Date: Thu, 09 Jan 2014 13:15:52 +0100 From: Julian Stecklina <jsteckli@os.inf.tu-dresden.de> To: freebsd-stable@freebsd.org Subject: Re: UFS panic on Google Compute Engine Message-ID: <52CE92F8.9040801@os.inf.tu-dresden.de> In-Reply-To: <1389235686.3057.4.camel@janus.xn--pl-wia.net> References: <lajo13$2g6$1@ger.gmane.org> <CAB7-odkZAGxgtfnqNwNaCfqXcY0nmbFPdf3NtFYkwGUictJcyw@mail.gmail.com> <20140108193938.GA19267@neutralgood.org> <1389235686.3057.4.camel@janus.xn--pl-wia.net>
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On 01/09/2014 03:48 AM, Julian Stecklina wrote: > I checked the local copy of the image I uploaded to GCE and its > filesystem is fine. Must be happened during transfer to GCE. Weird. Okay, I've hit this now the third time. Massive file system corruption. fsck reports lots of UNALLOCATED I=6350 OWNER=root MODE=0 SIZE=0 MTIME=Jan 1 00:00 1970 NAME=/usr/ports/x11-themes/metacity-theme-microgui UNEXPECTED SOFT UPDATE INCONSISTENCY and LINK COUNT DIR I=1175282 OWNER=root MODE=40755 SIZE=512 MTIME=Jan 9 03:28 2014 COUNT 3 SHOULD BE 2 ADJUST? yes LINK COUNT DIR I=1175287 OWNER=root MODE=40755 SIZE=512 MTIME=Jan 9 03:28 2014 COUNT 3 SHOULD BE 2 ADJUST? yes It seems rather easy to reproduce. Upload a disk image to GCE and extract ports. I did it via portsnap fetch extract. I am not sure what could go so horribly wrong. In two of three cases the filesystem was beyond repair. As for problem causes: Has the virtio scsi driver changed significantly between FreeBSD 9 and 10? Also weird is that the same virtual disk pops up two times: da0 at vtscsi0 bus 0 scbus0 target 1 lun 0 da0: <Google PersistentDisk 1> Fixed Direct Access SCSI-6 device da0: 300.000MB/s transfers da0: 10240MB (20971520 512 byte sectors: 255H 63S/T 1305C) da1 at vtscsi0 bus 0 scbus0 target 1 lun 1 da1: <Google PersistentDisk 1> Fixed Direct Access SCSI-6 device da1: 300.000MB/s transfers da1: 10240MB (20971520 512 byte sectors: 255H 63S/T 1305C) Julian
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