On 06/26/2016 05:39 AM, Charles Cazabon wrote: > Hi, > > I'm currently initializing a fairly large LUKS crypt device, about 33TiB. > I've done this before, but not for quite a while, so I can't remember how long > it normally takes. My current cryptsetup invocation has been running for > about 24 hours, taking 100% of one CPU core for that entire time. If there's > I/O happening, iostat isn't showing it. > > If `cryptsetup luksFormat` has to write the entire contents of the underlying > block device, then this length of time is reasonable - but I don't recall if > it has to do that. No, format doesn't write the whole device. Can you please post output of running commant with added --debug switch? (Just up to point it starts to eat CPU cycles.) (I think it loops in PBKDF2 benchmark, I have seen some unexpected breakage here with recent kernel, but without debug log it is just guess.) > Is this long runtime normal for initialization of a device of this size? No. If the default iteration time (1 or 2 seconds) is not changes, format should be done in max 4-5 seconds. Thanks, Milan _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
