Messages in this thread Patch in this message | | | Date | Tue, 03 Jun 2003 16:47:40 +0100 | From | Nick Burrett <> | Subject | 2.4.20 /proc/partitions corruption with many partitions |
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Hi,
I'm finding it difficult to create more than, say 80, logical partitions on a server. The symptoms are that lvcreate keeps segfaulting. The reason is that /proc/partitions contains invalid data.
I initially wondered whether it might be the device naming convention since when we go above 26 logical paritions we start writing out lvm{, lvm}, lvm[ etc. so I added the following patch to write out the devices as digits but this didn't have any effect.
--- fs/partitions/check.c 2002-11-28 23:53:15.000000000 +0000 +++ fs/partitions/check.c 2003-06-03 14:43:19.000000000 +0100 @@ -148,6 +148,7 @@ char *disk_name (struct gendisk *hd, int maj = "hd"; break; case MD_MAJOR: + case LVM_BLK_MAJOR: sprintf(buf, "%s%d", maj, unit); return buf; }
This is quite easy to replicate, just create many logical volumes until lvcreate fails e.g.
$ lvcreate -L 10M -n foo01 vol01 etc.
The attached file is simply the output of:
$ cat /proc/partitions >/root/foo.txt
Any thoughts ?
Regards,
Nick.
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