[4.8] libct/cg/sd: reconnect and retry on dbus connection error #50
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[@kolyshkin: documentation nits] Signed-off-by: Shiming Zhang <wzshiming@foxmail.com> Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> (cherry picked from commit cdbed6f) [minor merge conflict due to missing upstream commit 73f22e7] Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Generalize isUnitExists as isDbusError, and use errors.As while at it (which can handle wrapped errors as well). Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> (cherry picked from commit bacfc2c) Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
[@kolyshkin: doc nits, use dbus.ErrClosed and isDbusError] Signed-off-by: Shiming Zhang <wzshiming@foxmail.com> Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> (cherry picked from commit 15fee98) Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Signed-off-by: Shiming Zhang <wzshiming@foxmail.com> Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> (cherry picked from commit 6122bc8) Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Instead of reconnecting to dbus after some failed operations, and returning an error (so a caller has to retry), reconnect AND retry in place for all such operations. This should fix issues caused by a stale dbus connection after e.g. a dbus daemon restart. Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> (cherry picked from commit 47ef9a1) [Minor merge conflicts due to missing upstream commits 52390d6 and af521ed.] Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
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wrong repo 🤦🏻 |
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This is a backport of upstream PR opencontainers/runc#2923.
It is mostly straightforward, only a few minor merge conflicts due to missing upstream commits:
Original description follows.
In case the dbus daemon is ever restarted, the connection is no longer valid and every operation
fails. This is a minor concern for short-lived runc, but much more of a issue in case there is
a long-running daemon (e.g.
cri-o) is using runc's libcontainer, as the connection is neverretried and the only remedy is to restart the daemon.
The solution to the above is to check the errors returned for
dbus: connection closed by usererror, and try to re-connect on that. This is what PR #2862 does.
This is a carry of #2862, implementing the idea of retry-in-place (first described
at opencontainers/runc#2862 (comment) and opencontainers/runc#2862 (comment)) on top of what it does.
For more info, see commit messages as well as #2862.
Fixes: