On 03/26/2010 01:52 PM, Arun Nair wrote: > Hi - > > (I apologize for the ext4 question in an ext3 mailer, but I couldn't > find a user list for ext4.) linux-ext4@xxxxxxxxxxxxxxx :) but that's ok. > Per my understanding, ext4 can support file sizes upto 16 TiB if you use > 4k blocks. I have a logical volume which uses ext4 with a 4k block size > but I am unable to create files that are 8TiB (8796093022208 bytes) or > larger. > > [root@camanoe] ls -l > total 8589935388 > -rw-rw---- 1 root root 8796093022207 2010-03-26 11:43 bigfile > > [root@camanoe] echo x >> bigfile > -bash: echo: write error: File too large Perhaps echo isn't using largefile semantics? Is this the first test you did, or is echo the simple testcase, and something else failed? It works for me on rawhide x86_64: create a file with blocks past 8T: # xfs_io -F -f -c "pwrite 8T 1M" bigfile wrote 1048576/1048576 bytes at offset 8796093022208 1 MiB, 256 ops; 0.0000 sec (206.313 MiB/sec and 52816.1750 ops/sec) echo more into it: # echo x >> bigfile it really is that big: # ls -lh bigfile -rw-------. 1 root root 8.1T Mar 26 14:13 bigfile I don't have an x86 box to test quickly; try something besides echo, is what I'd suggest - xfs_io would work, or probably dd (with conv=notrunc if you want to append) -Eric _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
