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hard drive spindown [scsi, fibre channel, sata]... anything or kernel hack / patch av
Hi
I have a large disk array [14 disks] I use at home in my server for virtual machines. I'd like to find a way to spin down idle scsi disks, and most of the time the virtual machine is running [say linux + asterisk], and that disk is sitting there chewing up power. Instead of replacing it with a single hard drive I prefer to keep the individual disks for performance reasons. Is there any hard drive power management in Linux? I did find some posts from about 2002 era with scsi-idle, but nothing much since then. I've looked through the kernel options without luck also. If anyone knows what OS will do this [besides windows] can you also let me know, as I might have to look at moving in that direction. Thanks Jonathan |
You may want to look into the 'hdparm' and 'sdparm' utilities. The former is a tool for sending and receiving commands and information to/from IDE/ATA drives (hard disks basically) and the latter is the same, but for SCSI drives (including CDROM-type drives).
'sdparm' allows for stop & start commands, to spindown/up the drives. Cheers, Sasha PS - you can install these tools on ANY Linux you choose to use. They may even be included with some of them. |
http://www.j-pfennig.de/LinuxImHaus/ngflushd_1_man.html
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if that is an external array, you may be at the mercy of the way the enclosure and array controller was designed. You didn't describe your hardware, so it's difficult to tell how things are actually setup. if Linux is just seeing the array as a single large volume via a SCSI interface, I doubt there is any way to control individual disk spin down from within Linux. |
Hey
Thanks for the replies! I'm going to investigate the sdparm utility. Basically I have two arrays 7 x 500 gb disks for storage and 14x 74 gb disks for virtual machine OS drives. The array I'm referring to is actually fibre channel, running on a QLA2312. The array is a LSI SYM2600-FC, and all of the hard drives are ST373307FC. I've used the array in windows previously where I first noticed everytime I access the spanned volume after some time they would all spin up, but I really really don't want to start up another machine just to run this thing, espically a windows one! I typically have the disks mounted in pairs (mirrored) or a small raid 5 array of three disks, so if its possible to shut down say the 2 disks of /dev/md7 and /dev/md8 for example that'd be fantastic, that would be 4 or 6 disks off until the vm was started or needed ! Edit: see below Let me know if you have any more ideas! Thanks, Jonathan Edit: Here is the output of sdparm, actually can see some mention of power condition mode. DL580 ~ # sdparm --all /dev/sdu /dev/sdu: SEAGATE ST373405FC MS09 Read write error recovery mode page: AWRE 1 [cha: y, def: 1, sav: 1] ARRE 1 [cha: y, def: 1, sav: 1] TB 0 [cha: y, def: 0, sav: 0] RC 0 [cha: y, def: 0, sav: 