Re: Poor write performance with write-intent bitmap?

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John Robinson <john.robinson@xxxxxxxxxxxxxxxx> writes:

> Can't do that, my root filesystem is on the RAID-5, and part of the
> reason for wanting the bitmap is because the md can't be stopped while
> shutting down, so it was always wanting to resync at startup, which is
> rather tedious.

Normal shutdown should put the raid in read-only mode as last step. At
least Debian does that. That way even a mounted raid will be clean
after reboot.

I would also suggest restructuring your system like this:

sdX1 1GB  raid1  / (+/boot)
sdX2 rest raid5  lvm with /usr, /var, /home, ...

Both / and /usr can usualy be read-only preventing any filesystem
corruption and raid resyncs in that part of the raid.

MfG
        Goswin
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