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Vchan does not clean xenstore directory when no longer needed #1390

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marmarek opened this Issue Nov 7, 2015 · 0 comments

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  Release 3.1 updates
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marmarek commented Nov 7, 2015

Vchan uses xenstore to negotiate connection parameters (ring grant ref, event channel number). Those parameter are used only when opening the connection and just after that are removed. But per-VM directory is left there, which (especially in dom0) is never cleaned later.

This leads to hundreds empty xenstore directories like:

/local/domain/0/data/vchan/4 = ""
/local/domain/0/data/vchan/5 = ""
/local/domain/0/data/vchan/6 = ""
/local/domain/0/data/vchan/7 = ""
/local/domain/0/data/vchan/8 = ""
/local/domain/0/data/vchan/10 = ""
/local/domain/0/data/vchan/11 = ""
/local/domain/0/data/vchan/12 = ""
/local/domain/0/data/vchan/13 = ""

After extensive system usage it is no longer possible to even list it (E2BIG).

@marmarek marmarek added this to the Release 3.1 milestone Nov 7, 2015

@marmarek marmarek added bug C: core P: minor labels Nov 7, 2015

@marmarek marmarek modified the milestones: Release 3.1, Release 3.1 updates Feb 8, 2016

@marmarek marmarek self-assigned this Feb 25, 2017

@marmarek marmarek closed this in marmarek/qubes-core-vchan-xen@494817e Apr 8, 2017

This was referenced Apr 8, 2017

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