[haiku-bugs] Re: [Haiku] #9449: bfs: SegFault while unmounting at shutdown
- From: "ithamar" <trac@xxxxxxxxxxxx>
- Date: Mon, 30 Mar 2015 07:36:34 -0000
#9449: bfs: SegFault while unmounting at shutdown
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Reporter: jahaiku | Owner: axeld
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: File Systems/BFS | Version: R1/alpha4.1
Resolution: | Keywords:
Blocked By: | Blocking: 10443
Has a Patch: 0 | Platform: All
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Comment (by ithamar):
ok, in the case of my USB disk removal the notification of the USB stack
that the device was removed comes after BFS tries to update the journal.
Since the BlockWriter in the block cache panic's on failed writes (and
reads), the panic comes before the notification. I've simply tried making
the panics TRACE_ALWAYS() and I see a bunch of them in the syslog then,
just before the "Device Removed" notification comes by, and things seem to
be fine.
I've had a quick look at the installer code, but I don't see it ejecting
the boot volume or such, is this triggered from some other part of the
system? Somehow it seems the USB (boot) disk has disappeared by time the
block cache tries to write to it. In my removal case, there's no hope of
writing it ever, but in this installer case, I guess it should get the
chance.
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Ticket URL: <https://dev.haiku-os.org/ticket/9449#comment:13>
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