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On 01/19/08 07:35, Jan Willem Stumpel wrote:
> Александър Л. Димитров wrote:
>> Quoth Hugo Vanwoerkom:
>>> ext2. Never have used any other.
>> I seriously hope that this was a joke...
>
> Maybe it was, but I never used anything but ext2 either, and that
> is no joke. It has worked fine for many years. I often considered
> "upgrading" to ext3, but so far I've never taken this step. I
> expect this is the same for many "users of old".
>
> I am especially put off by the Wikipedia article on ext3. It gives
> a rather long list of "disadvantages". One of them ("No
> checksumming in journal") even sounds pretty frightening. The list
> of "advantages" is very short, and they are mostly advantages over
> Reiserfs and other non-ext2 systems, not advantages over ext2.
>
> But sometimes bugs in applications can cause a complete freeze of
> X, incl. keyboard and mouse. It happens to me about once a year,
> unfortunately also yesterday evening. In such a case there is
> nothing you can do but pull the plug. Then when you reboot, all
> sorts of alarming messages appear. By invoking fsck one can
> normally get the system to boot again, but there may be
> side-effects (e.g. my old iceweasel "history" was gone after the
> reboot yesterday).
>
> So now I am more or less ready to take the plunge. But I would
> still like some advice.
>
> 1. Is it true that ext3 always lets you recover smoothly after a
> "freeze and pull the plug", or after a power cut? Or are there
> still "ifs" and "buts"?
There are very few "always". Except "always make backups".
But I've never lost anything to a crash.
> 2. Is significant room on the disk (or partition) taken by the
> journal? By how much can I expect the disk capacity to be
> reduced?
1%, maybe. Only significant if you are running low on a disk.
> 3. It is said ext3 is "slow". Does this apply to writing only, or
> also to reading? I.e., is there a danger that when I play a
> film with mplayer, I'll get the dreaded message "Your system is
> TOO SLOW to play this"?
Slower. But it's been *MANY* years since I've gotten that kind of
message.
> 4. I have my whole Linux system, apart from swap (i.e. the root,
> and everything that branches off it, like /boot, /var, /usr)
> just on one logical partition. Can I still convert to ext3,
> possibly by using a Knoppix or Ubuntu CD-ROM to boot from?
Sure.
> 5. Where can I find reliable, step-by-step instructions for the
> conversion? There are several such instruction sites on the
> Web, but I am not sure they always agree.
"man tune2fs" is all you need. Specifically, option "-j". It's
that simple.
> PS: Kernel is 2.6.20-1-686
Doesn't matter.
- --
Ron Johnson, Jr.
Jefferson LA USA
"I'm not a vegetarian because I love animals, I'm a vegetarian
because I hate vegetables!"
unknown
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