On Sat, 4 May 2013 14:01:46 +1200 Neil Matai <neil@xxxxxxxxxxxxx> wrote: > Hi all, > > Is it dangerous have an array assembled on two hosts at the same time? > Say I have servers A and B exporting devices a and b via ATA over > Ethernet or similar to hosts C and D. If a and b are components of an > array then both C and D automatically assemble the array as soon as > the components a and b are exported but is this safe (on the proviso > that only one of C or D is ever writing to the array at any time and > that there is no write-behind caching above the array device)? > Yes, it is dangerous. Both hosts will try to update the metadata and will trip over each other. NeilBrown
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