0] EER 0 [cha: y, def: 0, sav: 0] PER 1 [cha: y, def: 0, sav: 1] DTE 0 [cha: y, def: 0, sav: 0] DCR 0 [cha: y, def: 0, sav: 0] RRC 11 [cha: y, def: 11, sav: 11] COR_S 240 [cha: n, def:240, sav:240] HOC 0 [cha: n, def: 0, sav: 0] DSOC 0 [cha: n, def: 0, sav: 0] WRC 5 [cha: y, def: 5, sav: 5] RTL -1 [cha: y, def: -1, sav: -1] Disconnect-reconnect (SPC + transports) mode page: BFR 128 [cha: y, def:128, sav:128] BER 128 [cha: y, def:128, sav:128] BIL 0 [cha: n, def: 0, sav: 0] DTL 0 [cha: n, def: 0, sav: 0] CTL 0 [cha: n, def: 0, sav: 0] MBS 369 [cha: y, def:369, sav:369] EMDP 0 [cha: n, def: 0, sav: 0] FA 0 [cha: n, def: 0, sav: 0] DIMM 0 [cha: n, def: 0, sav: 0] DTDC 0 [cha: n, def: 0, sav: 0] FBS 0 [cha: n, def: 0, sav: 0] Format (SBC) mode page: TPZ 15344 [cha: n, def:15344, sav:15344] ASPZ 0 [cha: n, def: 0, sav: 0] ATPZ 23 [cha: n, def: 23, sav: 23] ATPLU 0 [cha: n, def: 0, sav: 0] SPT 607 [cha: n, def:607, sav:607] DBPPS 512 [cha: n, def:512, sav:512] INTLV 1 [cha: n, def: 1, sav: 1] TSF 96 [cha: n, def: 96, sav: 96] CSF 90 [cha: n, def: 90, sav: 90] SSEC 0 [cha: n, def: 0, sav: 0] HSEC 1 [cha: n, def: 1, sav: 1] RMB 0 [cha: n, def: 0, sav: 0] SURF 0 [cha: n, def: 0, sav: 0] Rigid disk (SBC) mode page: NOC 29550 [cha: n, def:29550, sav:29550] NOH 8 [cha: n, def: 8, sav: 8] SCWP 0 [cha: n, def: 0, sav: 0] SCRWC 0 [cha: n, def: 0, sav: 0] DSR 0 [cha: n, def: 0, sav: 0] LZC 0 [cha: n, def: 0, sav: 0] RPL 0 [cha: n, def: 0, sav: 0] ROTO 0 [cha: n, def: 0, sav: 0] MRR 10040 [cha: n, def:10040, sav:10040] Verify error recovery (SBC) mode page: V_EER 0 [cha: y, def: 0, sav: 0] V_PER 1 [cha: y, def: 0, sav: 1] V_DTE 0 [cha: y, def: 0, sav: 0] V_DCR 0 [cha: y, def: 0, sav: 0] V_RC 11 [cha: y, def: 11, sav: 11] V_COR_S 240 [cha: n, def:240, sav:240] V_RTL -1 [cha: y, def: -1, sav: -1] Caching (SBC) mode page: IC 0 [cha: y, def: 0, sav: 0] ABPF 0 [cha: n, def: 0, sav: 0] CAP 0 [cha: y, def: 0, sav: 0] DISC 1 [cha: y, def: 1, sav: 1] SIZE 0 [cha: n, def: 0, sav: 0] WCE 0 [cha: y, def: 1, sav: 0] MF 0 [cha: n, def: 0, sav: 0] RCD 0 [cha: y, def: 0, sav: 0] DRRP 0 [cha: n, def: 0, sav: 0] WRP 0 [cha: n, def: 0, sav: 0] DPTL -1 [cha: n, def: -1, sav: -1] MIPF 0 [cha: y, def: 0, sav: 0] MAPF -1 [cha: y, def: -1, sav: -1] MAPFC -1 [cha: n, def: -1, sav: -1] FSW 1 [cha: y, def: 1, sav: 1] LBCSS 0 [cha: n, def: 0, sav: 0] DRA 0 [cha: y, def: 0, sav: 0] NV_DIS 0 [cha: n, def: 0, sav: 0] NCS 16 [cha: y, def: 16, sav: 16] CSS 0 [cha: n, def: 0, sav: 0] Control mode page: TST 0 [cha: n, def: 0, sav: 0] TMF_ONLY 0 [cha: n, def: 0, sav: 0] D_SENSE 0 [cha: n, def: 0, sav: 0] GLTSD 0 [cha: y, def: 1, sav: 0] RLEC 1 [cha: y, def: 0, sav: 1] QAM 0 [cha: y, def: 0, sav: 0] QERR 0 [cha: n, def: 0, sav: 0] RAC 0 [cha: n, def: 0, sav: 0] UA_INTLCK 0 [cha: n, def: 0, sav: 0] SWP 0 [cha: y, def: 0, sav: 0] ATO 0 [cha: n, def: 0, sav: 0] TAS 0 [cha: n, def: 0, sav: 0] AUTOLOAD 0 [cha: n, def: 0, sav: 0] BTP 0 [cha: n, def: 0, sav: 0] ESTCT 0 [cha: y, def: 0, sav: 0] Protocol specific port mode page: PPID 0 [cha: