On Fri, 28 Jan 2011, Jochen Schulz wrote: > Henrique de Moraes Holschuh: > > On Fri, 28 Jan 2011, Alfonso Ruiz wrote: > >> The ST2000DL003 is 4096 bytes per sector, can this have problems with > >> squeeze? > > > > Squeeze tries to align everything to 1MB boundaries, so it shouldn't cause > > problems. > > Do you refer to the installer only, or does that apply to the usual > tools (parted/cfdisk, LVM, cryptseup) as well?
The installer, but get RC2 or newer. And up-to-date squeeze. fdisk will do the right thing, IF you press "u" and "c" first, to switch off the dos-brain-hemorrage default mode, and change to sectors. Alternatively, run it with fdisk -c -u. parted will do the right thing AFAIK, at least on DOS disklabels. cfdisk, I don't know. Switch to sector mode, and see whether it wants to create partitions at multiples of 2048 (i.e. 1MB) or not. cryptsetup does a 1:1 linear map, so it doesn't change alignment. I just checked mdadm source, and it aligns nicely on all metadata formats when creating a new array. It uses 1MB alignment when needed (formats 1.1 and 1.2). So, I stand corrected (I previously claimed mdadm would screw up the alignment on formats 1.1 and 1.2). lvm, well... it is actually pvcreate that is a problem. I am not sure it autodetects anything, you probably have to give it the proper --dataalignment option, but at least now it has that easy-to-use option and you don't have to play games with metadatasize. And nothing does anything sensible as far as alignment goes on GPT labels, last time I checked. -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20110128181732.ga4...@khazad-dum.debian.net
