This is an IBM ServeRAID-BR10i. Identified at boot time as LSISAS1068E B3, FwRev=011b5600h I was using another controller (HighPoint RocketRAID 2720SGL) which gives me grief so decided to re-commission my old (slow) controller. It worked perfectly until retired 4 years ago. I want to use this old controller, to confirm that my recent problems are from my controller, and if so acquire a reliable one. The LSI controller POST messages indicated it seed all 7 disks, and they are also present in the linux messages, but the partitions are not there. I did not enter the controller's configuration dialogue. Each disk has one (unformatted, created with gparted) partition which is a member of a RAID6. The messages in the log are these: Sep 22 14:59:18 e7 kernel: mptsas: ioc0: attaching sata device: fw_channel 0, fw_id 20, phy 0, sas_addr 0x70944e23a5c4b492 Sep 22 14:59:18 e7 kernel: scsi 6:0:0:0: Direct-Access ATA WDC WD4003FZEX-0 1A01 PQ: 0 ANSI: 5 Sep 22 14:59:18 e7 kernel: sd 6:0:0:0: Attached scsi generic sg2 type 0 Sep 22 14:59:18 e7 kernel: sd 6:0:0:0: [sdc] 4294967294 512-byte logical blocks: (2.20 TB/2.00 TiB) Sep 22 14:59:18 e7 kernel: sd 6:0:0:0: [sdc] Write Protect is off Sep 22 14:59:18 e7 kernel: sd 6:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Unlike the usual messages: Sep 23 01:05:17 e7 kernel: ata7.00: ATA-8: WDC WD4001FAEX-00MJRA0, 01.01L01, max UDMA/133 Sep 23 01:05:17 e7 kernel: ata7.00: 7814037168 sectors, multi 0: LBA48 NCQ (depth 31/32) Sep 23 01:05:17 e7 kernel: ata7.00: configured for UDMA/133 Sep 23 01:05:17 e7 kernel: scsi 6:0:0:0: Direct-Access ATA WDC WD4001FAEX-0 1L01 PQ: 0 ANSI: 5 Sep 23 01:05:19 e7 kernel: sd 6:0:0:0: Attached scsi generic sg2 type 0 Sep 23 01:05:19 e7 kernel: sd 6:0:0:0: [sdc] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB) Sep 23 01:05:19 e7 kernel: sd 6:0:0:0: [sdc] Write Protect is off Sep 23 01:05:19 e7 kernel: sd 6:0:0:0: [sdc] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA Sep 23 01:05:19 e7 kernel: sdc: sdc1 Sep 23 01:05:19 e7 kernel: sd 6:0:0:0: [sdc] Attached SCSI disk In short, no ata?.00 devices and no 'sdc: sdc1' partition list. As an aside, I notice that the messages from parted are a bit different from what I have recorded. My records are from when I was running f19 (now on f26) so maybe the utilities changed. The old record (from f19): $ sudo parted /dev/sdj print Model: ATA WDC WD4001FAEX-0 (scsi) Disk /dev/sdj: 4001GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 4001GB 4001GB What I see now (from f26): $ sudo parted /dev/sdc print Model: ATA WDC WD4001FAEX-0 (scsi) Disk /dev/sdc: 4001GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 4001GB 4001GB msftdata The partition is now showing a flag 'msftdata'. Is this a utility change (fdisk is also slightly different) or did the LSI touch the partition table? TIA -- Eyal Lebedinsky (eyal@xxxxxxxxxxxxxx) -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html