Libra Can a power outage when connected to computer corrupt DB?

ownedbycats · Yesterday, 09:59 AM

Last night, power outage at almost exact moment I plugged Kobo into PC.

When I plugged in today, got a "there's a problem with this drive..." message. When disconnect, all sideloaded books re-imported.

I plugged in again, restored dates via Kobo Utilities, unplugged and everything imported again. Then I tried restoring to my last good backup but restoring the sideloaded book dates were still wrong and updating metadata with Kobo Utilities not fixed.

I finally logged out and logged in. I put back my events table and imported dates everything's good now.

Any idea? I find it strange that the backups were weird too, maybe another file affected it.

Aleron Ives · Yesterday, 05:32 PM

Yes, if the power goes out, you can't safely eject, and the database could become corrupt from that.

DNSB · Yesterday, 08:20 PM

I have to agree with @Aleron Ives. If a write is in progress when the power went out, you will almost certainly have database corruption. Even if no write is in progress, there is a smaller chance of corruption. Think of it as equivalent to pulling the USB cable out without doing a safely eject.

Yesterday, 09:59 AM	#1
ownedbycats Custom User Title Posts: 11,386 Karma: 79699999 Join Date: Oct 2018 Location: Canada Device: Kobo Libra H2O, formerly Aura HD	Can a power outage when connected to computer corrupt DB? Last night, power outage at almost exact moment I plugged Kobo into PC. When I plugged in today, got a "there's a problem with this drive..." message. When disconnect, all sideloaded books re-imported. I plugged in again, restored dates via Kobo Utilities, unplugged and everything imported again. Then I tried restoring to my last good backup but restoring the sideloaded book dates were still wrong and updating metadata with Kobo Utilities not fixed. I finally logged out and logged in. I put back my events table and imported dates everything's good now. Any idea? I find it strange that the backups were weird too, maybe another file affected it.

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Yesterday, 05:32 PM	#2
Aleron Ives Wizard Posts: 1,792 Karma: 16583650 Join Date: Sep 2022 Device: Kobo Libra 2	Yes, if the power goes out, you can't safely eject, and the database could become corrupt from that.

Yesterday, 08:20 PM	#3
DNSB Bibliophagist Posts: 48,673 Karma: 174510110 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	I have to agree with @Aleron Ives. If a write is in progress when the power went out, you will almost certainly have database corruption. Even if no write is in progress, there is a smaller chance of corruption. Think of it as equivalent to pulling the USB cable out without doing a safely eject.

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