1 Reply Latest reply: May 10, 2012 12:54 PM by Charles Lamb RSS

    Delayed allocation on ext4 - any risks?

    bertold.kolics
      Is there any increased potential for data loss with EXT4 filesystem on Linux when using the filesystem with the noauto_da_alloc option (see http://en.wikipedia.org/wiki/Ext4#Delayed_allocation_and_potential_data_loss) . My understanding that Berkeley DB Java edition does not rename database log files as it is described in the referenced article. I understand the different durability options available. My question is whether Berkeley DB would behave - and potentially cause data loss - on EXT4 than on EXT3 with the same durability settings? Thank you.

      Edited by: user9283264 on May 10, 2012 10:03 AM
        • 1. Re: Delayed allocation on ext4 - any risks?
          Charles Lamb
          user9283264 wrote:
          Is there any increased potential for data loss with EXT4 filesystem on Linux when using the filesystem with the noauto_da_alloc option (see http://en.wikipedia.org/wiki/Ext4#Delayed_allocation_and_potential_data_loss) . My understanding that Berkeley DB Java edition does not rename database log files as it is described in the referenced article. I understand the different durability options available. My question is whether Berkeley DB would behave - and potentially cause data loss - on EXT4 than on EXT3 with the same durability settings? Thank you.

          Edited by: user9283264 on May 10, 2012 10:03 AM
          Hello,

          Neither of the two scenarios described in the wiki article occur with BDB JE so we don't think there is much of a potential problem

          Charles Lamb