EXT4 internal format question

outside2010 · 03-16-2010, 10:26 AM

Hi,

Can both EXT4_FEATURE_INCOMPAT_META_BG and EXT4_FEATURE_INCOMPAT_FLEX_BG flags turn on the same time? If yes, I am wondering whether there is a correlation between the numbers of block groups in META group and FLEX group. Where are backups of superblock and group description table (GDT) stored in this case?

Thanks.

syg00 · 03-17-2010, 03:59 AM

Might be better posed on the ext4 mailing list(s) - see here.