Date: Mon, 18 Jul 2022 11:18:31 +0930 From: "Daniel O'Connor" <darius@dons.net.au> To: Felix Palmen <felix@palmen-it.de> Cc: freebsd-hackers@freebsd.org Subject: Re: VFS mount rollback for virtio 9pfs Message-ID: <45451C7B-7A12-420F-B6B0-19F2FA98D056@dons.net.au> In-Reply-To: <20220715151509.d2v6kqkjsnrxtprj@nexus.home.palmen-it.de> References: <75ACE8B8-A41F-4742-95DA-3CFB3B97746A@dons.net.au> <20220714101214.sju2rpsngqjyuvsb@nexus.home.palmen-it.de> <BC734F39-4ECC-4B0D-A771-83763F3283BC@dons.net.au> <20220715131656.f2epy732npgbgrf5@nexus.home.palmen-it.de> <20220715151509.d2v6kqkjsnrxtprj@nexus.home.palmen-it.de>
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> On 16 Jul 2022, at 00:45, Felix Palmen <felix@palmen-it.de> wrote: > * Felix Palmen <felix@palmen-it.de> [20220715 15:16]: >> I tested it, successful so far as it seems! Thanks again! > > Unfortunately, it doesn't work reliably yet. Trying a testport with > poudriere logs mounted via virtfs, I got errors like these: > > #v+ > /usr/bin/awk: can't open file 14a-default/2022-07-15_16h43m01s/.poudriere.jailname > input record number 1, file 14a-default/2022-07-15_16h43m01s/.poudriere.jailname > > rename: /usr/local/poudriere/data/logs/bulk/14a-default/2022-07-15_16h43m01s/.tmp-.poudriere.snap_loadavg.OV0Gxx2m to /usr/local/poudriere/data/logs/bulk/14a-default/2022-07-15_16h43m01s/.poudriere.snap_loadavg: Invalid argument > > _mktemp: mkstemp failed on 14a-default/2022-07-15_16h43m01s/.tmp-.data.json.stpmwmGg: Invalid argument > > mapfile_write: Missing handle > #v- > > after that, the mount is somehow broken: > > # ls -l /usr/local/poudriere/data/logs/ > ls: bulk: Invalid argument Hmm fun! :) I did copy the tmpfs tests but they are mostly basic functional tests rather that exercising race conditions and the like. > So, probably it's back to NFS *for now*. > > Still the best attempt I've seen so far, all others I tried crashed the > kernel on mount ;) Thanks for testing it, I will try some more intensive tests. Which hypervisor are you using BTW? -- Daniel O'Connor "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum
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