Re: [Xen-devel] Xen 4.3 xl migrate " htree_dirblock_to_tree" on second host

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Sat, 2014-02-01 at 01:32 +0000, Miguel Clara wrote:
> I'm testing live migration without shared storage (I use LVM at both sides)
> 
> 
> Issuing "xl migrate" worked nice and the machine was migrated to the second 
> host
> 
> However I see this in the second host log:
> 
> [ 1502.563251] EXT4-fs error (device xvda1):
> htree_dirblock_to_tree:892: inode #136303: block 533250: comm
> run-parts: bad entry in directory: rec_len is smaller than minimal -
> offset=0(0), inode=0, rec_len=0, name_len=0
> Jan 31 17:17:01 remus-test kernel: [ 1502.563251] EXT4-fs error
> (device xvda1): htree_dirblock_to_tree:892: inode #136303: block
> 533250: comm run-parts: bad entry in directory: rec_len is smaller
> than minimal - offset=0(0), inode=0, rec_len=0, name_len=0
> 
> I also get errors like:
> -bash: /bin/ping: cannot execute binary file
> 
> Is this to be expect on using none shared storage?

Yes. If the underlying disk is not the same device between both hosts
then all bets are off and all sorts of bad things will be happen. Think
about it -- what would you expect to happen to an OS if a disk suddenly
started returning completely different data to what was written to it.

What you have seen seems like a plausible outcome.

Ian.


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