Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Hi Igor,
Igor Neves <igor at 3gnt.net> schrieb:
> Hi,
>
> Are you using hardware raid under drbd device or software raid?
>
> Cheers
>
it is software raid6 over 15 disks with one spare. The disks are in an SAS cage connected through
LSI Logic / Symbios Logic SAS1068 PCI-X Fusion-MPT SAS controller.
# hdparm -t /dev/md4
/dev/md4:
Timing buffered disk reads: 1102 MB in 3.01 seconds = 366.57 MB/sec
Timing buffered disk reads: 1040 MB in 3.00 seconds = 346.63 MB/sec
Timing buffered disk reads: 1042 MB in 3.01 seconds = 346.62 MB/sec
Timing buffered disk reads: 1070 MB in 3.00 seconds = 356.16 MB/sec
Timing buffered disk reads: 1078 MB in 3.00 seconds = 358.83 MB/sec
Timing buffered disk reads: 1120 MB in 3.00 seconds = 373.25 MB/sec
# cat /proc/mdstat
Personalities : [raid1] [raid0] [raid6] [raid5] [raid4]
md4 : active raid6 sdc[0] sdr[15](S) sdq[14] sdp[13] sdo[12] sdn[11] sdm[10] sdl[9] sdk[8] sdj[7] sdi[6] sdh[5] sdg[4] sdf[3] sde[2] sdd[1]
12697912448 blocks level 6, 64k chunk, algorithm 2 [15/15] [UUUUUUUUUUUUUUU]
Regards
Lars