Hi,I am trying to format a 40TB filesystem with mkfs.ocfs2, but I get the following message:
# mkfs.ocfs2 -N 2 -T datafiles -n /dev/sdb1 mkfs.ocfs2 1.4.4 Dry run Filesystem Type of datafiles Label: Features: sparse backup-super unwritten inline-data strict-journal-super Block size: 4096 (12 bits) Cluster size: 1048576 (20 bits) Volume size: 41999217459200 (40053575 clusters) (10253715200 blocks) Cluster groups: 1242 (tail covers 23879 clusters, rest cover 32256 clusters) Extent allocator size: 63002640384 (15021 groups) Journal size: 33554432 Node slots: 2ERROR: jbd can only store block numbers in 32 bits. /dev/sdb1 can hold 1025371522 with JBD2 support, you can try formatting with the "-Jblock64" option to turn
Otherwise, consider increasing the block size or decreasing the device size.
Following this error, I ran the same command with the -Jblock64 option, and it worked fine:
mkfs.ocfs2 -Jblock64 -N 2 -T datafiles /dev/sdb1 mkfs.ocfs2 1.4.4 Cluster stack: classic o2cb Overwriting existing ocfs2 partition. Proceed (y/N): y Filesystem Type of datafiles Label: Features: sparse backup-super unwritten inline-data strict-journal-super Block size: 4096 (12 bits) Cluster size: 1048576 (20 bits) Volume size: 41999217459200 (40053575 clusters) (10253715200 blocks) Cluster groups: 1242 (tail covers 23879 clusters, rest cover 32256 clusters) Extent allocator size: 63002640384 (15021 groups) Journal size: 33554432 Node slots: 2 Creating bitmaps: done Initializing superblock: done Writing system files: done Writing superblock: done Writing backup superblock: 6 block(s) Formatting Journals: done Growing extent allocator: done Formatting slot map: done Writing lost+found: done mkfs.ocfs2 successful When attempting to mount, I get an error message: mount /dev/sdb1 /root/testmount.ocfs2: Invalid argument while mounting /dev/sdb1 on /root/test. Check 'dmesg' for more information on this error.
Dmesg info is the following :[511837.896762] (32104,2):ocfs2_initialize_super:2170 ERROR: Volume might try to write to blocks beyond what jbd can address in 32 bits.
[511837.896877] (32104,2):ocfs2_fill_super:1012 ERROR: status = -22So it would seem that I can format my filesystem with mkfs.ocfs2 from the ocfs2-tools package, but not mount it with mount.ocfs2 from the same package ?
Any hints ? Regards, Stephane Versions : Debian 5.0.1Linux localhost 2.6.32-5-amd64 #1 SMP Sat Oct 30 14:18:21 UTC 2010 x86_64 GNU/Linux ii ocfs2-tools 1.4.4-3 tools for managing OCFS2 cluster filesystems
<<attachment: stephane_caminade.vcf>>
