/var is common to all, and /usr/local, as well as
/home and /cvs are all symlinks in each to a common file system.)
Regardless of which slice is booted, each slice's file systems are
mounted and visible. There's more detail about that stuff at
http://www.catwhisker.org/~david/FreeBSD/laptop.html.
I've been running the box this way since early March, and have -STABLE
(from different days, or with other differences, such as experimental
code) on the 1st 2 slices, and -CURRENT on the 3rd. I've been tracking
each of -STABLE and -CURRENT daily (modulo a few cases where I couldn't
build -CURRENT a while back).
Thus, I have some levels of fallback that a more conventional layout might
not have. (I also have some additional exposure, since a
suitably-corrupted "fsck" could trash everything.) But one of my purposes
here is to try things out & try to help identify (& fix) any problems I
see.... :-}
Anyhow:
m147[1] uname -a
FreeBSD m147.whistle.com 5.0-CURRENT FreeBSD 5.0-CURRENT #60: Thu Jul 5 09:27:4
9 PDT 2001 [EMAIL PROTECTED]:/common/C/obj/usr/src/sys/LAPTOP_30W i386
m147[2] df -k
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/ad0s3a 158783 79807 66274 55% /
devfs 1 1 0 100% /dev
/dev/ad0s1a 158783 41766 104315 29% /S1
/dev/ad0s1e 1870791 791927 929201 46% /S1/usr
/dev/ad0s2a 158783 41839 104242 29% /S2
/dev/ad0s2e 1870791 813249 907879 47% /S2/usr
/dev/ad0s3e 1870751 767973 953118 45% /usr
/dev/ad0s3g 1016303 32365 902634 3% /var
/dev/ad0s3h 10277074 5458487 3996422 58% /common
procfs 4 4 0 100% /proc
/dev/md10c 520140 444 478088 0% /tmp
m147[3] swapinfo
Device 1K-blocks Used Avail Capacity Type
/dev/ad0s3b 1048448 4688 1043760 0% Interleaved
m147[4] mount
/dev/ad0s3a on / (ufs, local, soft-updates)
devfs on /dev (devfs, local)
/dev/ad0s1a on /S1 (ufs, local, soft-updates)
/dev/ad0s1e on /S1/usr (ufs, NFS exported, local, soft-updates)
/dev/ad0s2a on /S2 (ufs, local, soft-updates)
/dev/ad0s2e on /S2/usr (ufs, NFS exported, local, soft-updates)
/dev/ad0s3e on /usr (ufs, NFS exported, local, soft-updates)
/dev/ad0s3g on /var (ufs, local, soft-updates)
/dev/ad0s3h on /common (ufs, NFS exported, local, soft-updates)
procfs on /proc (procfs, local)
/dev/md10c on /tmp (ufs, local, soft-updates)
m147[5] sudo boot0cfg -v ad0
# flag start chs type end chs offset size
1 0x00 73: 0: 1 0xa5 349:239:63 1103760 4188240
2 0x00 350: 0: 1 0xa5 626:239:63 5292000 4188240
3 0x80 627: 0: 1 0xa5 1023:239:63 9480240 29589840
4 0x00 0: 1: 1 0xa0 72:239:63 63 1103697
version=1.0 drive=0x80 mask=0x7 ticks=182
options=nopacket,update,nosetdrv
default_selection=F3 (Slice 3)
Cheers,
david
--
David H. Wolfskill [EMAIL PROTECTED]
As a computing professional, I believe it would be unethical for me to
advise, recommend, or support the use (save possibly for personal
amusement) of any product that is or depends on any Microsoft product.
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