Hello all,
i dug around a bit more last night and copied over a strace binary into
the running d-i installer system. Running the failing find-partitions
command mentioned in my earlier post again with strace showed, that find-
partitions isn't really failing on a disk device, but rather on /dev/sr0
(see [1]).
So i wrote a quick'n'dirty patch (see [2]) to find-partitions to skip
all /dev/sr* devices and with this the d-i can now successfully finish
the install.
I didn't dive to deep into the code, but i still wonder why find-partitions
would consider /dev/srN or CD/DVD devices in the first place?
In this setup the disk devices sda and sdb refer to the same backend LUN
that is mapped to the LPAR via two Virtual I/O Server. The d-i ISO image
is mapped to the LPAR via one Virtual I/O Server as a virtual optical
device (see [3] and [4] page 14). So from inside the now installed Debian
system the storage devices look like this (see [5] for more disk related
output):
[ 0.379011] scsi 0:0:1:0: Direct-Access AIX VDASD 0001
PQ: 0 ANSI: 3
[ 0.379271] scsi 0:0:2:0: CD-ROM AIX VOPTA
PQ: 0 ANSI: 4
[ 0.398197] scsi 1:0:1:0: Direct-Access AIX VDASD 0001
PQ: 0 ANSI: 3
...
[ 2.738953] sd 0:0:1:0: Attached scsi generic sg0 type 0
[ 2.739123] sr 0:0:2:0: Attached scsi generic sg1 type 5
[ 2.739267] sd 1:0:1:0: Attached scsi generic sg2 type 0
Is the original find-partitions command failing here because of the way
the ISO image is mapped to the LPAR?
Thanks & best regards,
Frank Fegert
# [1] Begin ###########################################################
...
open("/dev/mapper/vg00-swap", O_RDWR|O_LARGEFILE) = 3
mmap(NULL, 528384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xf7dda000
munmap(0xf7dda000, 528384) = 0
mmap(NULL, 528384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xf7dda000
munmap(0xf7dda000, 528384) = 0
mmap(NULL, 528384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xf7dda000
munmap(0xf7dda000, 528384) = 0
mmap(NULL, 528384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xf7dda000
munmap(0xf7dda000, 528384) = 0
mmap(NULL, 528384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xf7dda000
munmap(0xf7dda000, 528384) = 0
mmap(NULL, 528384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0xf7dda000
munmap(0xf7dda000, 528384) = 0
fsync(3) = 0
close(3) = 0
open("/dev/sr0", O_RDWR|O_LARGEFILE) = 3
fsync(3) = 0
close(3) = 0
open("/dev/sr0", O_RDWR|O_LARGEFILE) = 3
write(2, "Warning: ", 9Warning: ) = 9
write(2, "The driver descriptor says the p"..., 98The driver descriptor says
the physical block size is 512 bytes, but Linux says it is 2048 bytes.
) = 98
fsync(3) = 0
close(3) = 0
write(2, "A bug has been detected in GNU P"..., 299A bug has been detected in
GNU Parted. Refer to the web site of parted
http://www.gnu.org/software/parted/parted.html for more information of what
could be useful for bug submitting! Please email a bug report to) and the
following message: ) = 299st the version (2.3--More--
write(2, "Assertion (disk != NULL) at ../."..., 102Assertion (disk != NULL) at
../../libparted/disk.c:1548 in function ped_disk_next_partition() failed.
) = 102
rt_sigprocmask(SIG_UNBLOCK, [ABRT], NULL, 8) = 0
gettid() = 13874
tgkill(13874, 13874, SIGABRT) = 0
--- SIGABRT (Aborted) @ 0 (0) ---
+++ killed by SIGABRT +++
# [1] End #############################################################
# [2] Begin ###########################################################
diff -uwir partconf.orig//find-parts.c partconf/find-parts.c
--- partconf.orig//find-parts.c 2012-11-08 22:04:58.000000000 +0100
+++ partconf/find-parts.c 2013-02-12 23:09:00.000000000 +0100
@@ -182,6 +182,8 @@
continue;
if (strstr(dev->path, "/dev/mtd") == dev->path)
continue;
+ if (strstr(dev->path, "/dev/sr") == dev->path)
+ continue;
if (!ped_disk_probe(dev))
continue;
disk = ped_disk_new(dev);
# [2] End #############################################################
[3]
http://www.ibmsystemsmag.com/aix/tipstechniques/systemsmanagement/Using-File-Backed-Virtual-SCSI-Devices/?page=
[4]
http://www.ibm.com/developerworks/wikis/download/attachments/53871900/Configuring+and+Using+File-Backed+Virtual+SCSI+Devices.pdf?version=1
(Page 14)
# [5] Begin ###########################################################
[ 0.359797] ibmvscsi 30000002: SRP_VERSION: 16.a
[ 0.360323] scsi0 : IBM POWER Virtual SCSI Adapter 1.5.9
[ 0.360844] ibmvscsi 30000002: partner initialization complete
