Date: Sun, 12 Nov 2017 20:59:57 -0800 From: Walter Parker <walterp@gmail.com> To: freebsd-stable@freebsd.org Subject: GPT partition gets erased on boot Message-ID: <CAMPTd_A88LEsKwOC6QG_dui1Kye=JMDDkYDRpa4HJkTSzqehkQ@mail.gmail.com>
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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? 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
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