On Wed, 10 Mar 2021 09:55:04 -0500, VanguardLH wrote:
I use Samsung's Magician to change overprovisioning on my Samsung SSDs
(https://www.samsung.com/semiconducto...mer/magician/).
However, any partition manager will work where you use it to increase or
decrease the size of unallocated space on the SSD. Because the consumer
SSDs are typically shipped with 10%, or less, by default, you steal
space from an allocated partition, if there are any, to make
unallocated. I keep the unallocated space in one block.
Using linux here. If you reduce a partition size to leave some unallocated space,
how would the drive controller be informed? The fstrim command only works on
mounted partitions.
I have one spinning rust drive and three ssd drives. For the ssd drives ...
[root@x3 ~]# smartctl -a /dev/sdb|grep -i -e life -e wear -e model
Model Family: Indilinx Barefoot_2/Everest/Martini based SSDs
Device Model: OCZ-AGILITY4
232 Lifetime_Writes 0x0000 100 100 000 Old_age Offline - 79371192420
233 Media_Wearout_Indicator 0x0000 094 000 000 Old_age Offline - 94
[root@x3 ~]# smartctl -a /dev/sdc|grep -i -e life -e wear -e model
Model Family: Phison Driven SSDs
Device Model: KINGSTON SEDC400S37960G
231 SSD_Life_Left 0x0013 100 100 000 Pre-fail Always - 100
241 Lifetime_Writes_GiB 0x0012 100 100 000 Old_age Always - 605
242 Lifetime_Reads_GiB 0x0012 100 100 000 Old_age Always - 472
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
[root@x3 ~]# smartctl -a /dev/sdd|grep -i -e life -e wear -e model
Model Family: Intel 53x and Pro 1500/2500 Series SSDs
Device Model: INTEL SSDSC2BW240A4
226 Workld_Media_Wear_Indic 0x0032 100 100 000 Old_age Always - 65535
233 Media_Wearout_Indicator 0x0032 100 100 000 Old_age Always - 0
Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error
The OCZ-AGILITY4 at nearly 80 billion writes is getting close to it's limit.
I've been using it since early 2013.
Thanks for the heads up about losing read access too!
Regards, Dave Hodgins
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