Date: Wed, 08 Apr 2026 09:31:18 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 294326] glabel.8: Document conditions where (automatic) labeled devices aren't created Message-ID: <bug-294326-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=294326 Bug ID: 294326 Summary: glabel.8: Document conditions where (automatic) labeled devices aren't created Product: Base System Version: 16.0-CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: michaelo@FreeBSD.org I wanted to make use of automatical disk labels /dev/diskid/ for ZFS and failed. Consider the follwing configuration: root@deblndw013x:~ # camcontrol inquiry da0 pass0: <HP RAID 1(1+0) OK> Fixed Direct Access SPC-3 SCSI device pass0: Serial Number 50014380147AB8F0 pass0: 135.168MB/s transfers, Command Queueing Enabled root@deblndw013x:~ # camcontrol inquiry da1 pass1: <HP RAID 5 OK> Fixed Direct Access SPC-3 SCSI device pass1: Serial Number 50014380147AB8F0 pass1: 135.168MB/s transfers, Command Queueing Enabled root@deblndw013x:~ # camcontrol inquiry da2 pass2: <HP RAID 1(1+0) OK> Fixed Direct Access SPC-3 SCSI device pass2: Serial Number 50014380147AB8F0 pass2: 135.168MB/s transfers, Command Queueing Enabled Note: Please don't ask why it is RAID, the controller firmware does not support HBA mode. As you can see the S/N is identical for all three VDs (see also https://www.claudiokuenzler.com/blog/413/freebsd-cciss-hp-smart-array-raid-wrong-disk-numbering-labeling). Whether this is a firmware bug in the controller or in ciss(4) I don't know, but this can happens with GPT labels and other automatic labels. I ended up with only one labeled device. dmesg didn't show a WARNING/ERROR nothing. Looking into sys/geom/label/g_label.c I see g_label_create() three conditions: * Label invalid. Not documented what characters are permissive. * Label too long. 64 chars including prefix and null byte. * Label already exists, first wins. My case. I believe that they should be part of the manpage especially for the automatically created labeled devices. -- You are receiving this mail because: You are the assignee for the bug.home | help
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