n, def: 0, sav: 0] ****************************************************************** Power condition mode page: IDLE 0 [cha: y, def: 1, sav: 0] STANDBY 0 [cha: y, def: 1, sav: 0] ICT 1 [cha: n, def: 1, sav: 1] SCT 4 [cha: n, def: 4, sav: 4] ****************************************************************** Informational exceptions control mode page: PERF 0 [cha: y, def: 0, sav: 0] EBF 0 [cha: n, def: 0, sav: 0] EWASC 0 [cha: y, def: 1, sav: 0] DEXCPT 0 [cha: y, def: 0, sav: 0] TEST 0 [cha: y, def: 0, sav: 0] EBACKERR 0 [cha: n, def: 0, sav: 0] LOGERR 0 [cha: y, def: 0, sav: 0] MRIE 3 [cha: y, def: 0, sav: 3] INTT 0 [cha: y, def: 0, sav: 0] REPC 1 [cha: y, def: 1, sav: 1] DL580 ~ # |
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Power condition [po] [0x1a] mode page [PS=0]:Plus, another tool/package similar to this, called 'sg3_tools' or 'sg3_utilities' (I'll check the exact name if you want it and can't find it) does a lot of what sdparm does, only a *whole lot* more too; it is that much more complicated too, with longer. more confusing commands. Just incase sdparm doesn't do what you want. Good luck, Sasha |
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Here's some more output ~ # sdparm -p po -l /dev/sdu /dev/sdu: SEAGATE ST373405FC MS09 Direct access device specific parameters: WP=0 DPOFUA=1 Power condition [po] mode page: IDLE 1 [cha: y, def: 1, sav: 0] Idle timer active STANDBY 1 [cha: y, def: 1, sav: 0] Standby timer active ICT 1 [cha: n, def: 1, sav: 1] Idle condition timer (100 ms) SCT 4 [cha: n, def: 4, sav: 4] Standby condition timer (100 ms) And the --long output... which is also very long, but I did enjoy more english :) DL580 ~ # sdparm -av --long /dev/sdu >>> about to open device name: /dev/sdu /dev/sdu: SEAGATE ST373405FC MS09 Direct access device specific parameters: WP=0 DPOFUA=1 Read write error recovery [rw] [0x1] mode page [PS=1]: AWRE 1 [cha: y, def: 1, sav: 1] Automatic write reallocation enabled ARRE 1 [cha: y, def: 1, sav: 1] Automatic read reallocation enabled TB 0 [cha: y, def: 0, sav: 0] Transfer block RC 0 [cha: y, def: 0, sav: 0] Read continuous EER 0 [cha: y, def: 0, sav: 0] Enable early recovery PER 1 [cha: y, def: 0, sav: 1] Post error DTE 0 [cha: y, def: 0, sav: 0] Data terminate on error DCR 0 [cha: y, def: 0, sav: 0] Disable correction RRC 11 [cha: y, def: 11, sav: 11] Read retry count COR_S 240 [cha: n, def:240, sav:240] Correction span (obsolete) HOC 0 [cha: n, def: 0, sav: 0] Head offset count (obsolete) DSOC 0 [cha: n, def: 0, sav: 0] Data strobe offset count (obsolete) WRC 5 [cha: y, def: 5, sav: 5] Write retry count RTL -1 [cha: y, def: -1, sav: -1] Recovery time limit (ms) Disconnect-reconnect (SPC + transports) [dr] [0x2] mode page [PS=1]: BFR 128 [cha: y, def:128, sav:128] Buffer full ratio BER 128 [cha: y, def:128, sav:128] Buffer empty ratio BIL 0 [cha: n, def: 0, sav: 0] Bus inactivity limit DTL 0 [cha: n, def: 0, sav: 0] Disconnect time limit CTL 0 [cha: n, def: 0, sav: 0] Connect time limit MBS 369 [cha: y, def:369, sav:369] Maximum