| Title |
'Not Enough Memory' error when using chkfsys |
| Ref. No. |
QNX.000009442 |
| Category(ies) |
Utilities, Filesystem |
| Issue |
When attempting to run 'chkfsys' on our 35 gigabyte hard drive and 12 megs of RAM, we get a "Not Enough Memory" error. |
| Solution |
QNX uses a bitmap that tracks the state of each 512 byte block. Chkfsys loads this bitmap into memory, and then reads the entire drive, constructing another in-memory bitmap, and then compares the two. There must be enough free memory for both bitmaps.
On a 35Gig drive: 35 * 1024 * 1024 * 1024 == 37,580,963,840 bytes.
At 512 bytes per block: 73,400,320 blocks, which is a 73,400,320 bit bitmap. That is 9,175,040 bytes or 8,960 Kbytes, or 8.75 Meg. So, to chkfsys a 35Gig hdisk, you will need at least 17.5 Meg free. |
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