Bugs item #302454, was opened at 2005-11-03 11:36 You can respond by visiting: http://alioth.debian.org/tracker/?func=detail&atid=410685&aid=302454&group_id=30287
Category: None Group: None Status: Open Resolution: None >Priority: 4 Submitted By: Vince McIntyre (xipmix-guest) >Assigned to: Leslie P. Polzer (dejari-guest) Summary: RFE: documentation of upper size limits for filesystems & partitions Initial Comment: Hi (before submitting this I did several searches through parted-1.6.24/doc/parted.info. I couldn't find much.) Given the number of filesystems and partition types that parted supports this improvement will take a while to do. But now that 1 Tbyte disks are getting common and multi-Tb raid systems are no longer rare, I think it is necessary to at least document the following: * the 2Tbyte size limitations in msdos disklabels, * why GPT disklabels are useful (what is their upper limit) * ext2 filesystem limitations at 2Tbyte (actually 2^31 blocks, allowed blocksizes are 1k,4k,8k) * upper size limits of FAT32 * the limits are not just due to parted, the OS kernel and in some cases the hardware disk controller has a role to play too (CHS, LBA addressing schemes) * and then there are the bootable partition size limits... The main focus here should be what parted's known limits are, ie if you have the right h/w to get this big, parted will work correctly. It would be useful to write some tests to check for regresssions in parted at the 2Tbyte boundary. That's a lot of data to lose... Just publishing the results of tests you conduct, with an explicit "no guarantee" statement about other people's hardware, would be useful. A second question: does parted use mke2fs from e2fsprogs or its own code? e2fsprogs currently does not really support filesystems > 2Tbyte. (http://e2fsprogs.sourceforge.net/e2fsprogs-release.html#1.38) Some reference links - http://en.wikipedia.org/wiki/GUID_Partition_Table http://en.wikipedia.org/wiki/Hard_drives http://en.wikipedia.org/wiki/Logical_block_addressing http://www.allensmith.net/Storage/HDDlimit/Address.htm (this gives a good table showing CHS addressing limitations) ---------------------------------------------------------------------- >Comment By: Leslie P. Polzer (dejari-guest) Date: 2005-11-12 19:33 Message: Logged In: YES user_id=12119 Parted has own code for ext2 creation, but I don't know whether some was taken from e2fsprogs. Will check. ---------------------------------------------------------------------- You can respond by visiting: http://alioth.debian.org/tracker/?func=detail&atid=410685&aid=302454&group_id=30287 _______________________________________________ Bug-parted mailing list [email protected] http://lists.gnu.org/mailman/listinfo/bug-parted
