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Re: [dm-devel] problem with multipathd, not all paths added to adisk on boot



Hi,

Mike Anderson <andmike linux vnet ibm com> wrote: 
> Sebastian Reitenbach <sebastia l00-bugdead-prods de> wrote:
> > /dev/sdb in group vm-store, on 1:0:0:0 is not listed, however, lsscsi
> > has the disk in the list:
> > [1:0:0:0]    disk    IBM      1814      FAStT  0916  /dev/sdb
> > 
> > for the disk that is not added to the group, I see sth like this 
> > in /var/log/messages:
> > Nov  6 12:32:36 srv24 kernel: end_request: I/O error, dev sdb, sector 0
> > Nov  6 12:32:39 srv24 kernel: end_request: I/O error, dev sdb, sector 0
> > Nov  6 12:32:39 srv24 kernel: end_request: I/O error, dev sdb, sector 8
> > Nov  6 12:32:42 srv24 kernel: end_request: I/O error, dev sdb, sector 0
> > Nov  6 12:32:42 srv24 multipathd: sdb: add path (uevent)
> > Nov  6 12:32:42 srv24 multipathd: sdb: spurious uevent, path already in 
> > pathvec
> > Nov  6 12:32:42 srv24 multipathd: sdb: failed to get path uid
> > Nov  6 12:32:45 srv24 kernel: end_request: I/O error, dev sdb, sector 0
> > 
> 
> What does running "/sbin/scsi_id -g -u -s /block/sdb" return when you are
> in this failing mode?
/sbin/scsi_id -g -u -s /block/sdb
3600a0b800048b3fe00000431490e90ce


> 
> If scsi_id fails what does "sg_inq -v /dev/sdb" and
> "cat /sys/block/sdb/device/state" return?
It doesn't fail, but anyways:
sg_inq -v /dev/sdb
    inquiry cdb: 12 00 00 00 24 00
standard INQUIRY:
    inquiry cdb: 12 00 00 00 4a 00
  PQual=0  Device_type=0  RMB=0  version=0x05  [SPC-3]
  [AERC=0]  [TrmTsk=0]  NormACA=1  HiSUP=1  Resp_data_format=2
  SCCS=0  ACC=0  TGPS=0  3PC=0  Protect=0  BQue=0
  EncServ=1  MultiP=0  [MChngr=0]  [ACKREQQ=0]  Addr16=0
  [RelAdr=0]  WBus16=1  Sync=1  Linked=0  [TranDis=0]  CmdQue=1
  Clocking=0x0  QAS=0  IUS=0
    length=74 (0x4a)   Peripheral device type: disk
 Vendor identification: IBM
 Product identification: 1814      FAStT
 Product revision level: 0916
    inquiry cdb: 12 01 00 00 fc 00
    inquiry: requested 252 bytes but  got 21 bytes
    inquiry cdb: 12 01 80 00 fc 00
    inquiry: requested 252 bytes but  got 20 bytes
 Unit serial number: SG83955342

cat /sys/block/sdb/device/state
running

thanks
Sebastian


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