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Red Hat Bugzilla – Attachment 1976469 Details for
Bug 2223895
ReaR fails to create the rescue environment when a device is shrinking while being read
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systemtap script shrinking file "shrinking" when being read
shrinking.stp (text/plain), 669 bytes, created by
Renaud Métrich
on 2023-07-19 08:30:51 UTC
(
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Description:
systemtap script shrinking file "shrinking" when being read
Filename:
MIME Type:
Creator:
Renaud Métrich
Created:
2023-07-19 08:30:51 UTC
Size:
669 bytes
patch
obsolete
>global openat >global to_catch >global shrinking_fd >global nread > >probe syscall.openat { > if (execname() != "tar") next > if (filename_unquoted != "shrinking") next > to_catch[tid()] = 1 > openat[tid()] = 1 >} > >probe syscall.openat.return { > if (! openat[tid()]) next > delete openat[tid()] > shrinking_fd = retval > nread = 0 > printf("FD is %ld\n", retval) >} > >probe syscall.close { > if (! to_catch[tid()]) next > if (fd != shrinking_fd) next > delete to_catch[tid()] >} > >probe syscall.read { > if (! to_catch[tid()]) next > if (fd != shrinking_fd) next > nread++ > if (nread < 3) next > printf("Truncating the file\n") > system("truncate -s 25K /dev/shrinking") > mdelay(2000) > exit() >}
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bug 2223895
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