Date: Mon, 13 Nov 2017 10:31:32 +0000 From: Bob Bishop <rb@gid.co.uk> To: Walter Parker <walterp@gmail.com> Cc: freebsd-stable@freebsd.org Subject: Re: GPT partition gets erased on boot Message-ID: <4DBDE77E-3847-4966-BDBD-53CD8C6A7754@gid.co.uk> In-Reply-To: <CAMPTd_A88LEsKwOC6QG_dui1Kye=JMDDkYDRpa4HJkTSzqehkQ@mail.gmail.com> References: <CAMPTd_A88LEsKwOC6QG_dui1Kye=JMDDkYDRpa4HJkTSzqehkQ@mail.gmail.com>
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Hi, > On 13 Nov 2017, at 04:59, Walter Parker <walterp@gmail.com> wrote: > > Hi, > > I'm setting up an old Sunfire X4140 system with 4 SAS drives plugged into > the SUN STK controller. Each drive is configured as a separate device. > > I ran the FreeBSD 11.1 installer and picked guided ZFS install where I > selected RAID10 (2 2way mirrors) using aacd0, aacd1, aacd2, and aacd3. It > installed the system and rebooted. > > When the new system came up, zpool status complained that aacd0p3 was > unavailable. Looking at /dev, I noticed that the only dev file was aacd0 > (aacd0p* were all missing). Using gpart on aacd0 it said there was no geom. > I was able to run gpart create to recreate the drive geom and then gpart > add to readd all of the partitions. After recreating aacd0p3, I was even > able to run zpool replace -f zroot /dev/aacd0p3 and the pool resilvered and > stopped complaining. > > On the next boot, aacd0 was missing all of its partitions. > > What would cause the partitions on a ZFS drive to disappear? At a guess, the controller is writing its metadata to the disk and trampling on the gpart data. > Thank you, > > > Walter > > -- > The greatest dangers to liberty lurk in insidious encroachment by men of > zeal, well-meaning but without understanding. -- Justice Louis D. Brandeis > _______________________________________________ > freebsd-stable@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" > -- Bob Bishop rb@gid.co.uk
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