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Konstantin_Grigoriev
n00b
Joined: 28 Jan 2008
Posts: 1
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 Posted: Mon Jan 28, 2008 11:38 am Post subject: readonly ext3 partition |
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I have ext3 partion mounted with "ro" flag. Once my gentoo was hardly halted because of power failure. After this my partition became inconsistent and I ran fsck manually and solved some errors. But some data on this partition became corrupted.
Why partition, which was mounted readonly, became inconsistent?
How can i prevent such situations? |
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mottmar
Tux's lil' helper
Joined: 13 Nov 2005
Posts: 103
Location: Genoa, Italy
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| Posted: Mon Jan 28, 2008 1:14 pm Post subject: RE:readonly ext3 partition |
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The kernel can write even on read-only-mounted partitions (for example, to update acces times). By the way, if it's read-only, I think you don't need the journal - which is meant to record the *changes* to the filesystem. ro usually means you want *no* changes. disabling access times also could help.
Anyway, the only way to avoid these unpleasant events is to get yourself a good UPS ;-)
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schachti
Advocate
Joined: 28 Jul 2003
Posts: 3765
Location: Gifhorn, Germany
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| Posted: Mon Jan 28, 2008 4:26 pm Post subject: Re: RE:readonly ext3 partition |
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| mottmar wrote: | Anyway, the only way to avoid these unpleasant events is to get yourself a good UPS  |
No - ext3 is quite safe if you use full journaling (mount option data=journal), there is no need for a UPS (at least your file system is sane after a power failure).
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