burst size (512 bytes) EMDP 0 [cha: n, def: 0, sav: 0] Enable modify data pointers FA 0 [cha: n, def: 0, sav: 0] Fair arbitration DIMM 0 [cha: n, def: 0, sav: 0] Disconnect immediate DTDC 0 [cha: n, def: 0, sav: 0] Data transfer disconnect control FBS 0 [cha: n, def: 0, sav: 0] First burst size (512 bytes) Format (SBC) [fo] [0x3] mode page [PS=1]: TPZ 15344 [cha: n, def:15344, sav:15344] Tracks per zone ASPZ 0 [cha: n, def: 0, sav: 0] Alternate sectors per zone ATPZ 23 [cha: n, def: 23, sav: 23] Alternate tracks per zone ATPLU 0 [cha: n, def: 0, sav: 0] Alternate tracks per logical unit SPT 607 [cha: n, def:607, sav:607] Sectors per track DBPPS 512 [cha: n, def:512, sav:512] Data bytes per physical sector INTLV 1 [cha: n, def: 1, sav: 1] Interleave TSF 96 [cha: n, def: 96, sav: 96] Track skew factor CSF 90 [cha: n, def: 90, sav: 90] Cylinder skew factor SSEC 0 [cha: n, def: 0, sav: 0] Soft sector HSEC 1 [cha: n, def: 1, sav: 1] Hard sector RMB 0 [cha: n, def: 0, sav: 0] Removable SURF 0 [cha: n, def: 0, sav: 0] Surface Rigid disk (SBC) [rd] [0x4] mode page [PS=1]: NOC 29550 [cha: n, def:29550, sav:29550] Number of cylinders NOH 8 [cha: n, def: 8, sav: 8] Number of heads SCWP 0 [cha: n, def: 0, sav: 0] Starting cylinder for write precompensation SCRWC 0 [cha: n, def: 0, sav: 0] Starting cylinder for reduced write current DSR 0 [cha: n, def: 0, sav: 0] Device step rate LZC 0 [cha: n, def: 0, sav: 0] Landing zone cylinder RPL 0 [cha: n, def: 0, sav: 0] Rotational position locking ROTO 0 [cha: n, def: 0, sav: 0] Rotational offset MRR 10040 [cha: n, def:10040, sav:10040] Medium rotation rate (rpm) Verify error recovery (SBC) [ve] [0x7] mode page [PS=1]: V_EER 0 [cha: y, def: 0, sav: 0] Enable early recovery V_PER 1 [cha: y, def: 0, sav: 1] Post error V_DTE 0 [cha: y, def: 0, sav: 0] Data terminate on error V_DCR 0 [cha: y, def: 0, sav: 0] Disable correction V_RC 11 [cha: y, def: 11, sav: 11] Verify retry count V_COR_S 240 [cha: n, def:240, sav:240] Verify correction span (obsolete) V_RTL -1 [cha: y, def: -1, sav: -1] Verify recovery time limit (ms) Caching (SBC) [ca] [0x8] mode page [PS=1]: IC 0 [cha: y, def: 0, sav: 0] Initiator control ABPF 0 [cha: n, def: 0, sav: 0] Abort pre-fetch CAP 0 [cha: y, def: 0, sav: 0] Caching analysis permitted DISC 1 [cha: y, def: 1, sav: 1] Discontinuity SIZE 0 [cha: n, def: 0, sav: 0] Size enable WCE 0 [cha: y, def: 1, sav: 0] Write cache enable MF 0 [cha: n, def: 0, sav: 0] Multiplication factor RCD 0 [cha: y, def: 0, sav: 0] Read cache disable DRRP 0 [cha: n, def: 0, sav: 0] Demand read retention priority WRP 0 [cha: n, def: 0, sav: 0] Write retention priority DPTL -1 [cha: n, def: -1, sav: -1] Disable pre-fetch transfer length MIPF 0 [cha: y, def: 0, sav: 0] Minimum pre-fetch MAPF -1 [cha: y, def: -1, sav: -1] Maximum pre-fetch MAPFC -1 [cha: n, def: -1, sav: -1] Maximum pre-fetch ceiling FSW 1 [cha: y, def: 1, sav: 1] Force sequential write LBCSS 0 [cha: n, def: 0, sav: 0] Logical block cache segment size DRA 0 [cha: y, def: 0, sav: 