On 4/30/12 1:18 PM, Daniel Drake wrote: ... > Trying the statfs approach (the fs in question is already mounted): > > # dumpe2fs -h /dev/mmcblk0p2 | grep "Block count\|Block size" > dumpe2fs 1.42 (29-Nov-2011) > Block count: 949248 > Block size: 4096 > > # stat -f / > File: "/" > ID: f09a7645207bdd68 Namelen: 255 Type: ext2/ext3 > Block size: 4096 Fundamental block size: 4096 > Blocks: Total: 934935 Free: 198205 Available: 188947 > Inodes: Total: 227824 Free: 133103 > > The numbers don't agree. > > (Not a big deal, since I can use the other 2 approaches you mentioned, > just wanted to point it out) Oh, that's because statfs on extN subtracts out the "overhead" from superblocks, block group descriptors, etc. I guess that's a reasonable interpretation of "/* total data blocks in file system */" but honestly I forgot that it did that... TBH, not entirely sure why it does. -Eric -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
