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Date:   Wed, 20 Sep 2023 21:57:56 -0700
From:   Luis Chamberlain <mcgrof@kernel.org>
To:     Pankaj Raghav <p.raghav@samsung.com>
Cc:     Dave Chinner <david@fromorbit.com>,
        Pankaj Raghav <kernel@pankajraghav.com>,
        linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        da.gomez@samsung.com, akpm@linux-foundation.org,
        linux-kernel@vger.kernel.org, willy@infradead.org,
        djwong@kernel.org, linux-mm@kvack.org, chandan.babu@oracle.com,
        gost.dev@samsung.com, riteshh@linux.ibm.com
Subject: Re: [RFC 00/23] Enable block size > page size in XFS
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On Wed, Sep 20, 2023 at 08:00:12PM -0700, Luis Chamberlain wrote:
> https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git/log/?h=large-block-linus
> 
> I haven't tested yet the second branch I pushed though but it applied without any changes
> so it should be good (usual famous last words).

I have run some preliminary tests on that branch as well above using fsx
with larger LBA formats running them all on the *same* system at the
same time. Kernel is happy.

root@linus ~ # uname -r
6.6.0-rc2-large-block-linus+

root@linus ~ # mount | grep mnt
/dev/nvme17n1 on /mnt-16k type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme13n1 on /mnt-32k-16ks type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme11n1 on /mnt-64k-16ks type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=64k,noquota)
/dev/nvme18n1 on /mnt-32k type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme14n1 on /mnt-64k-32ks type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=64k,noquota)
/dev/nvme7n1 on /mnt-64k-512b type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme4n1 on /mnt-32k-512 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme3n1 on /mnt-16k-512b type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme9n1 on /mnt-64k-4ks type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=64k,noquota)
/dev/nvme8n1 on /mnt-32k-4ks type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme6n1 on /mnt-16k-4ks type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme5n1 on /mnt-4k type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
/dev/nvme1n1 on /mnt-512 type xfs (rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)

root@linus ~ # ps -ef| grep fsx
root       45601   45172 44 04:02 pts/3    00:20:26 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-16k/foo
root       46207   45658 39 04:04 pts/5    00:17:18 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-32k-16ks/foo
root       46792   46289 35 04:06 pts/7    00:14:36 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-64k-16ks/foo
root       47293   46899 39 04:08 pts/9    00:15:30 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-32k/foo
root       47921   47338 34 04:10 pts/11   00:12:56 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-64k-32ks/foo
root       48898   48484 32 04:14 pts/13   00:10:56 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-64k-512b/foo
root       49313   48939 35 04:15 pts/15   00:11:38 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-32k-512/foo
root       49729   49429 40 04:17 pts/17   00:12:27 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-16k-512b/foo
root       50085   49794 33 04:18 pts/19   00:09:56 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-64k-4ks/foo
root       50449   50130 36 04:19 pts/21   00:10:28 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-32k-4ks/foo
root       50844   50517 41 04:20 pts/23   00:11:22 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-16k-4ks/foo
root       51135   50893 52 04:21 pts/25   00:13:57 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-4k/foo
root       52061   51193 49 04:25 pts/27   00:11:21 /var/lib/xfstests/ltp/fsx -q -S 0 -p 1000000 /mnt-512/foo
root       57668   52131  0 04:48 pts/29   00:00:00 grep fsx


root@linuslbs ~ # grep XFS /boot/config-6.6.0-rc2-large-block-linus-nobdev+ 
CONFIG_XFS_FS=m
CONFIG_XFS_SUPPORT_V4=y
# CONFIG_XFS_SUPPORT_ASCII_CI is not set
CONFIG_XFS_QUOTA=y
CONFIG_XFS_POSIX_ACL=y
CONFIG_XFS_RT=y
CONFIG_XFS_DRAIN_INTENTS=y
CONFIG_XFS_ONLINE_SCRUB=y
CONFIG_XFS_ONLINE_SCRUB_STATS=y
CONFIG_XFS_ONLINE_REPAIR=y
CONFIG_XFS_DEBUG=y
CONFIG_XFS_ASSERT_FATAL=y
# CONFIG_VXFS_FS is not set

root@linuslbs ~ # grep DEBUG_VM /boot/config-6.6.0-rc2-large-block-linus-nobdev+ 
CONFIG_ARCH_HAS_DEBUG_VM_PGTABLE=y
CONFIG_DEBUG_VM_IRQSOFF=y
CONFIG_DEBUG_VM=y
# CONFIG_DEBUG_VM_MAPLE_TREE is not set
# CONFIG_DEBUG_VM_RB is not set
CONFIG_DEBUG_VM_PGFLAGS=y
# CONFIG_DEBUG_VM_PGTABLE is not set

And the status gets updated then:

https://docs.google.com/spreadsheets/d/e/2PACX-1vSA6z8C3u0WsiU2EtJNM7O_1n1-_4DYz66s53DbSuNTDDboi70EsR0hSmeogCCjqieBqALmRJ2AIKBW/pubhtml

We will run fstests for all profiles as well, but figured I'd at
least mention a quick test on the linus branch which also adds
the coex stuff.

  Luis