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Add a comment about why the timeout for flush was lowered to 5s.

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This commit is contained in:
Warner Losh 2016-04-14 22:13:46 +00:00
parent ba6c22ce93
commit 86ddf15ebd
1 changed files with 5 additions and 0 deletions
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5
sys/cam/ata/ata_da.c
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@ -912,6 +912,11 @@ adadump(void *arg, void *virtual, vm_offset_t physical, off_t offset, size_t len
if (softc->flags & ADA_FLAG_CAN_FLUSHCACHE) {
xpt_setup_ccb(&ccb.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
/*
* Tell the drive to flush its intenral cache. if we
* can't flush in 5s we have big problems. No need to
* wait the default 60s to detect problems.
*/
ccb.ccb_h.ccb_state = ADA_CCB_DUMP;
cam_fill_ataio(&ccb.ataio,
0,