From: Dietmar Maurer <dietmar@proxmox.com>
To: Proxmox Backup Server development discussion
<pbs-devel@lists.proxmox.com>,
Wolfgang Bumiller <w.bumiller@proxmox.com>,
Stefan Sterz <s.sterz@proxmox.com>
Subject: Re: [pbs-devel] [RFC PATCH 0/5] fix #3935: refactor datastore locking to use tmpfs
Date: Tue, 22 Mar 2022 10:46:20 +0100 (CET) [thread overview]
Message-ID: <652219984.1036.1647942380429@webmail.proxmox.com> (raw)
> - A "hashmap lock file": An in-memory file filled with robust-futex
> where the group name simply gets hashed to get to a positioin in the
> file. Hash clashes aren't an issue since all they'd do is cause
> multiple groups to be guarded by the same lock, which wouldn't
> technically be wrong.
Just want to note that above approach could lead to unexpected deadlocks with hash clashes, so I guess it is not that simple to get it right...
next reply other threads:[~2022-03-22 9:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-22 9:46 Dietmar Maurer [this message]
2022-03-22 9:57 ` Wolfgang Bumiller
-- strict thread matches above, loose matches on Subject: below --
2022-03-18 14:06 Stefan Sterz
2022-03-22 9:38 ` Wolfgang Bumiller
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