Bug 172841

Summary: aacraid does not support TRIM in Raw (Pass Through) devices
Product: SCSI Drivers Reporter: Badalyan Vyacheslav (v.badalyan)
Component: DC395XAssignee: scsi_drivers-dc395x
Status: RESOLVED OBSOLETE    
Severity: normal CC: david.carroll
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 4.7.4-1.el7.elrepo.x86_64 Subsystem:
Regression: No Bisected commit-id:
Attachments: AACRAID get config 1

Description Badalyan Vyacheslav 2016-09-24 00:38:22 UTC
Created attachment 239601 [details]
AACRAID get config 1

Have SW raid 10. 8 x Intel SSD

Can't do fstrim.
mount -o discard does not add discard flag to mount point

[root@nas ~]# fstrim -v /mnt/SSD/
fstrim: /mnt/SSD/: the discard operation is not supported

[root@nas ~]# hdparm -I /dev/sdm | grep -i trim
           *    Data Set Management TRIM supported (limit 1 block)
           *    Deterministic read data after TRIM

[root@nas ~]# mount | grep SSD
/dev/md127 on /mnt/SSD type xfs (rw,relatime,attr2,inode64,sunit=1024,swidth=4096,noquota)

[root@nas ~]# cat /proc/mdstat
Personalities : [raid10]
md127 : active raid10 sdp1[0] sdr1[7] sdn1[6] sdm1[5] sdk1[4] sdl1[3] sdq1[2] sdo1[1]
      937195520 blocks super 1.2 512K chunks 2 near-copies [8/8] [UUUUUUUU]
      bitmap: 7/7 pages [28KB], 65536KB chunk

unused devices: <none>
Comment 1 Dave Carroll 2016-09-27 16:51:43 UTC
Hi Badalyan,

We are aware of the issue, and this is on our list of topics for a future release.

I'd like to put this is acknowledged.

Thanks, -Dave
Comment 2 Badalyan Vyacheslav 2016-10-28 22:50:18 UTC
Long. I sold and took a LSI