As a matter of fact mount(and friends) can use any key/value pair supported by libblkid. In fact this includes Filesystem label, filesystem UUID, GPT partition label and GPT partition UUID. (LABEL/UUID for fs, PARTLABEL/PARTUUID for GPT partitions) Regards -Sven On Thu, October 2, 2014 21:56, Arno Wagner wrote: > and it claims that the GPT partition IDs can be used in fstab. > I cannot test anything with GPT, I just returned my only GPT > disk to MBR (ex. win8 netbook), because GPT and UEFI just is > too much hassle at this time and I do not use windows on that > device anyways. > > Arno > > > > On Thu, Oct 02, 2014 at 21:05:27 CEST, Boylan, Ross wrote: >> [Note this does not concern coming up with a unique code to identify >> encrypted partition as a type, the subject of a January thread.] >> >> In brief, can GPT partition UUIDs be used to identify partitions that >> will >> be the base for encrypted swap (i.e., no LUKS)? >> >> Background: >> >> My crypttab included >> # sda2 appears to lack a UUID >> sda2_crypt /dev/sda2 /dev/urandom >> cipher=aes-cbc-essiv:sha256,size=256,swap >> sdb2_crypt UUID=d0b3bdf0-8711-4780-a31f-2f296c1fea00 /dev/urandom >> cipher=aes-cbc-essiv:sha256,size=256,swap >> >> I added and moved around disks and this led to the wrong sda2 being used >> (a possibility mentioned in the FAQ). The UUID given for sdb2 does not >> exist, so that device was not created. >> >> The disks are GPT format, and each GPT partition has a UUID >> (http://en.wikipedia.org/wiki/GUID_Partition_Table#Features). Is it >> possible to use that? >> >> Since the partitions are swap they do not have a LUKS header to identify >> them. The FAQ suggests some work-arounds, but they are a bit awkward >> and >> seem likely to have some performance penalty. Also, my md device >> numbers >> have not been stable through my recent work, which involved alternating >> between old and new version of mdadm and creating new md devices. >> >> blkid does not report a UUID for the raw partitions, and parted does not >> print one out either. So I'm a bit baffled how to find it, and also >> have >> doubts that dm-crypt (or whatever handles crypttab) would be able to use >> the ids even if I found them. >> >> Thanks. >> Ross Boylan >> _______________________________________________ >> dm-crypt mailing list >> dm-crypt@xxxxxxxx >> http://www.saout.de/mailman/listinfo/dm-crypt > > -- > Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@xxxxxxxxxxx > GnuPG: ID: CB5D9718 FP: 12D6 C03B 1B30 33BB 13CF B774 E35C 5FA1 CB5D > 9718 > ---- > A good decision is based on knowledge and not on numbers. -- Plato > > If it's in the news, don't worry about it. The very definition of > "news" is "something that hardly ever happens." -- Bruce Schneier > _______________________________________________ > dm-crypt mailing list > dm-crypt@xxxxxxxx > http://www.saout.de/mailman/listinfo/dm-crypt > _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