0] Disable read ahead NV_DIS 0 [cha: n, def: 0, sav: 0] Non-volatile cache disable NCS 16 [cha: y, def: 16, sav: 16] Number of cache segments CSS 0 [cha: n, def: 0, sav: 0] Cache segment size Control [co] [0xa] mode page [PS=1]: TST 0 [cha: n, def: 0, sav: 0] Task set type TMF_ONLY 0 [cha: n, def: 0, sav: 0] Task management functions only D_SENSE 0 [cha: n, def: 0, sav: 0] Descriptor format sense data GLTSD 0 [cha: y, def: 1, sav: 0] Global logging target save disable RLEC 1 [cha: y, def: 0, sav: 1] Report log exception condition QAM 0 [cha: y, def: 0, sav: 0] Queue algorithm modifier QERR 0 [cha: n, def: 0, sav: 0] Queue error management RAC 0 [cha: n, def: 0, sav: 0] Report a check UA_INTLCK 0 [cha: n, def: 0, sav: 0] Unit attention interlocks control SWP 0 [cha: y, def: 0, sav: 0] Software write protect ATO 0 [cha: n, def: 0, sav: 0] Application tag owner TAS 0 [cha: n, def: 0, sav: 0] Task aborted status AUTOLOAD 0 [cha: n, def: 0, sav: 0] Autoload mode BTP 0 [cha: n, def: 0, sav: 0] Busy timeout period (100us) ESTCT 0 [cha: y, def: 0, sav: 0] Extended self test completion time (sec) >> Control extension [coe] mode subpage [0xa,0x1] not found >> SAT pATA control [pat] mode subpage [0xa,0xf1] not found >> Power condition - old version [poo] mode page [0xd] not found >> XOR control (SBC) [xo] mode page [0x10] not found >> Protocol specific logical unit [pl] mode page [0x18] not found Protocol specific port [pp] [0x19] mode page [PS=1]: PPID 0 [cha: n, def: 0, sav: 0] Port's (transport) protocol identifier Power condition [po] [0x1a] mode page [PS=1]: IDLE 1 [cha: y, def: 1, sav: 0] Idle timer active STANDBY 1 [cha: y, def: 1, sav: 0] Standby timer active ICT 1 [cha: n, def: 1, sav: 1] Idle condition timer (100 ms) SCT 4 [cha: n, def: 4, sav: 4] Standby condition timer (100 ms) Informational exceptions control [ie] [0x1c] mode page [PS=1]: PERF 0 [cha: y, def: 0, sav: 0] Performance (impact of ie operations) EBF 0 [cha: n, def: 0, sav: 0] Enable background function EWASC 0 [cha: y, def: 1, sav: 0] Enable warning DEXCPT 0 [cha: y, def: 0, sav: 0] Disable exceptions TEST 0 [cha: y, def: 0, sav: 0] Test (simulate device failure) EBACKERR 0 [cha: n, def: 0, sav: 0] Enable background (scan + self test) error reporting LOGERR 0 [cha: y, def: 0, sav: 0] Log informational exception errors MRIE 3 [cha: y, def: 0, sav: 3] Method of reporting informational exceptions INTT 0 [cha: y, def: 0, sav: 0] Interval timer (100 ms) REPC 1 [cha: y, def: 1, sav: 1] Report count (or Test flag number [SSC-3]) >> Background control (SBC) [bc] mode subpage [0x1c,0x1] not found DL580 ~ # Edit : Thanks again - let me know if you find any more info on that other lead! I did find http://freshmeat.net/projects/sg3_utils/ and it deals with Scsi disks also possibly the same thing? Jonathan |
If you have sg_start, then you should have the rest of it; that IS one of the commands in `sg3_utils` of which I have version 1.25 which I built from source. It doesn't list a homepage, but I'll see what that is and edit this post.
