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Date: Mon, 11 Oct 2021 17:42:35 +0800 From: Li Feng <fengli@...rtx.com> To: Xiao Ni <xni@...hat.com> Cc: Song Liu <song@...nel.org>, "open list:SOFTWARE RAID (Multiple Disks) SUPPORT" <linux-raid@...r.kernel.org>, open list <linux-kernel@...r.kernel.org> Subject: Re: [PATCH RESEND] md: allow to set the fail_fast on RAID1/RAID10 Xiao Ni <xni@...hat.com> 于2021年10月11日周一 下午3:49写道: > > Hi all > > Now the per device sysfs interface file state can change failfast. Do > we need a new file for failfast? > > I did a test. The steps are: > > mdadm -CR /dev/md0 -l1 -n2 /dev/sdb /dev/sdc --assume-clean > cd /sys/block/md0/md/dev-sdb > echo failfast > state > cat state > in_sync,failfast This works, will it be persisted to disk? > > Best Regards > Xiao > > On Sat, Oct 9, 2021 at 7:36 AM Song Liu <song@...nel.org> wrote: > > > > On Thu, Oct 7, 2021 at 8:22 PM Li Feng <fengli@...rtx.com> wrote: > > > > > > When the running RAID1/RAID10 need to be set with the fail_fast flag, > > > we have to remove each device from RAID and re-add it again with the > > > --fail_fast flag. > > > > > > Export the fail_fast flag to the userspace to support the read and > > > write. > > > > > > Signed-off-by: Li Feng <fengli@...rtx.com> > > > > Thanks for the patch! I applied it to md-next, with some changes in the > > commit log. > > > > Thanks, > > Song > > >
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