RE: Switched from ext2 to ext3...no fsck needed after crash?
nate schreef op zaterdag 26 april 2003 19:04:
> Willem-Jan Meijer said:
>> Hello all,
>>
>> I just switched from ext2 to ext3 because i've read you don't have to
>> fsck it after a crash (power supply failure) So I made a journal and
>> changed in /etc/fstab the ext2 to ext3 and i've done a reboot.
>>
>> When I do mount I see /dev/hda1 is mounted as ext3.
>> I just want to be sure...when I get a crash and the computer resets
>> itself...I don't have to do a forced fsck?
>
> not a fsck in the traditional sense, the journal has to be checked
> but that goes much much faster. if you had a lot of disk writes going
> on at the time of the failure it may take a bit of time but still
> probably 10-20x+ faster then a normal fsck.
>
> on my redhat 7.3 system with 5x9GB drives in hardware raid 5(1.5GB
> ram), it takes about 4-5 seconds to do a jorunal check after an
> unclean shutdown.
>
> much faster then ext2..and if you were around in the 2.0.x days ext2
> back then was REAAAAAAAAAAAAAAALY slow to fsck, I remmeber how happy
> I was to be able to upgrade to the newer ext2 format in the 2.2
> kernels it probably halved the fsck time for the system.
>
>
> nate
Well, I read 2 reactions now and I see there's still an fsck needed, but I
mean: in the ext2 fs you sometime have to do a forced check manually, so you
have to type a command. Not that problem, but i'm talking about an headless,
handless and footless box, wich is controlled remotely. When the system
doesn't boot, I can't login.
When there's a crash...do I still have to type a command? If yes --> is
there a filesystem where I don't have to type a command?
HTH,
-WJ
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