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grub2 os-prober hangs on checking extended partition
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Gh0str1d3r
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Joined: 27 May 2008
Posts: 315

PostPosted: Sun Sep 23, 2012 4:51 pm    Post subject: grub2 os-prober hangs on checking extended partition Reply with quote

Hi,

since very recently the command

Code:
grub2-mkconfig -o /boot/grub2/grub.cfg


hangs after a short moment. htop reveals that

Code:
mount -o ro -t reiserfs /dev/sda3 /var/lib/os-prober/mount cpu


is using 100% CPU and it cannot be killed. Here is the partition table of /dev/sda:

Quote:
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes, 1953525168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xf15f6859

Device Boot Start End Blocks Id System
/dev/sda1 * 63 109563299 54781618+ 7 HPFS/NTFS/exFAT
/dev/sda2 109563300 109643624 40162+ 83 Linux
/dev/sda3 1643753472 1953523711 154885120 5 Extended
/dev/sda4 109643776 1643753471 767054848 83 Linux
/dev/sda5 1643755520 1660532735 8388608 82 Linux swap / Solaris
/dev/sda6 1660534784 1953523711 146494464 7 HPFS/NTFS/exFAT


So /dev/sda3 is an extended partition and should not be checked. The only workaround I found is to explicitly forbid os-prober to check this partition (see link). I believe the problem exists since I have reiserfs support in my kernel. Does anyone know about this problem? Is it a bug of grub2 or a gentoo-specific problem?


Many thanks!
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dE_logics
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Joined: 02 Jan 2009
Posts: 2196
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PostPosted: Fri Mar 22, 2013 11:39 am    Post subject: Reply with quote

Yes, I know about this problem cause I've encountered it.
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