[ 0.360909] ibmvscsi 30000002: host srp version: 16.a, host partition
vios1-p770-343 (1), OS 3, max io 262144
[ 0.360984] ibmvscsi 30000002: Client reserve enabled
[ 0.360998] ibmvscsi 30000002: sent SRP login
[ 0.361139] ibmvscsi 30000002: SRP_LOGIN succeeded
[ 0.377419] ibmvscsi 30000003: SRP_VERSION: 16.a
[ 0.377657] scsi1 : IBM POWER Virtual SCSI Adapter 1.5.9
[ 0.377922] ibmvscsi 30000003: partner initialization complete
[ 0.377978] ibmvscsi 30000003: host srp version: 16.a, host partition
vios2-p770-343 (2), OS 3, max io 262144
[ 0.378055] ibmvscsi 30000003: Client reserve enabled
[ 0.378065] ibmvscsi 30000003: sent SRP login
[ 0.378161] ibmvscsi 30000003: SRP_LOGIN succeeded
[ 0.379011] scsi 0:0:1:0: Direct-Access AIX VDASD 0001
PQ: 0 ANSI: 3
[ 0.379271] scsi 0:0:2:0: CD-ROM AIX VOPTA
PQ: 0 ANSI: 4
[ 0.398197] scsi 1:0:1:0: Direct-Access AIX VDASD 0001
PQ: 0 ANSI: 3
[ 0.415684] sd 0:0:1:0: [sda] 75497472 512-byte logical blocks: (38.6
GB/36.0 GiB)
[ 0.415804] sd 0:0:1:0: [sda] Write Protect is off
[ 0.415887] sd 0:0:1:0: [sda] Cache data unavailable
[ 0.415898] sd 0:0:1:0: [sda] Assuming drive cache: write through
[ 0.416460] sd 0:0:1:0: [sda] Cache data unavailable
[ 0.416467] sd 0:0:1:0: [sda] Assuming drive cache: write through
[ 0.416793] sda: sda1 sda2 sda3
[ 0.417551] sd 0:0:1:0: [sda] Cache data unavailable
[ 0.417561] sd 0:0:1:0: [sda] Assuming drive cache: write through
[ 0.417566] sd 0:0:1:0: [sda] Attached SCSI disk
[ 0.435188] sd 1:0:1:0: [sdb] 75497472 512-byte logical blocks: (38.6
GB/36.0 GiB)
[ 0.435296] sd 1:0:1:0: [sdb] Write Protect is off
[ 0.435382] sd 1:0:1:0: [sdb] Cache data unavailable
[ 0.435391] sd 1:0:1:0: [sdb] Assuming drive cache: write through
[ 0.435909] sd 1:0:1:0: [sdb] Cache data unavailable
[ 0.435917] sd 1:0:1:0: [sdb] Assuming drive cache: write through
[ 0.436132] sdb: sdb1 sdb2 sdb3
[ 0.436872] sd 1:0:1:0: [sdb] Cache data unavailable
[ 0.436881] sd 1:0:1:0: [sdb] Assuming drive cache: write through
[ 0.436888] sd 1:0:1:0: [sdb] Attached SCSI disk
...
[ 2.705734] cdrom: Uniform CD-ROM driver Revision: 3.20
[ 2.738953] sd 0:0:1:0: Attached scsi generic sg0 type 0
[ 2.739123] sr 0:0:2:0: Attached scsi generic sg1 type 5
[ 2.739267] sd 1:0:1:0: Attached scsi generic sg2 type 0
# [5] End #############################################################
On Mon, Jan 14, 2013 at 09:16:42AM +0100, Frank Fegert wrote:
> Hello all,
>
> i'm having some trouble with the d-i (squeeze and wheezy [1], the lenny
> d-i used to work though) on IBM Power LPARs. On the yaboot installer
> step the d-i breaks with:
> [!!] Install yaboot on a hard disk
> No bootstrap partition found
> No hard disks were found which have an "Apple_Bootstrap" partition.
> You must create an 819200-byte partition with type "Apple_Bootstrap".
>
> We've (see Debian Bug #350372, last entries) tracked this down to the
> call of "/usr/lib/partconf/find-partitions --flag prep" which drops
> out with the error:
> ~ # /usr/lib/partconf/find-partitions --flag prep
> Warning: The driver descriptor says the physical block size is 512 bytes,
> but Linux says it is 2048 bytes.
>
> A bug has been detected in GNU Parted. Refer to the web site of
> parted http://www.gnu.org/software/parted/parted.html for more
> information of what could be useful for bug submitting! Please
> email a bug report to bug-parted@gnu.org containing at least the
> version (2.3) and the following message: Assertion (disk != NULL)
> at ../../libparted/disk.c:1548 in function ped_disk_next_partition()
> failed. Aborted
>
> The setup is SAN-based disk -> dual VIOS -> LPAR (sda and sdb are one
> path for each VIOS to the same physical disk). The partition table looks
> like this:
> ~ # parted /dev/sda unit s print free
> Model: AIX VDASD (scsi)
> Disk /dev/sda: 75497472s
> Sector size (logical/physical): 512B/512B
> Partition Table: msdos
> Number Start End Size Type File system Flags
> 63s 2047s 1985s Free Space
> 1 2048s 16383s 14336s primary boot, prep
> 2 16384s 3921919s 3905536s primary ext4
> 3 3921920s 75495423s 71573504s primary lvm
> 75495424s 75497471s 2048s Free Space
>
> Can someone please shed some light on as to why this is happening on
> Debian versions later then lenny? And/or can someone please assist me
> in further debugging and possibly resolving this issue?
>
> Thanks & best regards,
>
> Frank Fegert
>
>
> [1] "Debian GNU/Linux testing _Wheezy_ - Official Snapshot powerpc NETINST
> Binary-1 20130112-15:23"
