My point was to understand if this action was taken by BTRFS or
automously by scsi.
>From your word it seems clear to me that this should go in
KERNEL_DEBUG level, instead of KERNEL_NOTICE
2018-03-02 16:18 GMT+01:00 David Sterba <dste...@suse.cz>:
> On Fri, Mar 02, 2018 at 12:37:49PM +0100, Menion wrote:
>> Is it really a no problem? I mean, for some reason BTRFS is
>> continuously read the HDD capacity in an array, that does not seem to
>> be really correct
> The message comes from SCSI:
> Reading drive capacity could be totally opaque for the filesystem, eg.
> when the scsi layer compares the requested block address with the device
> The sizes of blockdevices is obtained from the i_size member of the
> inode representing the block device, so there's no direct read by btrfs.
> You'd have better luck reporting that to scsi or block layer
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