Sasha |
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Hey
thanks for the info! I've need to do some digging to see how to get sdparm to set properly... I don't think the machine really liked me stopping the disk manually. this was just from "sd_start --stop /dev/sdt" After which I had to run the "redetect scsi" app. Any idea if how to set the sdparms? I've googled a bit and found one for a usb drive; but jsut to disable it. The code was sdparm --clear STANDBY -6 /dev/sda I've tried sdparm --set STANDBY -6 /dev/sdu and all sorts of combinations but just get strange errors. I was able to get a bit further, but still don't know what I'm setting or how to control it ... I tried.. DL580 ~ # sdparm -p po --set=IDLE=1 /dev/sdu /dev/sdu: SEAGATE ST373405FC MS09 DL580 ~ # sdparm -p po --set=ICT=1 /dev/sdu /dev/sdu: SEAGATE ST373405FC MS09 DL580 ~ # sdparm -p po --set=SCT=1 /dev/sdu /dev/sdu: SEAGATE ST373405FC MS09 DL580 ~ # sdparm -p po -l /dev/sdu /dev/sdu: SEAGATE ST373405FC MS09 Direct access device specific parameters: WP=0 DPOFUA=1 Power condition [po] mode page: IDLE 1 [cha: y, def: 1, sav: 0] Idle timer active STANDBY 1 [cha: y, def: 1, sav: 0] Standby timer active ICT 1 [cha: n, def: 1, sav: 1] Idle condition timer (100 ms) SCT 4 [cha: n, def: 4, sav: 4] Standby condition timer (100 ms) DL580 ~ # I can definately turn things on and off, I'm not sure if the sav: 0 field needs to be sav: 1 to be enabled? Cheers Jonathan * Output below after sd_start --stop /dev/sdt sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 0 Buffer I/O error on device sdt, logical block 0 Buffer I/O error on device sdt, logical block 1 Buffer I/O error on device sdt, logical block 2 Buffer I/O error on device sdt, logical block 3 Buffer I/O error on device sdt, logical block 4 Buffer I/O error on device sdt, logical block 5 Buffer I/O error on device sdt, logical block 6 Buffer I/O error on device sdt, logical block 7 Buffer I/O error on device sdt, logical block 8 Buffer I/O error on device sdt, logical block 9 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 0 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 2 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 0 printk: 10 messages suppressed. Buffer I/O error on device sdt, logical block 0 Buffer I/O error on device sdt, logical block 1 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 0 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 2 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 0 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 0 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 143374736 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 143374736 printk: 27 messages suppressed. Buffer I/O error on device sdt, logical block 71687368 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 0 sd 11:0:12:0: [sdt] Device not ready: Sense Key : 0x2 [current] sd 11:0:12:0: [sdt] Device not ready: ASC=0x4 ASCQ=0x2 end_request: I/O error, dev sdt, sector 0 qla2xxx 0000:02:01.1: LIP reset occured (f71e). qla2xxx 0000:02:01.1: LIP occured (f71e). qla2xxx 0000:02:01.1: LIP reset occured (f71e). qla2xxx 0000:02:01.1: LIP occured (f71e). rport-11:0-4: blocked FC remote port time out: removing target and saving binding qla2xxx 0000:02:01.1: LIP reset occured (f7f7). qla2xxx 0000:02:01.1: LIP occured (f7f7). qla2xxx 0000:02:01.1: LIP reset occured (f7f7). qla2xxx 0000:02:01.1: LIP occured (f7f7). |
If/when I put a hard drive to sleep, I believe I send it a sdparm -w to reset it (which awakes it)
But, most of the options with sdparm require a boolean input, ie a 1 or a 0, to enable/disable something or set something true/false. The man pages are pretty decent; the one for sg3_utils is exactly that: `man sg3_utils` and `man sdparm` is the other (also, `sdparm --help` is good) Cheers, :) Sasha |
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Thanks for that info, somehow I missed this, I must have jumped intoo fast, but if this works that will be exactly what I need! Thanks Jonathan |
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