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Add media change support v2 #435

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Patches to add media change support based on @bgly's PR

#411

@bgly
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bgly commented Aug 8, 2018

Any ETA on this @mikechristie

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Ah sorry. I didn't see you update the targetcli patch. I will test it all again today.

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bgly commented Aug 9, 2018

sounds good, thanks mike!

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Just a FYI, I am still working on this. It will get done this week.

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Did you ever send the kernel patch to update the uio name when writing to the dev_control control file? If not, I attached a patch here:

tcmu-update-dev-cfg-via-control.txt

Mike Christie added 8 commits August 19, 2018 17:00
It doesn't look like the dbus handler registration is used
anymore. We are not using the check_config callout anymore
and the registration code did not seem to fully register a
handler for cmd processing, so drop it.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Make tcmu_set_control a macro so it can be reused in the next patch
for setting a string.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Move the UA code so it can be called from other files.

Signed-off-by: Mike Christie <mchristi@redhat.com>
This will be used in the next patches so targetcli
can pass in the tcmu name to dbus commands.

Signed-off-by: Mike Christie <mchristi@redhat.com>
This will be used in the next patch to set dev_config

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Mike Christie <mchristi@redhat.com>
This patch series will add media change that is
triggered via targetcli without involving the kernel

Based on patches my Bryant G. Ly.

Signed-off-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com>
Signed-off-by: Mike Christie <mchristi@redhat.com>
In debug mode log failed commands.

Signed-off-by: Mike Christie <mchristi@redhat.com>
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Repushed branch. It should work with the targecli patch attached to your PR and to the kernel patch above.

It is pretty much the same as before, but with the media -> medium rename, some error handler fixes so nicer strings are returned on failure, and I added a check so only handlers that report they support the op get called.

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bgly commented Aug 27, 2018

Looks good to me @mikechristie

reason = "Handler does not support medium changes.";
goto exit;
}

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Shoot. Giving myself a review comment.

We need to add lock or refcounting around parts of this to prevent the race where this is running along side a device removal.

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bump?

@lxbsz lxbsz changed the base branch from master to main August 10, 2022 00:24
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3 participants