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--></style></head><body lang=EN-US link=blue vlink="#954F72"><div class=WordSection1><p class=MsoNormal>Gentle reminder… I would sincerely appreciate clarification on the below.</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards</p><p class=MsoNormal>LN</p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10</p><p class=MsoNormal><o:p> </o:p></p><div style='mso-element:para-border-div;border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal style='border:none;padding:0in'><b>From: </b><a href="mailto:lns@portworx.com">Lakshmi Narasimhan Sundararajan</a><br><b>Sent: </b>Friday, August 9, 2019 12:22 PM<br><b>To: </b><a href="mailto:lvm-devel@redhat.com">lvm-devel@redhat.com</a><br><b>Subject: </b>Reg concurrent access through lvmapp api</p></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi Team,<o:p></o:p></p><p class=MsoNormal>Is concurrent access to operations on lvm through lvm2app api possible?<o:p></o:p></p><p class=MsoNormal>I expected lvm2app api call to be self aware of multiple operations and lock access internal, but I see some crash while doing device creation/deletion and query in parallel.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So my question is, are basic crud (create/read/update and delete) operations on a vg safe to be operated concurrently through the lvm2app api calls? <o:p></o:p></p><p class=MsoNormal>If not, what kind of restrictions does the end app needs to know while using lvm2app api calls?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I also understand that the cli uses a /run/lvm/lvm.lock file to control concurrent access. So does it imply that applications have to enforce serialization? If yes, what are the cases for which this needs to be enforced.<o:p></o:p></p><p class=MsoNormal><br>Seeking some clarity on the same.<o:p></o:p></p><p class=MsoNormal><br>Regards<o:p></o:p></p><p class=MsoNormal>LN<o:p></o:p></p><p class=MsoNormal>Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986">Mail</a> for Windows 10<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>