On Tue, Jan 11, 2005 at 12:05:08PM -0500, Christian Hudon wrote: > Hmm. If that's really the case, then the manpage for vgcreate is in need > of some serious updating. Some extracts: > > > -s, --physicalextentsize PhysicalExtentSize[kKmMgGtT] > Sets the physical extent size on physical volumes of this > volume > group. A size suffix (k for kilobytes up to t for > terabytes) is > optional, megabytes is the default if no suffix is > present. > Values can be from 8 KB to 16 GB in powers of 2. The > default of > 4 MB causes maximum LV sizes of ~256GB because as many > as ~64k > extents are supported per LV. In case larger maximum LV > sizes > are needed (later), you need to set the PE size to a > larger > value as well. Later changes of the PE size in an > existing VG > are not supported. > > ... and... > > To limit kernel memory usage, there is a limit of 65536 > physical > extents (PE) per logical volume, so the PE size determines the > maximum > logical volume size. The default PE size of 4MB limits a single > logi- > cal volume to 256GB (see the -s option to raise that limit). > There is > also (as of Linux 2.4) a kernel limitation of 2TB per block device. >
Good grief, so it does, sigh. /me pokes upstream -- patrick -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
