Re: [Clonezilla-live] drives with 4k sectors?

[Les M. <les...@gm...>]

On 6/3/2010 9:28 AM, Steven Shiau wrote:

>
>> Using clonezilla-live-20100521-lucid.iso it goes through the same
>> motions as it would with a 512 byte sector disk, duplicating the initial
>> offset of 63.  I don't think there is any way for it to tell the
>> difference, since the drive reports 512 byte sectors - but is slow
>> unless you write 8 at once on the right boundaries.
>>
> Could you please more info about this "512 byte sector disk"?

It's a Western Digital 'Sonic Blue' 750 gig laptop drive.  They've done 
approximately the same thing with their 'green' desktop drives.  Here's 
some generic info on the issue:
https://lwn.net/Articles/377895/

hdparm -I  reports it as a 512 byte physical/logical drive even though 
it has to do a read/modify/write unless you write 4k on the right 
boundaries.


>> But, something seems to be wrong with partclone's (v0.2.9) math. Right
>> now it is saying:
>> Elapsed   03:11:52
>> Remaining 01:47:25
>> Rate      235.94 MB/min
>>
>> But the progress bar says it is 6% done (which is probably about right).
>>
> What's the partition size? What's the used block space?

It's a 750 gig drive with 1 partition, about 75% used.  What I'm trying 
to do is enough of a corner case (cloning from a 512k to a 4k sector 
drive) that it might not be worth the trouble to investigate.  I thought 
it might work to use fdisk's expert mode to shift the beginning of the 
partition from 63 to 56 and then clone the partition instead of the 
disk, but that seemed even slower. I couldn't wait for either test to 
complete.  If I shift forward to the recommended 64, then the space will 
be smaller than the source I want to copy.

> Could you please post more info on the screen, something like here:
> http://clonezilla.org/clonezilla-live/doc/01_Save_disk_image/images/ocs-11-save-progress-2.png

It may be another week before I can boot this machine into 
clonezilla-live again.  How do I get the text display instead of the 
dialog box with the progress bar?

-- 
    Les Mikesell
     les...@gm...