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Dump some information about used devices to syslog so that an admin
can troubleshoot failing blocklayout mounts.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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We do want to use the dm-multipath device if it exists, which the
code is generally prepared for, except that this check excludes them
early. In addition this will also add the passive path to the device
list, which is harmless if an active one exists as that or the multipath
device will be preferred, and at least allows us to work if it doesn't.
Also fix up the check if an path needs to be updated to remove the silly
partition check - pNFS block offset are relative to the device so partion
should never match it instead of the full device. On the other hand the
simplistic check easily creates false positives, e.g. dm-10 is
considered a partition of dm-1.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Steve Dickson <steved@redhat.com>
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Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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User may load/unload blocklayoutdriver module dynanmically.
So we handle it by watching the pipe file creation/deletion.
Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This really only works against EMC servers. There is at least one server
that returns unprintable signatures, which fill the log with garbage (the
spec does not mandate printable signatures). It could be made more generic,
for example by checking each byte for isprint(). But the signatures are
really only of interest to developers, not admins, so it seems better to
just remove it.
Signed-off-by: Jim Rees <rees@umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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PAGE_SIZE is not exported by all architectures as it is not fixed: it
can depend on the model of the machine. So it's better to query the
system configuration for the actual page size on the machine.
Signed-off-by: Luk Claes <luk@debian.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
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This daemon is required to handle upcalls from the kernel pnfs block
layout driver.
Signed-off-by: Jim Rees <rees@umich.edu>
Signed-off-by: Steve Dickson <steved@redhat.com>
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