Re: dmesg flooded with "Very big device. Trying to use READ CAPACITY(16)" with 8TB HDDs

On Thu, Mar 08, 2018 at 12:18:04PM +0100, Menion wrote: > Actually this path can be taken in few occurrency > > 1) device probe, only when the device is plugged or detected the first time > 2) revalidate_disk fops of block device > > Is it possible that BTRFS every 5 minutes call the

Re: dmesg flooded with "Very big device. Trying to use READ CAPACITY(16)" with 8TB HDDs

Actually this path can be taken in few occurrency 1) device probe, only when the device is plugged or detected the first time 2) revalidate_disk fops of block device Is it possible that BTRFS every 5 minutes call the revalidate_disk? 2018-03-08 11:16 GMT+01:00 Menion : > Hi

Re: dmesg flooded with "Very big device. Trying to use READ CAPACITY(16)" with 8TB HDDs

Hi again I had a discussion in linux-scsi about this topic My understanding is that it is true that the read_capacity is opaque to the filesystem but it is also true that the scsi layer export two specific read_capacity ops, the read10 and read16 and the upper layers shall select the proper one,

Re: dmesg flooded with "Very big device. Trying to use READ CAPACITY(16)" with 8TB HDDs

Thanks 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 Bye 2018-03-02 16:18 GMT+01:00 David Sterba : > On Fri, Mar 02, 2018 at 12:37:49PM

Re: dmesg flooded with "Very big device. Trying to use READ CAPACITY(16)" with 8TB HDDs

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:

Re: dmesg flooded with "Very big device. Trying to use READ CAPACITY(16)" with 8TB HDDs

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 Bye 2018-02-26 11:07 GMT+01:00 Menion : > Hi all > I have recently started to operate an array of 5x8TB HDD (WD RED) in RAID5 >