Re: init scripts problems ?

denis bonnenfant wrote:
> denis bonnenfant wrote:
> 
>> denis bonnenfant wrote:
>>
>>>> I've just checked the enbd_open() code and I see nothing suspicious
>>>> there _except_ maybe the "media check" that is launched in the kernel:
>>>>
>>>>         if (do_media_check) {
>>>>                         // PTB this invalidates buffers, if necessary
>>>>                         ENBD_INFO ("DISK CHECK wanted in open on 
>>>> device nd%s\n",
>>>>                                 lo->devnam);
>>>>                         lo->last_checked = jiffies;
>>>>                         check_disk_change(inode->i_bdev);
>>>>         }
>>>>
>>>>
>>>> It may be worth disabling that whole check and seeing what happens. As
>>>> I recall the kernel tries to read the partition table (the first
>>>> sectors) of the "disk" (enbd) and then adds the result to
>>>> /proc/partitions.
>>>
>>>
>>>
>>>>
>>>> But I'm not even sure the code sticks in OPEN, rather than at the first
>>>> read. The WCHAN value might indicate.
>>
>>
>>
>> OK, i can reproduce it, even with only one nbd device open.
>>
>> in this case, WCHAN is page_sync for one enbd-client, and select for 
>> the others.
> 
> 
> oups, it's sync_page !

and stext for the others