Description of problem: [this is on rawhide: mke2fs 1.41.4 (27-Jan-2009) Using EXT2FS Library version 1.41.4 ] FWIW, I was trying to create an ext4 file system with more than 2^32 blocks to demonstrate a parted bug fix, but with the particular device I was using, I couldn't even create one with 2^31-1 blocks. When I try to create an ext4 file system specifying both block size and the number of blocks, the size of the underlying device should not matter, as long as it is large enough. However, when the underlying device too large, it fails like this: Set-up: Create a 10TB sparse device called /dev/mapper/s1 with /dev/sdb6 (just ~20GB) for backing store: N=$(echo '10*2*1024^3'|bc) echo "0 $N zero" | dmsetup create zero1 echo "0 $N snapshot /dev/mapper/zero1 /dev/sdb6 p 128" | dmsetup create s1 Try to create an ext4 file system with 2^31-1 1024-byte blocks: (note that I specify an explicit number of blocks) # mkfs.ext4 -b 1024 /dev/mapper/s1 $(echo '2*1024^3-1'|bc|tee /dev/tty) 2147483647 mke2fs 1.41.4 (27-Jan-2009) mkfs.ext4: Size of device /dev/mapper/s1 too big to be expressed in 32 bits using a blocksize of 4096. [Exit 1] I can understand failing like that when the "blocks-count" argument is omitted, because then we're asking mkfs.ext4 to use the entire device. Version-Release number of selected component (if applicable): mke2fs 1.41.4 (27-Jan-2009) How reproducible: always Steps to Reproduce: see above Actual results: mkfs.ext4 fails Expected results: it succeeds Additional info:
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle. Changing version to '11'. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
Val has fixed this upstream, it's wending its way through Ted's branches: commit 7eca8515425e697e56cafafe3264bb915282751a Author: Valerie Aurora Henson <vaurora> Date: Mon Jun 1 16:15:40 2009 -0400 Fix bug in selecting fs type, resulting in 1K blocksize One of the previous 64-bit patches (20ce9ade: 64-bit mke2fs cleanup,top of the 'js/new-64-bit' branch) moved the fs type and feature detection code to precede the determination of the device size so that we could check the 64bit flag if the device size would overflow 32 bits. Unfortunately, the fs type code uses the device size to determine the default set of parameters, and since the device size wasn't set yet, it was clearly "small enough" to fit the floppy profile. The solution is a bit complex. One problem is that you can't set the blocks count to > 32 bits if the 64bit feature isn't enabled. So I created a function to automatically set the 64bit feature if necessary. After we parse the user supplied options, I check if the 64bit feature has been disabled and bail out then. Signed-off-by: Valerie Aurora Henson <vaurora> Signed-off-by: "Theodore Ts'o" <tytso>
Since Val actually fixed this one upstream I'm going to put it on her plate; Val, closing it as UPSTREAM is probably ok, although we should make sure it doesn't get lost, and to that end perhaps keeping it open would be good. maaaaaybe a regression test in e2fsprogs would be good? We could make a sparse 10T file on ext4 to do the test w/o needing dm .... Just a thought :) -Eric
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Fedora 11 changed to end-of-life (EOL) status on 2010-06-25. Fedora 11 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed.
Eh, just marking this CLOSED/RAWHIDE since it did get fixed upstream.