아래 dmesg 로그로 설명을 드리겠습니다.

===================================================================
SCSI: Request Timeout -- lbolt: 711970715, dev: 1f010000
                lbp->state: 4060
                lbp->offset: ffffffff
                lbp->uPhysScript: c0100000
        From most recent interrupt:
                ISTAT: 22, SIST0: 00, SIST1: 04, DSTAT: 00, DSPS: c0100540
        lsp: 00000000557f5300
                bp->b_dev: 1f010000
                scb->io_id: 1446823
                scb->cdb: 2a 00 00 00 2c 10 00 00 10 00
                lbolt_at_timeout: 711967588, lbolt_at_start: 711967588
                lsp->state: 10d
        lbp->owner: 00000000557f5300
        scratch_lsp: 0000000000000000
        Pre-DSP script dump [fffffff400100020]:
                00000000 00000000 41000000 c0100290
                78347800 0000000a 78350800 00000000
        Script dump [fffffff400100040]:
                0e000004 c0100540 e0100004 c01007e0
                870b0000 c01002d8 0a000000 c0100548
SCSI: Abort abandoned -- lbolt: 711970716, dev: 1f010000, io_id: 1446823, status: 200
SCSI: Read error -- dev: b 31 0x010000, errno: 126, resid: 2048,
        blkno: 8, sectno: 16, offset: 8192, bcount: 2048.
LVM: vg[2]: pvnum=0 (dev_t=0x1f010000) is POWERFAILED
SCSI: Write error -- dev: b 31 0x010000, errno: 126, resid: 18432,
        blkno: 678, sectno: 1356, offset: 694272, bcount: 18432.
===================================================================

dev: 1f010000 은 아래와 같이 해석하시면 됩니다.
  
1f : device driver block major number
01 : instance number
0  : target address
0  : device number
00 : 사용하지 않는 부분
  
1f : device driver block major number : 0x1f = 31
  
# lsdev -b 31
    Character     Block       Driver          Class
      188          31         sdisk           disk
  
==> disk 라는 것을 알 수 있습니다.
  
그리고, 01 0 0 으로 아래 disk 임을 알 수 있습니다.
  
/dev/dsk/c1t0d0
  
LVM: vg[2]: pvnum=0 (dev_t=0x1f010000) is POWERFAILED
  
위 메시지에서는 문제가 생긴 디스크가 vg02 에 속해 있다는 것을 알 수 있습니다.