Messages in this thread | | | Subject | Re: Overlay ramdisk on filesystem? | From | Erik Tews <> | Date | Fri, 16 Apr 2004 21:38:11 +0200 |
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Am Do, den 15.04.2004 schrieb Timothy Miller um 23:08: > I have a feeling that this may be a bit too off-topic, but I'm doing > some Linux and hardware performance tests, and some of the tests will > put the hardware into an unstable state which could get memory errors > which could cause filesystem corruption. > > I would like to know how I could overlay a RAM disk over a read-only > filesystem so that all new files and modified files end up in the RAM > disk, but old files are read from the disk. This way, when I reboot, > the disk reverts back.
This could be possible using a ramdisk, a filesystem on a disk (which could be a read only block device like a cdrom too), device-mapper and its snapshot-target. But I did not try yet.
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