Re: ext4 error when testing virtio-scsi & vhost-scsi

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Hi!

On Wed 27-07-16 15:58:55, Zhangfei Gao wrote:
> Hi, Michael
> 
> I have met ext4 error when using vhost_scsi on arm64 platform, and
> suspect it is vhost_scsi issue.
> 
> Ext4 error when testing virtio_scsi & vhost_scsi
> 
> 
> No issue:
> 1. virtio_scsi, ext4
> 2. vhost_scsi & virtio_scsi, ext2
> 3.  Instead of vhost, also tried loopback and no problem.
> Using loopback, host can use the new block device, while vhost is used
> by guest (qemu).
> http://www.linux-iscsi.org/wiki/Tcm_loop
> Test directly in host, not find ext4 error.
> 
> 
> 
> Have issue:
> 1. vhost_scsi & virtio_scsi, ext4
> a. iblock
> b, fileio, file located in /tmp (ram), no device based.
> 
> 2, Have tried 4.7-r2 and 4.5-rc1 on D02 board, both have issue.
> Since I need kvm specific patch for D02, so it may not freely to switch
> to older version.
> 
> 3. Also test with ext4, disabling journal
> mkfs.ext4 -O ^has_journal /dev/sda
> 
> 
> Do you have any suggestion?

So can you mount the filesystem with errors=remount-ro to avoid clobbering
the fs after the problem happens? And then run e2fsck on the problematic
filesystem and send the output here?

								Honza
-- 
Jan Kara <jack@xxxxxxxx>
SUSE Labs, CR
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