On Wednesday, November 15, 2017 at 2:19:09 PM UTC+2, c...@mail.ru wrote: > > I've heard about it if occur power interruption then my BBB is damage at > once. Is it really necessary only UPS or supercapacitor for this? >
I personally haven't witnessed any damage to hardware. The ext4 file system, however, can become corrupt if the power loss occurs at an unfortunate moment. I've seen that happen 6-7 times on this year on some 10-s of devices which get their power disconnected every day. So far I've implemented following software workarounds: 1. Add nodelalloc as mount option. This should reduce probability of FS corruption according to http://www.pointsoftware.ch/en/4-ext4-vs-ext3-filesystem-and-why-delayed-allocation-is-bad/ 2. Add "fsck.mode=force fsck.repair=yes" to the kernel boot arguments. This will enforce FS checks on every boot and fix any problems found. I have no evidence on the effectiveness of workaround nr 1, but nr 2 seems to alleviate the problem significantly. I've had no dead devices since. -- Kind regards, Tarmo Kuuse -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/abebe697-a913-4652-b1f6-690b3bfaaae0%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
