> -----Original Message----- > From: Andreas.Dilger@xxxxxxx [mailto:Andreas.Dilger@xxxxxxx] On Behalf Of Andreas Dilger > Sent: Wednesday, December 23, 2009 1:25 AM > To: Dubeyko, Vyacheslav > Cc: linux-ext4@xxxxxxxxxxxxxxx > Subject: Re: About strange behaviour of ext4 allocation algorithm > > On 2009-12-22, at 03:42, Vyacheslav Dubeyko wrote: >> I think that I found some strange behaviour in ext4 allocation >> algorithm. Maybe I wrong or use not actual code but such allocation >> policy is strange from my point of view. > > What kernel version are you using? I know Ted has looked into some allocation problems, specifically related to uninitialized groups, but I don't know > when they were fixed. I use kernel: 2.6.29.4-167.fc11.i686.PAE #1 SMP Wed May 27 17:28:22 EDT 2009 i686 i686 i386 GNU/Linux. >> First of all, I has created ext4 volume of 100 Mb in size (mkfs.ext4 >> -b 1024 -L ext4 /dev/sdb1). > > If you delete your file, without reformatting the filesystem, and then re-run the test, does it produce the same results? If not, then it is likely you are > seeing the problem with uninitialized groups that was fixed a month or two ago. After deletion of the file and re-run test (without reformatting the filesystem) I have slightly different extents' tree. Index block (depth of the tree = 1) has changed place and several extents has another sizes. But nature of the extents' sequence is the same. -- Vyacheslav Dubeyko <Vyacheslav.Dubeyko@xxxxxxxxxxx> Acronis -- -- 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
